/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 10:41:05,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 10:41:05,408 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 [2023-08-26 10:41:05,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 10:41:05,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 10:41:05,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 10:41:05,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 10:41:05,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 10:41:05,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 10:41:05,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 10:41:05,449 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 10:41:05,449 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 10:41:05,449 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 10:41:05,450 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 10:41:05,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 10:41:05,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 10:41:05,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 10:41:05,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 10:41:05,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 10:41:05,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 10:41:05,452 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 10:41:05,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 10:41:05,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 10:41:05,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 10:41:05,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 10:41:05,454 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 10:41:05,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 10:41:05,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:41:05,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 10:41:05,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 10:41:05,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 10:41:05,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 10:41:05,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 10:41:05,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 10:41:05,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 10:41:05,457 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 10:41:05,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 10:41:05,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 10:41:05,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 10:41:05,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 10:41:05,826 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 10:41:05,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2023-08-26 10:41:06,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 10:41:07,094 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 10:41:07,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2023-08-26 10:41:07,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d73c5dda/29ac82f8be6a4c298e4b6c1e2a533e41/FLAG920680dd7 [2023-08-26 10:41:07,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d73c5dda/29ac82f8be6a4c298e4b6c1e2a533e41 [2023-08-26 10:41:07,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 10:41:07,113 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 10:41:07,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 10:41:07,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 10:41:07,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 10:41:07,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b66807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07, skipping insertion in model container [2023-08-26 10:41:07,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,137 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 10:41:07,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:41:07,288 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 10:41:07,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:41:07,319 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:41:07,320 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:41:07,325 INFO L206 MainTranslator]: Completed translation [2023-08-26 10:41:07,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07 WrapperNode [2023-08-26 10:41:07,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 10:41:07,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 10:41:07,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 10:41:07,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 10:41:07,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,388 INFO L138 Inliner]: procedures = 24, calls = 40, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 300 [2023-08-26 10:41:07,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 10:41:07,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 10:41:07,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 10:41:07,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 10:41:07,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 10:41:07,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 10:41:07,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 10:41:07,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 10:41:07,450 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (1/1) ... [2023-08-26 10:41:07,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:41:07,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:07,490 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) [2023-08-26 10:41:07,517 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 [2023-08-26 10:41:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 10:41:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 10:41:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 10:41:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 10:41:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 10:41:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 10:41:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 10:41:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 10:41:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 10:41:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 10:41:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 10:41:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 10:41:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 10:41:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 10:41:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 10:41:07,535 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 10:41:07,663 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 10:41:07,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 10:41:08,157 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 10:41:08,432 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 10:41:08,433 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 10:41:08,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:41:08 BoogieIcfgContainer [2023-08-26 10:41:08,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 10:41:08,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 10:41:08,438 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 10:41:08,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 10:41:08,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:41:07" (1/3) ... [2023-08-26 10:41:08,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb497ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:41:08, skipping insertion in model container [2023-08-26 10:41:08,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:07" (2/3) ... [2023-08-26 10:41:08,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb497ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:41:08, skipping insertion in model container [2023-08-26 10:41:08,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:41:08" (3/3) ... [2023-08-26 10:41:08,443 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2023-08-26 10:41:08,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 10:41:08,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-08-26 10:41:08,459 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 10:41:08,579 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 10:41:08,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 228 transitions, 472 flow [2023-08-26 10:41:08,708 INFO L124 PetriNetUnfolderBase]: 11/226 cut-off events. [2023-08-26 10:41:08,708 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 10:41:08,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 226 events. 11/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 308 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 156. Up to 3 conditions per place. [2023-08-26 10:41:08,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 228 transitions, 472 flow [2023-08-26 10:41:08,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 217 transitions, 446 flow [2023-08-26 10:41:08,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 10:41:08,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 217 transitions, 446 flow [2023-08-26 10:41:08,735 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 217 transitions, 446 flow [2023-08-26 10:41:08,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 217 transitions, 446 flow [2023-08-26 10:41:08,797 INFO L124 PetriNetUnfolderBase]: 11/217 cut-off events. [2023-08-26 10:41:08,797 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 10:41:08,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 217 events. 11/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 299 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 156. Up to 3 conditions per place. [2023-08-26 10:41:08,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 3674 [2023-08-26 10:41:16,302 INFO L134 LiptonReduction]: Checked pairs total: 10230 [2023-08-26 10:41:16,303 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-26 10:41:16,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 10:41:16,328 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;@51206f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 10:41:16,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2023-08-26 10:41:16,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 10:41:16,330 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 10:41:16,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:41:16,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:16,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 10:41:16,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:16,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2023-08-26 10:41:16,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:16,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329082773] [2023-08-26 10:41:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:16,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329082773] [2023-08-26 10:41:16,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329082773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:16,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:16,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 10:41:16,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239974316] [2023-08-26 10:41:16,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:16,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 10:41:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:16,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 10:41:16,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 10:41:16,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-08-26 10:41:16,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 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) [2023-08-26 10:41:16,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:16,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-08-26 10:41:16,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:16,551 INFO L124 PetriNetUnfolderBase]: 45/124 cut-off events. [2023-08-26 10:41:16,552 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-26 10:41:16,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 124 events. 45/124 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 356 event pairs, 18 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 150. Up to 76 conditions per place. [2023-08-26 10:41:16,555 INFO L140 encePairwiseOnDemand]: 438/478 looper letters, 15 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-08-26 10:41:16,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 96 flow [2023-08-26 10:41:16,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 10:41:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 10:41:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2023-08-26 10:41:16,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446652719665272 [2023-08-26 10:41:16,574 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2023-08-26 10:41:16,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2023-08-26 10:41:16,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:16,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2023-08-26 10:41:16,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 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) [2023-08-26 10:41:16,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 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) [2023-08-26 10:41:16,591 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 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) [2023-08-26 10:41:16,592 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 146 flow. Second operand 2 states and 427 transitions. [2023-08-26 10:41:16,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 96 flow [2023-08-26 10:41:16,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:41:16,597 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 58 flow [2023-08-26 10:41:16,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-26 10:41:16,601 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -43 predicate places. [2023-08-26 10:41:16,601 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 58 flow [2023-08-26 10:41:16,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 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) [2023-08-26 10:41:16,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:16,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:41:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 10:41:16,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:16,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash -103323018, now seen corresponding path program 1 times [2023-08-26 10:41:16,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:16,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998593184] [2023-08-26 10:41:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:16,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:17,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:17,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998593184] [2023-08-26 10:41:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998593184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:17,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:17,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:41:17,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267358676] [2023-08-26 10:41:17,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:17,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:41:17,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:17,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:41:17,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:41:17,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 478 [2023-08-26 10:41:17,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 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) [2023-08-26 10:41:17,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:17,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 478 [2023-08-26 10:41:17,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:17,366 INFO L124 PetriNetUnfolderBase]: 161/246 cut-off events. [2023-08-26 10:41:17,366 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:41:17,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 246 events. 161/246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 670 event pairs, 5 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 492. Up to 117 conditions per place. [2023-08-26 10:41:17,368 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 36 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-08-26 10:41:17,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 168 flow [2023-08-26 10:41:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1013 transitions. [2023-08-26 10:41:17,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353207810320781 [2023-08-26 10:41:17,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1013 transitions. [2023-08-26 10:41:17,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1013 transitions. [2023-08-26 10:41:17,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:17,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1013 transitions. [2023-08-26 10:41:17,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.83333333333334) internal successors, (1013), 6 states have internal predecessors, (1013), 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) [2023-08-26 10:41:17,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:41:17,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:41:17,389 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 58 flow. Second operand 6 states and 1013 transitions. [2023-08-26 10:41:17,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 168 flow [2023-08-26 10:41:17,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:41:17,392 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 64 flow [2023-08-26 10:41:17,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-26 10:41:17,393 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -39 predicate places. [2023-08-26 10:41:17,393 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 64 flow [2023-08-26 10:41:17,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 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) [2023-08-26 10:41:17,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:17,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:41:17,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 10:41:17,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:17,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2122879380, now seen corresponding path program 1 times [2023-08-26 10:41:17,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:17,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371873758] [2023-08-26 10:41:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:17,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:17,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371873758] [2023-08-26 10:41:17,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371873758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:17,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:17,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:41:17,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508419195] [2023-08-26 10:41:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:17,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:41:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:41:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:41:17,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 478 [2023-08-26 10:41:17,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 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) [2023-08-26 10:41:17,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:17,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 478 [2023-08-26 10:41:17,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:17,610 INFO L124 PetriNetUnfolderBase]: 45/130 cut-off events. [2023-08-26 10:41:17,610 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 10:41:17,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 130 events. 45/130 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 376 event pairs, 18 based on Foata normal form. 6/104 useless extension candidates. Maximal degree in co-relation 245. Up to 76 conditions per place. [2023-08-26 10:41:17,612 INFO L140 encePairwiseOnDemand]: 471/478 looper letters, 14 selfloop transitions, 2 changer transitions 5/32 dead transitions. [2023-08-26 10:41:17,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 122 flow [2023-08-26 10:41:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:41:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:41:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 685 transitions. [2023-08-26 10:41:17,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35826359832635984 [2023-08-26 10:41:17,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 685 transitions. [2023-08-26 10:41:17,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 685 transitions. [2023-08-26 10:41:17,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:17,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 685 transitions. [2023-08-26 10:41:17,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 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) [2023-08-26 10:41:17,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 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) [2023-08-26 10:41:17,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 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) [2023-08-26 10:41:17,621 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 64 flow. Second operand 4 states and 685 transitions. [2023-08-26 10:41:17,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 122 flow [2023-08-26 10:41:17,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:41:17,622 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 77 flow [2023-08-26 10:41:17,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-26 10:41:17,623 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -38 predicate places. [2023-08-26 10:41:17,623 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 77 flow [2023-08-26 10:41:17,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 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) [2023-08-26 10:41:17,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:17,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:41:17,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 10:41:17,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:17,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash -619347183, now seen corresponding path program 1 times [2023-08-26 10:41:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:17,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965959692] [2023-08-26 10:41:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:17,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:41:17,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965959692] [2023-08-26 10:41:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965959692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:17,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:17,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:41:17,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906545399] [2023-08-26 10:41:17,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:17,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:41:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:41:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:41:17,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 478 [2023-08-26 10:41:17,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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) [2023-08-26 10:41:17,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:17,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 478 [2023-08-26 10:41:17,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:18,119 INFO L124 PetriNetUnfolderBase]: 157/240 cut-off events. [2023-08-26 10:41:18,119 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-26 10:41:18,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 240 events. 157/240 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 666 event pairs, 64 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 658. Up to 200 conditions per place. [2023-08-26 10:41:18,121 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 28 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-08-26 10:41:18,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 171 flow [2023-08-26 10:41:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1004 transitions. [2023-08-26 10:41:18,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3500697350069735 [2023-08-26 10:41:18,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1004 transitions. [2023-08-26 10:41:18,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1004 transitions. [2023-08-26 10:41:18,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:18,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1004 transitions. [2023-08-26 10:41:18,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.33333333333334) internal successors, (1004), 6 states have internal predecessors, (1004), 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) [2023-08-26 10:41:18,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:41:18,134 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:41:18,134 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 77 flow. Second operand 6 states and 1004 transitions. [2023-08-26 10:41:18,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 171 flow [2023-08-26 10:41:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 167 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 10:41:18,136 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 79 flow [2023-08-26 10:41:18,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-26 10:41:18,137 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -36 predicate places. [2023-08-26 10:41:18,137 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 79 flow [2023-08-26 10:41:18,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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) [2023-08-26 10:41:18,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:18,138 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] [2023-08-26 10:41:18,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 10:41:18,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:18,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2041682223, now seen corresponding path program 1 times [2023-08-26 10:41:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:18,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563024557] [2023-08-26 10:41:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:41:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:18,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563024557] [2023-08-26 10:41:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563024557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:18,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:18,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:41:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326912637] [2023-08-26 10:41:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:18,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 10:41:18,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 10:41:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 10:41:18,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 478 [2023-08-26 10:41:18,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 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) [2023-08-26 10:41:18,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:18,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 478 [2023-08-26 10:41:18,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:18,582 INFO L124 PetriNetUnfolderBase]: 72/184 cut-off events. [2023-08-26 10:41:18,582 INFO L125 PetriNetUnfolderBase]: For 28/47 co-relation queries the response was YES. [2023-08-26 10:41:18,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 184 events. 72/184 cut-off events. For 28/47 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 645 event pairs, 11 based on Foata normal form. 3/146 useless extension candidates. Maximal degree in co-relation 433. Up to 77 conditions per place. [2023-08-26 10:41:18,584 INFO L140 encePairwiseOnDemand]: 471/478 looper letters, 32 selfloop transitions, 8 changer transitions 2/51 dead transitions. [2023-08-26 10:41:18,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 243 flow [2023-08-26 10:41:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1086 transitions. [2023-08-26 10:41:18,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786610878661088 [2023-08-26 10:41:18,587 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1086 transitions. [2023-08-26 10:41:18,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1086 transitions. [2023-08-26 10:41:18,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:18,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1086 transitions. [2023-08-26 10:41:18,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 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) [2023-08-26 10:41:18,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:41:18,594 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:41:18,594 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 79 flow. Second operand 6 states and 1086 transitions. [2023-08-26 10:41:18,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 243 flow [2023-08-26 10:41:18,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:41:18,596 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 130 flow [2023-08-26 10:41:18,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-26 10:41:18,597 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -32 predicate places. [2023-08-26 10:41:18,597 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 130 flow [2023-08-26 10:41:18,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 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) [2023-08-26 10:41:18,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:18,598 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] [2023-08-26 10:41:18,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 10:41:18,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:18,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 726030150, now seen corresponding path program 1 times [2023-08-26 10:41:18,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:18,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994393733] [2023-08-26 10:41:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:18,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:18,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:18,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994393733] [2023-08-26 10:41:18,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994393733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:18,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118364791] [2023-08-26 10:41:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:18,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:18,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:18,739 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) [2023-08-26 10:41:18,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 10:41:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:18,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 10:41:18,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:41:18,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:41:18,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118364791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:18,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:41:18,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-08-26 10:41:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301421189] [2023-08-26 10:41:18,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:18,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:41:18,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:18,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:41:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-26 10:41:18,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 478 [2023-08-26 10:41:18,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 185.5) internal successors, (742), 4 states have internal predecessors, (742), 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) [2023-08-26 10:41:18,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:18,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 478 [2023-08-26 10:41:18,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:19,043 INFO L124 PetriNetUnfolderBase]: 87/233 cut-off events. [2023-08-26 10:41:19,043 INFO L125 PetriNetUnfolderBase]: For 138/165 co-relation queries the response was YES. [2023-08-26 10:41:19,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 233 events. 87/233 cut-off events. For 138/165 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 912 event pairs, 12 based on Foata normal form. 25/231 useless extension candidates. Maximal degree in co-relation 655. Up to 109 conditions per place. [2023-08-26 10:41:19,045 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 30 selfloop transitions, 9 changer transitions 2/51 dead transitions. [2023-08-26 10:41:19,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 280 flow [2023-08-26 10:41:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:41:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:41:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 765 transitions. [2023-08-26 10:41:19,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40010460251046026 [2023-08-26 10:41:19,047 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 765 transitions. [2023-08-26 10:41:19,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 765 transitions. [2023-08-26 10:41:19,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:19,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 765 transitions. [2023-08-26 10:41:19,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 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) [2023-08-26 10:41:19,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 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) [2023-08-26 10:41:19,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 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) [2023-08-26 10:41:19,052 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 130 flow. Second operand 4 states and 765 transitions. [2023-08-26 10:41:19,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 280 flow [2023-08-26 10:41:19,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 267 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 10:41:19,054 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 183 flow [2023-08-26 10:41:19,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-26 10:41:19,055 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -29 predicate places. [2023-08-26 10:41:19,055 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 183 flow [2023-08-26 10:41:19,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.5) internal successors, (742), 4 states have internal predecessors, (742), 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) [2023-08-26 10:41:19,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:19,056 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] [2023-08-26 10:41:19,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:19,264 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 [2023-08-26 10:41:19,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:19,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash -693880220, now seen corresponding path program 1 times [2023-08-26 10:41:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:19,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760662758] [2023-08-26 10:41:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:19,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:19,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760662758] [2023-08-26 10:41:19,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760662758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:19,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805728560] [2023-08-26 10:41:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:19,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:19,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:19,426 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) [2023-08-26 10:41:19,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 10:41:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:19,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:41:19,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:19,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:19,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805728560] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:19,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:19,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-26 10:41:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359787156] [2023-08-26 10:41:19,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:19,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 10:41:19,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 10:41:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-08-26 10:41:19,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 478 [2023-08-26 10:41:19,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 183 flow. Second operand has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2023-08-26 10:41:19,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:19,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 478 [2023-08-26 10:41:19,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:19,827 INFO L124 PetriNetUnfolderBase]: 82/246 cut-off events. [2023-08-26 10:41:19,827 INFO L125 PetriNetUnfolderBase]: For 317/337 co-relation queries the response was YES. [2023-08-26 10:41:19,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 246 events. 82/246 cut-off events. For 317/337 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 990 event pairs, 36 based on Foata normal form. 14/226 useless extension candidates. Maximal degree in co-relation 828. Up to 158 conditions per place. [2023-08-26 10:41:19,829 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 23 selfloop transitions, 3 changer transitions 11/47 dead transitions. [2023-08-26 10:41:19,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 308 flow [2023-08-26 10:41:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1008 transitions. [2023-08-26 10:41:19,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3514644351464435 [2023-08-26 10:41:19,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1008 transitions. [2023-08-26 10:41:19,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1008 transitions. [2023-08-26 10:41:19,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:19,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1008 transitions. [2023-08-26 10:41:19,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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) [2023-08-26 10:41:19,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:41:19,839 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:41:19,839 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 183 flow. Second operand 6 states and 1008 transitions. [2023-08-26 10:41:19,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 308 flow [2023-08-26 10:41:19,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 280 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-26 10:41:19,842 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 185 flow [2023-08-26 10:41:19,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-26 10:41:19,843 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -23 predicate places. [2023-08-26 10:41:19,843 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 185 flow [2023-08-26 10:41:19,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2023-08-26 10:41:19,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:19,844 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] [2023-08-26 10:41:19,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:20,050 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,SelfDestructingSolverStorable6 [2023-08-26 10:41:20,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:20,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 595697297, now seen corresponding path program 2 times [2023-08-26 10:41:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438487653] [2023-08-26 10:41:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:21,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:21,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438487653] [2023-08-26 10:41:21,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438487653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:21,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367434548] [2023-08-26 10:41:21,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:41:21,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:21,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:21,179 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) [2023-08-26 10:41:21,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 10:41:21,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:41:21,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:41:21,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 10:41:21,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:21,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:41:21,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-26 10:41:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:21,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:21,960 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:21,961 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-08-26 10:41:21,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-26 10:41:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367434548] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:22,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:22,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-08-26 10:41:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397127188] [2023-08-26 10:41:22,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 10:41:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:22,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 10:41:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2023-08-26 10:41:22,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-26 10:41:22,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 185 flow. Second operand has 24 states, 24 states have (on average 122.41666666666667) internal successors, (2938), 24 states have internal predecessors, (2938), 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) [2023-08-26 10:41:22,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:22,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-26 10:41:22,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:23,880 INFO L124 PetriNetUnfolderBase]: 729/1355 cut-off events. [2023-08-26 10:41:23,881 INFO L125 PetriNetUnfolderBase]: For 1896/1902 co-relation queries the response was YES. [2023-08-26 10:41:23,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 1355 events. 729/1355 cut-off events. For 1896/1902 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6829 event pairs, 90 based on Foata normal form. 60/1199 useless extension candidates. Maximal degree in co-relation 5141. Up to 505 conditions per place. [2023-08-26 10:41:23,889 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 154 selfloop transitions, 41 changer transitions 1/197 dead transitions. [2023-08-26 10:41:23,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 197 transitions, 1228 flow [2023-08-26 10:41:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 10:41:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 10:41:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2206 transitions. [2023-08-26 10:41:23,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27147428008860447 [2023-08-26 10:41:23,898 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2206 transitions. [2023-08-26 10:41:23,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2206 transitions. [2023-08-26 10:41:23,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:23,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2206 transitions. [2023-08-26 10:41:23,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 129.76470588235293) internal successors, (2206), 17 states have internal predecessors, (2206), 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) [2023-08-26 10:41:23,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 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) [2023-08-26 10:41:23,916 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 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) [2023-08-26 10:41:23,917 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 185 flow. Second operand 17 states and 2206 transitions. [2023-08-26 10:41:23,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 197 transitions, 1228 flow [2023-08-26 10:41:23,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 197 transitions, 1178 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-26 10:41:23,924 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 624 flow [2023-08-26 10:41:23,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=624, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-08-26 10:41:23,927 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-08-26 10:41:23,927 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 624 flow [2023-08-26 10:41:23,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 122.41666666666667) internal successors, (2938), 24 states have internal predecessors, (2938), 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) [2023-08-26 10:41:23,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:23,928 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] [2023-08-26 10:41:23,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:24,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:24,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:24,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2072052575, now seen corresponding path program 3 times [2023-08-26 10:41:24,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:24,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746632457] [2023-08-26 10:41:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:24,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:24,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:24,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746632457] [2023-08-26 10:41:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746632457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:24,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758243986] [2023-08-26 10:41:24,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:41:24,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:24,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:24,608 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) [2023-08-26 10:41:24,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 10:41:24,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:41:24,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:41:24,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 10:41:24,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:25,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:25,150 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:41:25,150 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-08-26 10:41:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758243986] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:25,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:25,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 19 [2023-08-26 10:41:25,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890243735] [2023-08-26 10:41:25,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:25,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 10:41:25,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:25,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 10:41:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-26 10:41:25,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-26 10:41:25,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 624 flow. Second operand has 20 states, 20 states have (on average 152.85) internal successors, (3057), 20 states have internal predecessors, (3057), 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) [2023-08-26 10:41:25,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:25,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-26 10:41:25,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:25,885 INFO L124 PetriNetUnfolderBase]: 324/911 cut-off events. [2023-08-26 10:41:25,885 INFO L125 PetriNetUnfolderBase]: For 2418/2503 co-relation queries the response was YES. [2023-08-26 10:41:25,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 911 events. 324/911 cut-off events. For 2418/2503 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5856 event pairs, 37 based on Foata normal form. 68/916 useless extension candidates. Maximal degree in co-relation 3640. Up to 406 conditions per place. [2023-08-26 10:41:25,892 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 113 selfloop transitions, 36 changer transitions 4/164 dead transitions. [2023-08-26 10:41:25,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 164 transitions, 1503 flow [2023-08-26 10:41:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 10:41:25,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 10:41:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2362 transitions. [2023-08-26 10:41:25,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3294281729428173 [2023-08-26 10:41:25,899 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2362 transitions. [2023-08-26 10:41:25,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2362 transitions. [2023-08-26 10:41:25,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:25,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2362 transitions. [2023-08-26 10:41:25,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 157.46666666666667) internal successors, (2362), 15 states have internal predecessors, (2362), 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) [2023-08-26 10:41:25,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 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) [2023-08-26 10:41:25,926 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 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) [2023-08-26 10:41:25,926 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 624 flow. Second operand 15 states and 2362 transitions. [2023-08-26 10:41:25,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 164 transitions, 1503 flow [2023-08-26 10:41:25,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 164 transitions, 1389 flow, removed 53 selfloop flow, removed 4 redundant places. [2023-08-26 10:41:25,940 INFO L231 Difference]: Finished difference. Result has 82 places, 102 transitions, 992 flow [2023-08-26 10:41:25,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=992, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2023-08-26 10:41:25,942 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 11 predicate places. [2023-08-26 10:41:25,942 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 992 flow [2023-08-26 10:41:25,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 152.85) internal successors, (3057), 20 states have internal predecessors, (3057), 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) [2023-08-26 10:41:25,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:25,943 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] [2023-08-26 10:41:25,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:26,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:26,151 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:26,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:26,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1599878107, now seen corresponding path program 4 times [2023-08-26 10:41:26,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90308584] [2023-08-26 10:41:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:26,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:26,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90308584] [2023-08-26 10:41:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90308584] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:26,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257351695] [2023-08-26 10:41:26,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:41:26,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:26,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:26,609 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) [2023-08-26 10:41:26,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 10:41:27,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:41:27,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:41:27,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-26 10:41:27,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:27,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:41:27,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-26 10:41:27,297 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:41:27,300 INFO L322 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2023-08-26 10:41:27,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 1 [2023-08-26 10:41:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:27,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:27,418 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:27,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-08-26 10:41:27,423 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-26 10:41:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:27,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257351695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:27,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:27,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 20 [2023-08-26 10:41:27,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453881213] [2023-08-26 10:41:27,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 10:41:27,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 10:41:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-08-26 10:41:27,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 478 [2023-08-26 10:41:27,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 992 flow. Second operand has 21 states, 21 states have (on average 142.95238095238096) internal successors, (3002), 21 states have internal predecessors, (3002), 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) [2023-08-26 10:41:27,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:27,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 478 [2023-08-26 10:41:27,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:29,000 INFO L124 PetriNetUnfolderBase]: 336/817 cut-off events. [2023-08-26 10:41:29,000 INFO L125 PetriNetUnfolderBase]: For 5158/5213 co-relation queries the response was YES. [2023-08-26 10:41:29,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 817 events. 336/817 cut-off events. For 5158/5213 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4742 event pairs, 70 based on Foata normal form. 63/849 useless extension candidates. Maximal degree in co-relation 4097. Up to 411 conditions per place. [2023-08-26 10:41:29,007 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 87 selfloop transitions, 38 changer transitions 11/143 dead transitions. [2023-08-26 10:41:29,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 1351 flow [2023-08-26 10:41:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 10:41:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 10:41:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3072 transitions. [2023-08-26 10:41:29,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30603705917513446 [2023-08-26 10:41:29,016 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3072 transitions. [2023-08-26 10:41:29,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3072 transitions. [2023-08-26 10:41:29,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:29,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3072 transitions. [2023-08-26 10:41:29,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 146.28571428571428) internal successors, (3072), 21 states have internal predecessors, (3072), 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) [2023-08-26 10:41:29,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 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) [2023-08-26 10:41:29,035 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 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) [2023-08-26 10:41:29,035 INFO L175 Difference]: Start difference. First operand has 82 places, 102 transitions, 992 flow. Second operand 21 states and 3072 transitions. [2023-08-26 10:41:29,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 1351 flow [2023-08-26 10:41:29,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 1257 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-26 10:41:29,056 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 857 flow [2023-08-26 10:41:29,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=857, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2023-08-26 10:41:29,057 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 31 predicate places. [2023-08-26 10:41:29,057 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 857 flow [2023-08-26 10:41:29,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 142.95238095238096) internal successors, (3002), 21 states have internal predecessors, (3002), 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) [2023-08-26 10:41:29,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:29,058 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:41:29,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:29,265 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,SelfDestructingSolverStorable9 [2023-08-26 10:41:29,266 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:29,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1562637728, now seen corresponding path program 5 times [2023-08-26 10:41:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:29,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267980607] [2023-08-26 10:41:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267980607] [2023-08-26 10:41:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267980607] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829813311] [2023-08-26 10:41:30,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:41:30,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:30,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:30,133 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) [2023-08-26 10:41:30,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 10:41:30,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:41:30,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:41:30,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-26 10:41:30,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:41:30,461 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-26 10:41:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:41:30,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:30,540 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:30,540 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-08-26 10:41:30,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-26 10:41:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:41:30,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829813311] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:30,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:30,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 17 [2023-08-26 10:41:30,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666890478] [2023-08-26 10:41:30,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:30,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 10:41:30,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 10:41:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2023-08-26 10:41:30,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 478 [2023-08-26 10:41:30,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 857 flow. Second operand has 18 states, 18 states have (on average 143.11111111111111) internal successors, (2576), 18 states have internal predecessors, (2576), 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) [2023-08-26 10:41:30,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:30,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 478 [2023-08-26 10:41:30,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:31,258 INFO L124 PetriNetUnfolderBase]: 345/769 cut-off events. [2023-08-26 10:41:31,258 INFO L125 PetriNetUnfolderBase]: For 5580/5604 co-relation queries the response was YES. [2023-08-26 10:41:31,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 769 events. 345/769 cut-off events. For 5580/5604 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4004 event pairs, 44 based on Foata normal form. 52/798 useless extension candidates. Maximal degree in co-relation 4136. Up to 399 conditions per place. [2023-08-26 10:41:31,266 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 86 selfloop transitions, 36 changer transitions 0/129 dead transitions. [2023-08-26 10:41:31,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 1443 flow [2023-08-26 10:41:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:41:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:41:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1468 transitions. [2023-08-26 10:41:31,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30711297071129706 [2023-08-26 10:41:31,272 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1468 transitions. [2023-08-26 10:41:31,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1468 transitions. [2023-08-26 10:41:31,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:31,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1468 transitions. [2023-08-26 10:41:31,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.8) internal successors, (1468), 10 states have internal predecessors, (1468), 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) [2023-08-26 10:41:31,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 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) [2023-08-26 10:41:31,282 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 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) [2023-08-26 10:41:31,282 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 857 flow. Second operand 10 states and 1468 transitions. [2023-08-26 10:41:31,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 1443 flow [2023-08-26 10:41:31,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 1307 flow, removed 41 selfloop flow, removed 14 redundant places. [2023-08-26 10:41:31,311 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 917 flow [2023-08-26 10:41:31,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=917, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2023-08-26 10:41:31,312 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2023-08-26 10:41:31,312 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 917 flow [2023-08-26 10:41:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 143.11111111111111) internal successors, (2576), 18 states have internal predecessors, (2576), 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) [2023-08-26 10:41:31,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:31,313 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] [2023-08-26 10:41:31,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:31,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:31,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:31,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1938593160, now seen corresponding path program 1 times [2023-08-26 10:41:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:31,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507066439] [2023-08-26 10:41:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:32,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:32,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507066439] [2023-08-26 10:41:32,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507066439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:32,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455154761] [2023-08-26 10:41:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:32,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:32,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:32,154 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) [2023-08-26 10:41:32,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 10:41:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:32,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-26 10:41:32,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:32,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 10:41:32,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:41:32,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:41:32,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:41:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:32,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:33,398 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:33,398 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 63 [2023-08-26 10:41:33,408 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:33,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 140 [2023-08-26 10:41:33,419 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:33,420 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 116 [2023-08-26 10:41:33,434 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:33,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 79 [2023-08-26 10:41:33,651 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:33,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 63 [2023-08-26 10:41:33,661 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 10:41:33,661 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 136 [2023-08-26 10:41:33,676 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 10:41:33,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 112 [2023-08-26 10:41:33,690 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 10:41:33,691 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 75 [2023-08-26 10:41:33,755 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-26 10:41:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:33,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455154761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:33,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:33,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-08-26 10:41:33,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500901132] [2023-08-26 10:41:33,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:33,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 10:41:33,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 10:41:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=639, Unknown=7, NotChecked=0, Total=756 [2023-08-26 10:41:33,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-26 10:41:33,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 917 flow. Second operand has 28 states, 28 states have (on average 122.60714285714286) internal successors, (3433), 28 states have internal predecessors, (3433), 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) [2023-08-26 10:41:33,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:33,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-26 10:41:33,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:43,352 WARN L234 SmtUtils]: Spent 8.59s on a formula simplification. DAG size of input: 87 DAG size of output: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:41:47,573 INFO L124 PetriNetUnfolderBase]: 894/1631 cut-off events. [2023-08-26 10:41:47,573 INFO L125 PetriNetUnfolderBase]: For 13441/13441 co-relation queries the response was YES. [2023-08-26 10:41:47,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9335 conditions, 1631 events. 894/1631 cut-off events. For 13441/13441 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8416 event pairs, 228 based on Foata normal form. 2/1579 useless extension candidates. Maximal degree in co-relation 9309. Up to 1184 conditions per place. [2023-08-26 10:41:47,588 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 201 selfloop transitions, 47 changer transitions 15/264 dead transitions. [2023-08-26 10:41:47,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 264 transitions, 2166 flow [2023-08-26 10:41:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-26 10:41:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-26 10:41:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3579 transitions. [2023-08-26 10:41:47,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2674088463837418 [2023-08-26 10:41:47,597 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3579 transitions. [2023-08-26 10:41:47,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3579 transitions. [2023-08-26 10:41:47,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:47,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3579 transitions. [2023-08-26 10:41:47,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 127.82142857142857) internal successors, (3579), 28 states have internal predecessors, (3579), 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) [2023-08-26 10:41:47,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 478.0) internal successors, (13862), 29 states have internal predecessors, (13862), 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) [2023-08-26 10:41:47,620 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 478.0) internal successors, (13862), 29 states have internal predecessors, (13862), 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) [2023-08-26 10:41:47,620 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 917 flow. Second operand 28 states and 3579 transitions. [2023-08-26 10:41:47,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 264 transitions, 2166 flow [2023-08-26 10:41:47,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 264 transitions, 2065 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-26 10:41:47,642 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 1278 flow [2023-08-26 10:41:47,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1278, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-08-26 10:41:47,643 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 45 predicate places. [2023-08-26 10:41:47,643 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 1278 flow [2023-08-26 10:41:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 122.60714285714286) internal successors, (3433), 28 states have internal predecessors, (3433), 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) [2023-08-26 10:41:47,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:47,644 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] [2023-08-26 10:41:47,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:47,850 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:47,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1621675982, now seen corresponding path program 2 times [2023-08-26 10:41:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105635415] [2023-08-26 10:41:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:48,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105635415] [2023-08-26 10:41:48,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105635415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488095262] [2023-08-26 10:41:48,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:41:48,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:48,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:48,473 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) [2023-08-26 10:41:48,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 10:41:49,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:41:49,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:41:49,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-26 10:41:49,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:49,296 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-08-26 10:41:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:49,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:49,590 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:49,591 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2023-08-26 10:41:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:49,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488095262] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:49,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:49,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-08-26 10:41:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430731549] [2023-08-26 10:41:49,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:49,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 10:41:49,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 10:41:49,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2023-08-26 10:41:49,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-26 10:41:49,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 1278 flow. Second operand has 28 states, 28 states have (on average 140.67857142857142) internal successors, (3939), 28 states have internal predecessors, (3939), 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) [2023-08-26 10:41:49,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:49,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-26 10:41:49,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:51,303 INFO L124 PetriNetUnfolderBase]: 323/888 cut-off events. [2023-08-26 10:41:51,303 INFO L125 PetriNetUnfolderBase]: For 4491/4563 co-relation queries the response was YES. [2023-08-26 10:41:51,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4190 conditions, 888 events. 323/888 cut-off events. For 4491/4563 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5673 event pairs, 35 based on Foata normal form. 19/878 useless extension candidates. Maximal degree in co-relation 4160. Up to 413 conditions per place. [2023-08-26 10:41:51,311 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 100 selfloop transitions, 48 changer transitions 21/178 dead transitions. [2023-08-26 10:41:51,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 178 transitions, 1918 flow [2023-08-26 10:41:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 10:41:51,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 10:41:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3014 transitions. [2023-08-26 10:41:51,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30025901574018726 [2023-08-26 10:41:51,316 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3014 transitions. [2023-08-26 10:41:51,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3014 transitions. [2023-08-26 10:41:51,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:51,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3014 transitions. [2023-08-26 10:41:51,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 143.52380952380952) internal successors, (3014), 21 states have internal predecessors, (3014), 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) [2023-08-26 10:41:51,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 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) [2023-08-26 10:41:51,328 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 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) [2023-08-26 10:41:51,328 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 1278 flow. Second operand 21 states and 3014 transitions. [2023-08-26 10:41:51,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 178 transitions, 1918 flow [2023-08-26 10:41:51,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 1800 flow, removed 40 selfloop flow, removed 13 redundant places. [2023-08-26 10:41:51,345 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1391 flow [2023-08-26 10:41:51,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1391, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2023-08-26 10:41:51,346 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 56 predicate places. [2023-08-26 10:41:51,346 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1391 flow [2023-08-26 10:41:51,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 140.67857142857142) internal successors, (3939), 28 states have internal predecessors, (3939), 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) [2023-08-26 10:41:51,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:51,347 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] [2023-08-26 10:41:51,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:51,553 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,SelfDestructingSolverStorable12 [2023-08-26 10:41:51,553 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:51,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1746687140, now seen corresponding path program 3 times [2023-08-26 10:41:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:51,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061030634] [2023-08-26 10:41:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:51,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:52,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061030634] [2023-08-26 10:41:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061030634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034680889] [2023-08-26 10:41:52,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:41:52,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:52,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:52,569 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) [2023-08-26 10:41:52,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 10:41:53,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:41:53,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:41:53,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 10:41:53,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:53,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:41:53,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-26 10:41:53,427 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:41:53,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-26 10:41:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:53,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:53,769 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:53,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 70 [2023-08-26 10:41:53,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-08-26 10:41:53,783 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-08-26 10:41:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034680889] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:54,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:54,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2023-08-26 10:41:54,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231859693] [2023-08-26 10:41:54,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:54,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-26 10:41:54,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-26 10:41:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=720, Unknown=3, NotChecked=0, Total=812 [2023-08-26 10:41:54,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-26 10:41:54,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1391 flow. Second operand has 29 states, 29 states have (on average 122.34482758620689) internal successors, (3548), 29 states have internal predecessors, (3548), 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) [2023-08-26 10:41:54,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:54,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-26 10:41:54,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:57,277 INFO L124 PetriNetUnfolderBase]: 964/1808 cut-off events. [2023-08-26 10:41:57,278 INFO L125 PetriNetUnfolderBase]: For 15183/15183 co-relation queries the response was YES. [2023-08-26 10:41:57,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10766 conditions, 1808 events. 964/1808 cut-off events. For 15183/15183 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10057 event pairs, 128 based on Foata normal form. 5/1786 useless extension candidates. Maximal degree in co-relation 10732. Up to 1097 conditions per place. [2023-08-26 10:41:57,295 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 159 selfloop transitions, 45 changer transitions 87/292 dead transitions. [2023-08-26 10:41:57,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 292 transitions, 2462 flow [2023-08-26 10:41:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 10:41:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 10:41:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3226 transitions. [2023-08-26 10:41:57,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2699581589958159 [2023-08-26 10:41:57,301 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3226 transitions. [2023-08-26 10:41:57,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3226 transitions. [2023-08-26 10:41:57,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:57,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3226 transitions. [2023-08-26 10:41:57,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 129.04) internal successors, (3226), 25 states have internal predecessors, (3226), 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) [2023-08-26 10:41:57,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 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) [2023-08-26 10:41:57,314 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 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) [2023-08-26 10:41:57,314 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1391 flow. Second operand 25 states and 3226 transitions. [2023-08-26 10:41:57,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 292 transitions, 2462 flow [2023-08-26 10:41:57,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 292 transitions, 2340 flow, removed 26 selfloop flow, removed 17 redundant places. [2023-08-26 10:41:57,368 INFO L231 Difference]: Finished difference. Result has 135 places, 115 transitions, 1322 flow [2023-08-26 10:41:57,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1322, PETRI_PLACES=135, PETRI_TRANSITIONS=115} [2023-08-26 10:41:57,368 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 64 predicate places. [2023-08-26 10:41:57,369 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 115 transitions, 1322 flow [2023-08-26 10:41:57,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 122.34482758620689) internal successors, (3548), 29 states have internal predecessors, (3548), 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) [2023-08-26 10:41:57,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:57,369 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] [2023-08-26 10:41:57,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 10:41:57,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 10:41:57,575 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:41:57,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1771756332, now seen corresponding path program 4 times [2023-08-26 10:41:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085300396] [2023-08-26 10:41:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:58,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085300396] [2023-08-26 10:41:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085300396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607656865] [2023-08-26 10:41:58,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:41:58,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:58,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:58,369 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:41:58,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 10:41:59,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:41:59,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:41:59,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-26 10:41:59,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:59,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:41:59,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 10:41:59,574 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:41:59,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 10 [2023-08-26 10:41:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:41:59,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:59,930 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:41:59,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 70 [2023-08-26 10:41:59,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-08-26 10:41:59,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-08-26 10:42:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:42:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607656865] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:00,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:00,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-08-26 10:42:00,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604743966] [2023-08-26 10:42:00,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:00,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 10:42:00,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:00,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 10:42:00,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=514, Unknown=7, NotChecked=0, Total=600 [2023-08-26 10:42:00,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-26 10:42:00,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 115 transitions, 1322 flow. Second operand has 25 states, 25 states have (on average 131.36) internal successors, (3284), 25 states have internal predecessors, (3284), 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) [2023-08-26 10:42:00,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:00,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-26 10:42:00,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:01,163 INFO L124 PetriNetUnfolderBase]: 393/889 cut-off events. [2023-08-26 10:42:01,164 INFO L125 PetriNetUnfolderBase]: For 7699/7753 co-relation queries the response was YES. [2023-08-26 10:42:01,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 889 events. 393/889 cut-off events. For 7699/7753 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4851 event pairs, 72 based on Foata normal form. 22/895 useless extension candidates. Maximal degree in co-relation 5052. Up to 634 conditions per place. [2023-08-26 10:42:01,171 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 78 selfloop transitions, 37 changer transitions 30/150 dead transitions. [2023-08-26 10:42:01,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 150 transitions, 1774 flow [2023-08-26 10:42:01,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 10:42:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 10:42:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2005 transitions. [2023-08-26 10:42:01,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2796373779637378 [2023-08-26 10:42:01,180 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2005 transitions. [2023-08-26 10:42:01,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2005 transitions. [2023-08-26 10:42:01,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:01,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2005 transitions. [2023-08-26 10:42:01,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 133.66666666666666) internal successors, (2005), 15 states have internal predecessors, (2005), 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) [2023-08-26 10:42:01,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 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) [2023-08-26 10:42:01,188 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 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) [2023-08-26 10:42:01,188 INFO L175 Difference]: Start difference. First operand has 135 places, 115 transitions, 1322 flow. Second operand 15 states and 2005 transitions. [2023-08-26 10:42:01,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 150 transitions, 1774 flow [2023-08-26 10:42:01,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 150 transitions, 1665 flow, removed 16 selfloop flow, removed 20 redundant places. [2023-08-26 10:42:01,207 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 1312 flow [2023-08-26 10:42:01,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1312, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2023-08-26 10:42:01,207 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 50 predicate places. [2023-08-26 10:42:01,207 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 1312 flow [2023-08-26 10:42:01,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 131.36) internal successors, (3284), 25 states have internal predecessors, (3284), 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) [2023-08-26 10:42:01,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:01,208 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:42:01,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:01,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 10:42:01,416 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:42:01,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -708394183, now seen corresponding path program 5 times [2023-08-26 10:42:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:01,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154673521] [2023-08-26 10:42:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:01,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154673521] [2023-08-26 10:42:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154673521] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215386417] [2023-08-26 10:42:02,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:42:02,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:02,181 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:02,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 10:42:02,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:42:02,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:02,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-26 10:42:02,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:42:02,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:02,831 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:02,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2023-08-26 10:42:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:42:02,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215386417] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:02,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:02,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 18 [2023-08-26 10:42:02,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044992061] [2023-08-26 10:42:02,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:02,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 10:42:02,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:02,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 10:42:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-08-26 10:42:02,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-26 10:42:02,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 1312 flow. Second operand has 20 states, 20 states have (on average 141.0) internal successors, (2820), 20 states have internal predecessors, (2820), 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) [2023-08-26 10:42:02,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:02,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-26 10:42:02,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:03,614 INFO L124 PetriNetUnfolderBase]: 280/757 cut-off events. [2023-08-26 10:42:03,615 INFO L125 PetriNetUnfolderBase]: For 4387/4444 co-relation queries the response was YES. [2023-08-26 10:42:03,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 757 events. 280/757 cut-off events. For 4387/4444 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4546 event pairs, 29 based on Foata normal form. 28/776 useless extension candidates. Maximal degree in co-relation 3801. Up to 372 conditions per place. [2023-08-26 10:42:03,621 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 86 selfloop transitions, 53 changer transitions 4/152 dead transitions. [2023-08-26 10:42:03,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 152 transitions, 1860 flow [2023-08-26 10:42:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 10:42:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 10:42:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2299 transitions. [2023-08-26 10:42:03,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30060146443514646 [2023-08-26 10:42:03,630 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2299 transitions. [2023-08-26 10:42:03,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2299 transitions. [2023-08-26 10:42:03,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:03,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2299 transitions. [2023-08-26 10:42:03,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 143.6875) internal successors, (2299), 16 states have internal predecessors, (2299), 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) [2023-08-26 10:42:03,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 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) [2023-08-26 10:42:03,641 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 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) [2023-08-26 10:42:03,641 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 1312 flow. Second operand 16 states and 2299 transitions. [2023-08-26 10:42:03,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 152 transitions, 1860 flow [2023-08-26 10:42:03,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 152 transitions, 1743 flow, removed 33 selfloop flow, removed 13 redundant places. [2023-08-26 10:42:03,657 INFO L231 Difference]: Finished difference. Result has 109 places, 120 transitions, 1468 flow [2023-08-26 10:42:03,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1468, PETRI_PLACES=109, PETRI_TRANSITIONS=120} [2023-08-26 10:42:03,658 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 38 predicate places. [2023-08-26 10:42:03,658 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 120 transitions, 1468 flow [2023-08-26 10:42:03,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 141.0) internal successors, (2820), 20 states have internal predecessors, (2820), 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) [2023-08-26 10:42:03,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:03,659 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:42:03,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:03,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 10:42:03,866 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:42:03,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1801138085, now seen corresponding path program 6 times [2023-08-26 10:42:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:03,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273955311] [2023-08-26 10:42:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:03,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:04,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:04,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273955311] [2023-08-26 10:42:04,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273955311] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:04,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344557974] [2023-08-26 10:42:04,909 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:42:04,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:04,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:04,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:04,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 10:42:05,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:42:05,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:05,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-26 10:42:05,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:05,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:42:05,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-26 10:42:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:42:05,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:06,041 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:06,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 70 [2023-08-26 10:42:06,050 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-08-26 10:42:06,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-08-26 10:42:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:42:06,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344557974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:06,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:06,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 25 [2023-08-26 10:42:06,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794561363] [2023-08-26 10:42:06,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:06,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 10:42:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 10:42:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=626, Unknown=1, NotChecked=0, Total=702 [2023-08-26 10:42:06,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-26 10:42:06,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 120 transitions, 1468 flow. Second operand has 27 states, 27 states have (on average 131.07407407407408) internal successors, (3539), 27 states have internal predecessors, (3539), 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) [2023-08-26 10:42:06,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:06,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-26 10:42:06,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:07,575 INFO L124 PetriNetUnfolderBase]: 452/1032 cut-off events. [2023-08-26 10:42:07,575 INFO L125 PetriNetUnfolderBase]: For 6537/6572 co-relation queries the response was YES. [2023-08-26 10:42:07,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 1032 events. 452/1032 cut-off events. For 6537/6572 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6082 event pairs, 36 based on Foata normal form. 20/1043 useless extension candidates. Maximal degree in co-relation 5624. Up to 511 conditions per place. [2023-08-26 10:42:07,583 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 111 selfloop transitions, 64 changer transitions 4/184 dead transitions. [2023-08-26 10:42:07,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 184 transitions, 2103 flow [2023-08-26 10:42:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 10:42:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 10:42:07,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2297 transitions. [2023-08-26 10:42:07,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28267290179670196 [2023-08-26 10:42:07,587 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2297 transitions. [2023-08-26 10:42:07,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2297 transitions. [2023-08-26 10:42:07,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:07,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2297 transitions. [2023-08-26 10:42:07,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 135.11764705882354) internal successors, (2297), 17 states have internal predecessors, (2297), 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) [2023-08-26 10:42:07,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 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) [2023-08-26 10:42:07,595 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 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) [2023-08-26 10:42:07,595 INFO L175 Difference]: Start difference. First operand has 109 places, 120 transitions, 1468 flow. Second operand 17 states and 2297 transitions. [2023-08-26 10:42:07,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 184 transitions, 2103 flow [2023-08-26 10:42:07,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 2008 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-08-26 10:42:07,616 INFO L231 Difference]: Finished difference. Result has 120 places, 128 transitions, 1655 flow [2023-08-26 10:42:07,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1655, PETRI_PLACES=120, PETRI_TRANSITIONS=128} [2023-08-26 10:42:07,617 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 49 predicate places. [2023-08-26 10:42:07,617 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 128 transitions, 1655 flow [2023-08-26 10:42:07,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 131.07407407407408) internal successors, (3539), 27 states have internal predecessors, (3539), 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) [2023-08-26 10:42:07,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:07,618 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:42:07,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:07,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 10:42:07,825 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:42:07,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1929747610, now seen corresponding path program 7 times [2023-08-26 10:42:07,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:07,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48332786] [2023-08-26 10:42:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:07,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:42:07,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48332786] [2023-08-26 10:42:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48332786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123663089] [2023-08-26 10:42:07,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:42:07,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:07,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:07,935 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:07,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 10:42:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:08,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 10:42:08,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:42:08,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:42:08,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123663089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:08,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-26 10:42:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210552431] [2023-08-26 10:42:08,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:08,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:42:08,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:42:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 10:42:08,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 478 [2023-08-26 10:42:08,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 128 transitions, 1655 flow. Second operand has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 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) [2023-08-26 10:42:08,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:08,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 478 [2023-08-26 10:42:08,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:08,424 INFO L124 PetriNetUnfolderBase]: 396/1005 cut-off events. [2023-08-26 10:42:08,424 INFO L125 PetriNetUnfolderBase]: For 5291/5364 co-relation queries the response was YES. [2023-08-26 10:42:08,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 1005 events. 396/1005 cut-off events. For 5291/5364 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6297 event pairs, 20 based on Foata normal form. 37/1027 useless extension candidates. Maximal degree in co-relation 5102. Up to 289 conditions per place. [2023-08-26 10:42:08,432 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 72 selfloop transitions, 57 changer transitions 26/170 dead transitions. [2023-08-26 10:42:08,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 2318 flow [2023-08-26 10:42:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 10:42:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 10:42:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 958 transitions. [2023-08-26 10:42:08,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.400836820083682 [2023-08-26 10:42:08,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 958 transitions. [2023-08-26 10:42:08,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 958 transitions. [2023-08-26 10:42:08,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:08,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 958 transitions. [2023-08-26 10:42:08,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.6) internal successors, (958), 5 states have internal predecessors, (958), 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) [2023-08-26 10:42:08,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 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) [2023-08-26 10:42:08,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 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) [2023-08-26 10:42:08,437 INFO L175 Difference]: Start difference. First operand has 120 places, 128 transitions, 1655 flow. Second operand 5 states and 958 transitions. [2023-08-26 10:42:08,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 2318 flow [2023-08-26 10:42:08,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 170 transitions, 2225 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-26 10:42:08,456 INFO L231 Difference]: Finished difference. Result has 116 places, 124 transitions, 1555 flow [2023-08-26 10:42:08,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1555, PETRI_PLACES=116, PETRI_TRANSITIONS=124} [2023-08-26 10:42:08,457 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 45 predicate places. [2023-08-26 10:42:08,457 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 1555 flow [2023-08-26 10:42:08,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 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) [2023-08-26 10:42:08,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:08,457 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:42:08,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:08,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 10:42:08,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:42:08,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash 140662642, now seen corresponding path program 8 times [2023-08-26 10:42:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:08,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391179679] [2023-08-26 10:42:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:09,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:09,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391179679] [2023-08-26 10:42:09,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391179679] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:09,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553102356] [2023-08-26 10:42:09,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:42:09,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:09,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:09,514 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:09,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 10:42:09,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:42:09,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:09,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-26 10:42:09,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:10,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:10,143 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-26 10:42:10,143 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-26 10:42:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:10,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553102356] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:10,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:10,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-08-26 10:42:10,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777658385] [2023-08-26 10:42:10,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:10,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-26 10:42:10,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:10,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-26 10:42:10,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2023-08-26 10:42:10,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-26 10:42:10,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 1555 flow. Second operand has 30 states, 30 states have (on average 140.7) internal successors, (4221), 30 states have internal predecessors, (4221), 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) [2023-08-26 10:42:10,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:10,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-26 10:42:10,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:13,491 INFO L124 PetriNetUnfolderBase]: 676/1639 cut-off events. [2023-08-26 10:42:13,491 INFO L125 PetriNetUnfolderBase]: For 12117/12293 co-relation queries the response was YES. [2023-08-26 10:42:13,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 1639 events. 676/1639 cut-off events. For 12117/12293 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11129 event pairs, 40 based on Foata normal form. 156/1775 useless extension candidates. Maximal degree in co-relation 8827. Up to 667 conditions per place. [2023-08-26 10:42:13,502 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 210 selfloop transitions, 175 changer transitions 2/396 dead transitions. [2023-08-26 10:42:13,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 396 transitions, 4691 flow [2023-08-26 10:42:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-26 10:42:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-26 10:42:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 6545 transitions. [2023-08-26 10:42:13,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30427708042770807 [2023-08-26 10:42:13,509 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 6545 transitions. [2023-08-26 10:42:13,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 6545 transitions. [2023-08-26 10:42:13,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:13,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 6545 transitions. [2023-08-26 10:42:13,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 145.44444444444446) internal successors, (6545), 45 states have internal predecessors, (6545), 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) [2023-08-26 10:42:13,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 478.0) internal successors, (21988), 46 states have internal predecessors, (21988), 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) [2023-08-26 10:42:13,534 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 478.0) internal successors, (21988), 46 states have internal predecessors, (21988), 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) [2023-08-26 10:42:13,534 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 1555 flow. Second operand 45 states and 6545 transitions. [2023-08-26 10:42:13,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 396 transitions, 4691 flow [2023-08-26 10:42:13,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 396 transitions, 4071 flow, removed 286 selfloop flow, removed 9 redundant places. [2023-08-26 10:42:13,571 INFO L231 Difference]: Finished difference. Result has 166 places, 254 transitions, 3514 flow [2023-08-26 10:42:13,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3514, PETRI_PLACES=166, PETRI_TRANSITIONS=254} [2023-08-26 10:42:13,572 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 95 predicate places. [2023-08-26 10:42:13,572 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 254 transitions, 3514 flow [2023-08-26 10:42:13,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 140.7) internal successors, (4221), 30 states have internal predecessors, (4221), 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) [2023-08-26 10:42:13,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:13,573 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:42:13,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:13,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:13,780 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:42:13,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -172282578, now seen corresponding path program 9 times [2023-08-26 10:42:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029242469] [2023-08-26 10:42:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:14,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029242469] [2023-08-26 10:42:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029242469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230925162] [2023-08-26 10:42:14,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:42:14,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:14,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:14,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:14,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 10:42:14,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:42:14,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:14,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-26 10:42:14,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:14,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:42:14,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 10:42:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:42:15,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:15,073 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2071 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2071) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 4)) 0))) is different from false [2023-08-26 10:42:15,085 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:15,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 40 [2023-08-26 10:42:15,088 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-26 10:42:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 2 not checked. [2023-08-26 10:42:15,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230925162] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:15,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:15,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 23 [2023-08-26 10:42:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045871865] [2023-08-26 10:42:15,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 10:42:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 10:42:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=449, Unknown=1, NotChecked=42, Total=552 [2023-08-26 10:42:15,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 478 [2023-08-26 10:42:15,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 254 transitions, 3514 flow. Second operand has 24 states, 24 states have (on average 133.125) internal successors, (3195), 24 states have internal predecessors, (3195), 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) [2023-08-26 10:42:15,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:15,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 478 [2023-08-26 10:42:15,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:17,704 INFO L124 PetriNetUnfolderBase]: 1588/3180 cut-off events. [2023-08-26 10:42:17,704 INFO L125 PetriNetUnfolderBase]: For 84355/84502 co-relation queries the response was YES. [2023-08-26 10:42:17,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21758 conditions, 3180 events. 1588/3180 cut-off events. For 84355/84502 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 21121 event pairs, 47 based on Foata normal form. 179/3356 useless extension candidates. Maximal degree in co-relation 21702. Up to 1257 conditions per place. [2023-08-26 10:42:17,735 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 283 selfloop transitions, 297 changer transitions 5/590 dead transitions. [2023-08-26 10:42:17,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 590 transitions, 7868 flow [2023-08-26 10:42:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 10:42:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 10:42:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4448 transitions. [2023-08-26 10:42:17,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2907949790794979 [2023-08-26 10:42:17,741 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4448 transitions. [2023-08-26 10:42:17,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4448 transitions. [2023-08-26 10:42:17,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:17,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4448 transitions. [2023-08-26 10:42:17,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 139.0) internal successors, (4448), 32 states have internal predecessors, (4448), 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) [2023-08-26 10:42:17,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 478.0) internal successors, (15774), 33 states have internal predecessors, (15774), 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) [2023-08-26 10:42:17,758 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 478.0) internal successors, (15774), 33 states have internal predecessors, (15774), 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) [2023-08-26 10:42:17,758 INFO L175 Difference]: Start difference. First operand has 166 places, 254 transitions, 3514 flow. Second operand 32 states and 4448 transitions. [2023-08-26 10:42:17,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 590 transitions, 7868 flow [2023-08-26 10:42:18,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 590 transitions, 6354 flow, removed 744 selfloop flow, removed 10 redundant places. [2023-08-26 10:42:18,106 INFO L231 Difference]: Finished difference. Result has 194 places, 407 transitions, 5511 flow [2023-08-26 10:42:18,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=5511, PETRI_PLACES=194, PETRI_TRANSITIONS=407} [2023-08-26 10:42:18,107 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 123 predicate places. [2023-08-26 10:42:18,107 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 407 transitions, 5511 flow [2023-08-26 10:42:18,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 133.125) internal successors, (3195), 24 states have internal predecessors, (3195), 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) [2023-08-26 10:42:18,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:18,108 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:42:18,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:18,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:18,314 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:42:18,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash 248632361, now seen corresponding path program 10 times [2023-08-26 10:42:18,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:18,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939954870] [2023-08-26 10:42:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:18,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:19,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939954870] [2023-08-26 10:42:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939954870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898800172] [2023-08-26 10:42:19,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:42:19,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:19,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:19,285 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:19,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 10:42:21,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:42:21,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:21,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-26 10:42:21,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:21,923 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-26 10:42:21,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 38 [2023-08-26 10:42:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:22,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:22,544 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:22,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 148 [2023-08-26 10:42:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:23,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898800172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:23,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:23,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2023-08-26 10:42:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996267201] [2023-08-26 10:42:23,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:23,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-26 10:42:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-26 10:42:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1164, Unknown=0, NotChecked=0, Total=1332 [2023-08-26 10:42:23,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-26 10:42:23,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 407 transitions, 5511 flow. Second operand has 37 states, 37 states have (on average 140.56756756756758) internal successors, (5201), 37 states have internal predecessors, (5201), 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) [2023-08-26 10:42:23,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:23,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-26 10:42:23,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:25,818 INFO L124 PetriNetUnfolderBase]: 1158/2760 cut-off events. [2023-08-26 10:42:25,818 INFO L125 PetriNetUnfolderBase]: For 37138/37349 co-relation queries the response was YES. [2023-08-26 10:42:25,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15917 conditions, 2760 events. 1158/2760 cut-off events. For 37138/37349 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 20772 event pairs, 118 based on Foata normal form. 20/2734 useless extension candidates. Maximal degree in co-relation 15853. Up to 1935 conditions per place. [2023-08-26 10:42:25,844 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 387 selfloop transitions, 49 changer transitions 29/474 dead transitions. [2023-08-26 10:42:25,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 474 transitions, 6944 flow [2023-08-26 10:42:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 10:42:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 10:42:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3163 transitions. [2023-08-26 10:42:25,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3007797641688855 [2023-08-26 10:42:25,848 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3163 transitions. [2023-08-26 10:42:25,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3163 transitions. [2023-08-26 10:42:25,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:25,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3163 transitions. [2023-08-26 10:42:25,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 143.77272727272728) internal successors, (3163), 22 states have internal predecessors, (3163), 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) [2023-08-26 10:42:25,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 478.0) internal successors, (10994), 23 states have internal predecessors, (10994), 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) [2023-08-26 10:42:25,859 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 478.0) internal successors, (10994), 23 states have internal predecessors, (10994), 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) [2023-08-26 10:42:25,859 INFO L175 Difference]: Start difference. First operand has 194 places, 407 transitions, 5511 flow. Second operand 22 states and 3163 transitions. [2023-08-26 10:42:25,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 474 transitions, 6944 flow [2023-08-26 10:42:26,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 474 transitions, 5658 flow, removed 536 selfloop flow, removed 17 redundant places. [2023-08-26 10:42:26,145 INFO L231 Difference]: Finished difference. Result has 209 places, 417 transitions, 4633 flow [2023-08-26 10:42:26,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=4381, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4633, PETRI_PLACES=209, PETRI_TRANSITIONS=417} [2023-08-26 10:42:26,146 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 138 predicate places. [2023-08-26 10:42:26,146 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 417 transitions, 4633 flow [2023-08-26 10:42:26,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 140.56756756756758) internal successors, (5201), 37 states have internal predecessors, (5201), 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) [2023-08-26 10:42:26,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:26,147 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:42:26,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:26,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:26,357 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:42:26,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:26,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2093787347, now seen corresponding path program 11 times [2023-08-26 10:42:26,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:26,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390240207] [2023-08-26 10:42:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:26,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:27,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:27,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390240207] [2023-08-26 10:42:27,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390240207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:27,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769630305] [2023-08-26 10:42:27,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:42:27,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:27,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:27,209 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:27,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 10:42:27,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:42:27,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:27,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-26 10:42:27,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:27,955 INFO L322 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-08-26 10:42:27,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 15 [2023-08-26 10:42:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:42:28,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:28,387 INFO L322 Elim1Store]: treesize reduction 16, result has 80.2 percent of original size [2023-08-26 10:42:28,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 108 [2023-08-26 10:42:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:42:28,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769630305] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:28,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:28,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 26 [2023-08-26 10:42:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257266922] [2023-08-26 10:42:28,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 10:42:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 10:42:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2023-08-26 10:42:28,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-26 10:42:28,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 417 transitions, 4633 flow. Second operand has 28 states, 28 states have (on average 140.92857142857142) internal successors, (3946), 28 states have internal predecessors, (3946), 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) [2023-08-26 10:42:28,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:28,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-26 10:42:28,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:31,267 INFO L124 PetriNetUnfolderBase]: 1248/3071 cut-off events. [2023-08-26 10:42:31,268 INFO L125 PetriNetUnfolderBase]: For 13302/13478 co-relation queries the response was YES. [2023-08-26 10:42:31,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14154 conditions, 3071 events. 1248/3071 cut-off events. For 13302/13478 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 24294 event pairs, 124 based on Foata normal form. 37/3012 useless extension candidates. Maximal degree in co-relation 14087. Up to 1933 conditions per place. [2023-08-26 10:42:31,293 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 394 selfloop transitions, 115 changer transitions 32/550 dead transitions. [2023-08-26 10:42:31,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 550 transitions, 6626 flow [2023-08-26 10:42:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 10:42:31,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 10:42:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4604 transitions. [2023-08-26 10:42:31,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3009937238493724 [2023-08-26 10:42:31,299 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4604 transitions. [2023-08-26 10:42:31,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4604 transitions. [2023-08-26 10:42:31,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:31,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4604 transitions. [2023-08-26 10:42:31,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 143.875) internal successors, (4604), 32 states have internal predecessors, (4604), 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) [2023-08-26 10:42:31,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 478.0) internal successors, (15774), 33 states have internal predecessors, (15774), 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) [2023-08-26 10:42:31,316 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 478.0) internal successors, (15774), 33 states have internal predecessors, (15774), 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) [2023-08-26 10:42:31,316 INFO L175 Difference]: Start difference. First operand has 209 places, 417 transitions, 4633 flow. Second operand 32 states and 4604 transitions. [2023-08-26 10:42:31,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 550 transitions, 6626 flow [2023-08-26 10:42:31,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 550 transitions, 6527 flow, removed 15 selfloop flow, removed 14 redundant places. [2023-08-26 10:42:31,458 INFO L231 Difference]: Finished difference. Result has 234 places, 464 transitions, 5479 flow [2023-08-26 10:42:31,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=4546, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=5479, PETRI_PLACES=234, PETRI_TRANSITIONS=464} [2023-08-26 10:42:31,458 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 163 predicate places. [2023-08-26 10:42:31,459 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 464 transitions, 5479 flow [2023-08-26 10:42:31,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 140.92857142857142) internal successors, (3946), 28 states have internal predecessors, (3946), 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) [2023-08-26 10:42:31,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:31,459 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:42:31,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:31,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:31,672 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:42:31,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1087297673, now seen corresponding path program 12 times [2023-08-26 10:42:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889166067] [2023-08-26 10:42:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:32,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:32,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889166067] [2023-08-26 10:42:32,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889166067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:32,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906105317] [2023-08-26 10:42:32,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:42:32,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:32,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:32,547 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:32,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 10:42:33,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:42:33,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:33,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-26 10:42:33,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:33,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:42:33,183 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:42:33,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:42:33,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:42:33,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:42:33,736 INFO L322 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2023-08-26 10:42:33,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 20 [2023-08-26 10:42:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:33,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:37,838 INFO L322 Elim1Store]: treesize reduction 104, result has 49.3 percent of original size [2023-08-26 10:42:37,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 393 treesize of output 295 [2023-08-26 10:42:37,851 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:37,853 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2023-08-26 10:42:37,931 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:37,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 580 treesize of output 651 [2023-08-26 10:42:37,986 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:37,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 508 treesize of output 503 [2023-08-26 10:42:38,049 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:38,050 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 458 treesize of output 478 [2023-08-26 10:42:38,122 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:38,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 433 treesize of output 428 [2023-08-26 10:42:38,211 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:38,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 383 treesize of output 403 [2023-08-26 10:42:38,387 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:38,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 393 treesize of output 476 [2023-08-26 10:45:48,097 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-26 10:45:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:45:48,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906105317] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:45:48,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:45:48,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 37 [2023-08-26 10:45:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011364369] [2023-08-26 10:45:48,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:45:48,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-26 10:45:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:45:48,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-26 10:45:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1300, Unknown=6, NotChecked=0, Total=1482 [2023-08-26 10:45:48,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-26 10:45:48,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 464 transitions, 5479 flow. Second operand has 39 states, 39 states have (on average 122.1025641025641) internal successors, (4762), 39 states have internal predecessors, (4762), 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) [2023-08-26 10:45:48,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:45:48,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-26 10:45:48,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:45:51,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:46:00,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:46:02,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:46:05,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:46:08,176 INFO L124 PetriNetUnfolderBase]: 4846/8365 cut-off events. [2023-08-26 10:46:08,176 INFO L125 PetriNetUnfolderBase]: For 45734/45734 co-relation queries the response was YES. [2023-08-26 10:46:08,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45040 conditions, 8365 events. 4846/8365 cut-off events. For 45734/45734 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 55453 event pairs, 1002 based on Foata normal form. 5/8081 useless extension candidates. Maximal degree in co-relation 44965. Up to 7012 conditions per place. [2023-08-26 10:46:08,249 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 577 selfloop transitions, 105 changer transitions 104/787 dead transitions. [2023-08-26 10:46:08,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 787 transitions, 8568 flow [2023-08-26 10:46:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-26 10:46:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-26 10:46:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4768 transitions. [2023-08-26 10:46:08,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2695917674997173 [2023-08-26 10:46:08,256 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4768 transitions. [2023-08-26 10:46:08,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4768 transitions. [2023-08-26 10:46:08,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:46:08,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4768 transitions. [2023-08-26 10:46:08,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 128.86486486486487) internal successors, (4768), 37 states have internal predecessors, (4768), 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) [2023-08-26 10:46:08,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 478.0) internal successors, (18164), 38 states have internal predecessors, (18164), 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) [2023-08-26 10:46:08,274 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 478.0) internal successors, (18164), 38 states have internal predecessors, (18164), 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) [2023-08-26 10:46:08,274 INFO L175 Difference]: Start difference. First operand has 234 places, 464 transitions, 5479 flow. Second operand 37 states and 4768 transitions. [2023-08-26 10:46:08,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 787 transitions, 8568 flow [2023-08-26 10:46:08,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 787 transitions, 8387 flow, removed 66 selfloop flow, removed 16 redundant places. [2023-08-26 10:46:08,961 INFO L231 Difference]: Finished difference. Result has 268 places, 530 transitions, 6384 flow [2023-08-26 10:46:08,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6384, PETRI_PLACES=268, PETRI_TRANSITIONS=530} [2023-08-26 10:46:08,962 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 197 predicate places. [2023-08-26 10:46:08,962 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 530 transitions, 6384 flow [2023-08-26 10:46:08,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 122.1025641025641) internal successors, (4762), 39 states have internal predecessors, (4762), 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) [2023-08-26 10:46:08,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:46:08,963 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:46:08,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 10:46:09,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:46:09,164 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:46:09,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:46:09,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1707324185, now seen corresponding path program 13 times [2023-08-26 10:46:09,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:46:09,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866476545] [2023-08-26 10:46:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:46:09,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:46:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:46:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:46:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:46:10,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866476545] [2023-08-26 10:46:10,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866476545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:46:10,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057006689] [2023-08-26 10:46:10,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:46:10,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:46:10,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:46:10,101 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:46:10,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 10:46:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:46:10,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-26 10:46:10,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:46:10,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 10:46:10,514 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 10:46:10,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 10:46:10,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:46:10,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:46:10,951 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:46:10,953 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:46:10,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 15 [2023-08-26 10:46:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:46:11,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:46:14,367 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:46:14,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 110 [2023-08-26 10:46:14,418 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-26 10:46:14,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 254 treesize of output 257 [2023-08-26 10:46:14,465 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-26 10:46:14,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 221 treesize of output 207 [2023-08-26 10:46:14,517 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-26 10:46:14,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 155 [2023-08-26 10:46:16,235 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:46:16,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 110 [2023-08-26 10:46:16,263 INFO L322 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-08-26 10:46:16,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 538 treesize of output 480 [2023-08-26 10:46:16,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:46:16,280 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:46:16,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:46:16,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 144 [2023-08-26 10:46:16,307 INFO L322 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-08-26 10:46:16,307 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 169 treesize of output 127 [2023-08-26 10:46:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:46:16,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057006689] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:46:16,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:46:16,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2023-08-26 10:46:16,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267321773] [2023-08-26 10:46:16,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:46:16,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-26 10:46:16,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:46:16,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-26 10:46:16,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1136, Unknown=6, NotChecked=0, Total=1332 [2023-08-26 10:46:16,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-26 10:46:16,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 530 transitions, 6384 flow. Second operand has 37 states, 37 states have (on average 122.05405405405405) internal successors, (4516), 37 states have internal predecessors, (4516), 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) [2023-08-26 10:46:16,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:46:16,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-26 10:46:16,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:46:29,556 WARN L234 SmtUtils]: Spent 12.55s on a formula simplification. DAG size of input: 101 DAG size of output: 92 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:46:38,167 WARN L234 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 116 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:46:46,758 WARN L234 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 108 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:46:55,074 WARN L234 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 99 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:47:04,361 WARN L234 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 107 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:47:10,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:13,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:15,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:17,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:19,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:22,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:28,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:30,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:32,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:41,361 WARN L234 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 131 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:47:47,922 WARN L234 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 115 DAG size of output: 106 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:47:50,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:52,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:54,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:56,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:47:58,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:48:00,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:48:03,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:48:06,328 INFO L124 PetriNetUnfolderBase]: 5821/9939 cut-off events. [2023-08-26 10:48:06,329 INFO L125 PetriNetUnfolderBase]: For 61837/61840 co-relation queries the response was YES. [2023-08-26 10:48:06,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55207 conditions, 9939 events. 5821/9939 cut-off events. For 61837/61840 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 67321 event pairs, 711 based on Foata normal form. 9/9623 useless extension candidates. Maximal degree in co-relation 55118. Up to 6099 conditions per place. [2023-08-26 10:48:06,427 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 707 selfloop transitions, 217 changer transitions 58/983 dead transitions. [2023-08-26 10:48:06,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 983 transitions, 11032 flow [2023-08-26 10:48:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-26 10:48:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-26 10:48:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4952 transitions. [2023-08-26 10:48:06,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2726271746311385 [2023-08-26 10:48:06,434 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4952 transitions. [2023-08-26 10:48:06,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4952 transitions. [2023-08-26 10:48:06,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:48:06,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4952 transitions. [2023-08-26 10:48:06,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 130.31578947368422) internal successors, (4952), 38 states have internal predecessors, (4952), 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) [2023-08-26 10:48:06,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 478.0) internal successors, (18642), 39 states have internal predecessors, (18642), 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) [2023-08-26 10:48:06,452 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 478.0) internal successors, (18642), 39 states have internal predecessors, (18642), 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) [2023-08-26 10:48:06,452 INFO L175 Difference]: Start difference. First operand has 268 places, 530 transitions, 6384 flow. Second operand 38 states and 4952 transitions. [2023-08-26 10:48:06,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 983 transitions, 11032 flow [2023-08-26 10:48:07,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 983 transitions, 10832 flow, removed 81 selfloop flow, removed 17 redundant places. [2023-08-26 10:48:07,288 INFO L231 Difference]: Finished difference. Result has 295 places, 667 transitions, 8610 flow [2023-08-26 10:48:07,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6220, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8610, PETRI_PLACES=295, PETRI_TRANSITIONS=667} [2023-08-26 10:48:07,289 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 224 predicate places. [2023-08-26 10:48:07,289 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 667 transitions, 8610 flow [2023-08-26 10:48:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 122.05405405405405) internal successors, (4516), 37 states have internal predecessors, (4516), 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) [2023-08-26 10:48:07,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:48:07,290 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:48:07,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-26 10:48:07,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:48:07,493 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:48:07,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:48:07,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1255241373, now seen corresponding path program 14 times [2023-08-26 10:48:07,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:48:07,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694885050] [2023-08-26 10:48:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:48:07,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:48:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:48:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:48:08,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:48:08,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694885050] [2023-08-26 10:48:08,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694885050] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:48:08,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180810222] [2023-08-26 10:48:08,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:48:08,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:48:08,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:48:08,936 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:48:08,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 10:48:09,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:48:09,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:48:09,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-26 10:48:09,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:48:09,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:48:09,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:48:09,352 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:48:09,397 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:48:09,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:48:09,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2023-08-26 10:48:09,975 INFO L322 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-08-26 10:48:09,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 19 [2023-08-26 10:48:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:48:10,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:48:21,741 INFO L322 Elim1Store]: treesize reduction 104, result has 49.3 percent of original size [2023-08-26 10:48:21,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 555 treesize of output 353 [2023-08-26 10:48:21,750 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:48:21,752 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2023-08-26 10:48:21,889 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:48:21,890 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 692 treesize of output 746 [2023-08-26 10:48:21,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 603 treesize of output 551 [2023-08-26 10:48:22,019 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:48:22,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 551 treesize of output 558 [2023-08-26 10:48:22,176 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:48:22,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 548 treesize of output 618 [2023-08-26 10:48:22,232 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:48:22,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 475 treesize of output 423 [2023-08-26 10:48:22,319 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:48:22,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 423 treesize of output 430 [2023-08-26 10:49:26,653 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-26 10:49:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:49:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180810222] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:49:26,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:49:26,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2023-08-26 10:49:26,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360026820] [2023-08-26 10:49:26,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:49:26,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-26 10:49:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:49:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-26 10:49:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1273, Unknown=5, NotChecked=0, Total=1406 [2023-08-26 10:49:26,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-26 10:49:26,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 667 transitions, 8610 flow. Second operand has 38 states, 38 states have (on average 122.15789473684211) internal successors, (4642), 38 states have internal predecessors, (4642), 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) [2023-08-26 10:49:26,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:49:26,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-26 10:49:26,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:49:34,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:49:47,168 INFO L124 PetriNetUnfolderBase]: 9162/16030 cut-off events. [2023-08-26 10:49:47,169 INFO L125 PetriNetUnfolderBase]: For 103651/103651 co-relation queries the response was YES. [2023-08-26 10:49:47,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90649 conditions, 16030 events. 9162/16030 cut-off events. For 103651/103651 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 121970 event pairs, 840 based on Foata normal form. 357/15942 useless extension candidates. Maximal degree in co-relation 90552. Up to 3802 conditions per place. [2023-08-26 10:49:47,306 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 573 selfloop transitions, 103 changer transitions 769/1446 dead transitions. [2023-08-26 10:49:47,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1446 transitions, 17536 flow [2023-08-26 10:49:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-26 10:49:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-26 10:49:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 5623 transitions. [2023-08-26 10:49:47,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27357205410139146 [2023-08-26 10:49:47,313 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 5623 transitions. [2023-08-26 10:49:47,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 5623 transitions. [2023-08-26 10:49:47,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:49:47,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 5623 transitions. [2023-08-26 10:49:47,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 130.7674418604651) internal successors, (5623), 43 states have internal predecessors, (5623), 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) [2023-08-26 10:49:47,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 478.0) internal successors, (21032), 44 states have internal predecessors, (21032), 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) [2023-08-26 10:49:47,333 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 478.0) internal successors, (21032), 44 states have internal predecessors, (21032), 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) [2023-08-26 10:49:47,333 INFO L175 Difference]: Start difference. First operand has 295 places, 667 transitions, 8610 flow. Second operand 43 states and 5623 transitions. [2023-08-26 10:49:47,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1446 transitions, 17536 flow [2023-08-26 10:49:49,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1446 transitions, 17014 flow, removed 213 selfloop flow, removed 26 redundant places. [2023-08-26 10:49:49,789 INFO L231 Difference]: Finished difference. Result has 331 places, 449 transitions, 6245 flow [2023-08-26 10:49:49,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=8136, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6245, PETRI_PLACES=331, PETRI_TRANSITIONS=449} [2023-08-26 10:49:49,790 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 260 predicate places. [2023-08-26 10:49:49,790 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 449 transitions, 6245 flow [2023-08-26 10:49:49,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 122.15789473684211) internal successors, (4642), 38 states have internal predecessors, (4642), 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) [2023-08-26 10:49:49,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:49:49,790 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:49:49,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-26 10:49:49,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-26 10:49:49,991 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:49:49,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:49:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash 546753039, now seen corresponding path program 15 times [2023-08-26 10:49:49,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:49:49,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125926046] [2023-08-26 10:49:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:49:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:49:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:49:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:49:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:49:51,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125926046] [2023-08-26 10:49:51,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125926046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:49:51,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672476446] [2023-08-26 10:49:51,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:49:51,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:49:51,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:49:51,093 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:49:51,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 10:49:51,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:49:51,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:49:51,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-26 10:49:51,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:49:51,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:49:51,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-08-26 10:49:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:49:52,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:49:52,486 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:49:52,487 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 197 treesize of output 166 [2023-08-26 10:49:52,520 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:49:52,520 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 102 [2023-08-26 10:49:52,529 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:49:52,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 83 [2023-08-26 10:49:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:49:52,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672476446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:49:52,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:49:52,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 30 [2023-08-26 10:49:52,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802305565] [2023-08-26 10:49:52,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:49:52,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 10:49:52,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:49:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 10:49:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=904, Unknown=1, NotChecked=0, Total=992 [2023-08-26 10:49:52,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-26 10:49:52,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 449 transitions, 6245 flow. Second operand has 32 states, 32 states have (on average 131.0625) internal successors, (4194), 32 states have internal predecessors, (4194), 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) [2023-08-26 10:49:52,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:49:52,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-26 10:49:52,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:49:56,151 INFO L124 PetriNetUnfolderBase]: 1775/3779 cut-off events. [2023-08-26 10:49:56,152 INFO L125 PetriNetUnfolderBase]: For 45969/46206 co-relation queries the response was YES. [2023-08-26 10:49:56,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23899 conditions, 3779 events. 1775/3779 cut-off events. For 45969/46206 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 27724 event pairs, 244 based on Foata normal form. 41/3786 useless extension candidates. Maximal degree in co-relation 23786. Up to 2756 conditions per place. [2023-08-26 10:49:56,185 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 400 selfloop transitions, 119 changer transitions 76/600 dead transitions. [2023-08-26 10:49:56,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 600 transitions, 8361 flow [2023-08-26 10:49:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 10:49:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 10:49:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4062 transitions. [2023-08-26 10:49:56,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28326359832635983 [2023-08-26 10:49:56,189 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4062 transitions. [2023-08-26 10:49:56,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4062 transitions. [2023-08-26 10:49:56,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:49:56,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4062 transitions. [2023-08-26 10:49:56,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 135.4) internal successors, (4062), 30 states have internal predecessors, (4062), 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) [2023-08-26 10:49:56,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 478.0) internal successors, (14818), 31 states have internal predecessors, (14818), 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) [2023-08-26 10:49:56,201 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 478.0) internal successors, (14818), 31 states have internal predecessors, (14818), 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) [2023-08-26 10:49:56,201 INFO L175 Difference]: Start difference. First operand has 331 places, 449 transitions, 6245 flow. Second operand 30 states and 4062 transitions. [2023-08-26 10:49:56,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 600 transitions, 8361 flow [2023-08-26 10:49:56,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 600 transitions, 7670 flow, removed 227 selfloop flow, removed 44 redundant places. [2023-08-26 10:49:56,547 INFO L231 Difference]: Finished difference. Result has 285 places, 461 transitions, 6214 flow [2023-08-26 10:49:56,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5584, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6214, PETRI_PLACES=285, PETRI_TRANSITIONS=461} [2023-08-26 10:49:56,548 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 214 predicate places. [2023-08-26 10:49:56,548 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 461 transitions, 6214 flow [2023-08-26 10:49:56,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 131.0625) internal successors, (4194), 32 states have internal predecessors, (4194), 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) [2023-08-26 10:49:56,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:49:56,549 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:49:56,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-26 10:49:56,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-26 10:49:56,749 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:49:56,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:49:56,750 INFO L85 PathProgramCache]: Analyzing trace with hash 730917091, now seen corresponding path program 16 times [2023-08-26 10:49:56,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:49:56,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877386040] [2023-08-26 10:49:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:49:56,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:49:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:49:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:49:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:49:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877386040] [2023-08-26 10:49:57,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877386040] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:49:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988945081] [2023-08-26 10:49:57,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:49:57,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:49:57,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:49:57,782 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:49:57,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-26 10:50:00,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:50:00,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:50:00,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-26 10:50:00,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:01,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:50:01,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2023-08-26 10:50:01,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:50:01,464 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:50:01,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:50:01,469 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:01,469 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 22 [2023-08-26 10:50:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:50:01,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:02,208 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-26 10:50:02,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 407 treesize of output 330 [2023-08-26 10:50:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:50:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988945081] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:02,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:02,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 30 [2023-08-26 10:50:02,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765774126] [2023-08-26 10:50:02,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 10:50:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 10:50:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2023-08-26 10:50:02,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-26 10:50:02,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 461 transitions, 6214 flow. Second operand has 32 states, 32 states have (on average 130.90625) internal successors, (4189), 32 states have internal predecessors, (4189), 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) [2023-08-26 10:50:02,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:02,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-26 10:50:02,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:50:14,449 INFO L124 PetriNetUnfolderBase]: 1870/3994 cut-off events. [2023-08-26 10:50:14,449 INFO L125 PetriNetUnfolderBase]: For 43737/43917 co-relation queries the response was YES. [2023-08-26 10:50:14,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24287 conditions, 3994 events. 1870/3994 cut-off events. For 43737/43917 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 29728 event pairs, 243 based on Foata normal form. 57/3996 useless extension candidates. Maximal degree in co-relation 24185. Up to 2605 conditions per place. [2023-08-26 10:50:14,490 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 383 selfloop transitions, 195 changer transitions 82/665 dead transitions. [2023-08-26 10:50:14,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 665 transitions, 8836 flow [2023-08-26 10:50:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-26 10:50:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-26 10:50:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5542 transitions. [2023-08-26 10:50:14,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28278395754668845 [2023-08-26 10:50:14,495 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5542 transitions. [2023-08-26 10:50:14,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5542 transitions. [2023-08-26 10:50:14,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:50:14,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5542 transitions. [2023-08-26 10:50:14,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 135.17073170731706) internal successors, (5542), 41 states have internal predecessors, (5542), 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) [2023-08-26 10:50:14,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 478.0) internal successors, (20076), 42 states have internal predecessors, (20076), 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) [2023-08-26 10:50:14,513 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 478.0) internal successors, (20076), 42 states have internal predecessors, (20076), 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) [2023-08-26 10:50:14,513 INFO L175 Difference]: Start difference. First operand has 285 places, 461 transitions, 6214 flow. Second operand 41 states and 5542 transitions. [2023-08-26 10:50:14,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 665 transitions, 8836 flow [2023-08-26 10:50:14,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 665 transitions, 8349 flow, removed 167 selfloop flow, removed 27 redundant places. [2023-08-26 10:50:14,879 INFO L231 Difference]: Finished difference. Result has 302 places, 489 transitions, 6821 flow [2023-08-26 10:50:14,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5694, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=6821, PETRI_PLACES=302, PETRI_TRANSITIONS=489} [2023-08-26 10:50:14,880 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 231 predicate places. [2023-08-26 10:50:14,880 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 489 transitions, 6821 flow [2023-08-26 10:50:14,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 130.90625) internal successors, (4189), 32 states have internal predecessors, (4189), 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) [2023-08-26 10:50:14,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:50:14,881 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:50:14,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-26 10:50:15,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-26 10:50:15,081 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:50:15,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:50:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1582541444, now seen corresponding path program 17 times [2023-08-26 10:50:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:50:15,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775738572] [2023-08-26 10:50:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:50:15,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:50:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:16,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:50:16,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775738572] [2023-08-26 10:50:16,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775738572] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:50:16,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789655109] [2023-08-26 10:50:16,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:50:16,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:16,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:50:16,676 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:50:16,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-26 10:50:18,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 10:50:18,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:50:18,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-26 10:50:18,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:18,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:50:18,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-26 10:50:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:50:18,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:18,897 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* c_~q_front~0 4) c_~q~0.offset))) (and (forall ((v_ArrVal_3401 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3401) c_~q~0.base) .cse1))) (or (= .cse0 0) (< (+ c_~s~0 .cse0) (+ c_~N~0 1))))) (forall ((v_ArrVal_3401 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3401) c_~q~0.base) .cse1))) (or (= .cse2 0) (<= c_~N~0 (+ c_~s~0 .cse2))))))) is different from false [2023-08-26 10:50:19,002 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:19,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 112 [2023-08-26 10:50:19,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 87 [2023-08-26 10:50:19,016 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 75 [2023-08-26 10:50:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-26 10:50:19,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789655109] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:19,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:19,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 7] total 30 [2023-08-26 10:50:19,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516735483] [2023-08-26 10:50:19,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:19,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 10:50:19,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 10:50:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=831, Unknown=1, NotChecked=58, Total=992 [2023-08-26 10:50:19,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-26 10:50:19,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 489 transitions, 6821 flow. Second operand has 32 states, 32 states have (on average 130.84375) internal successors, (4187), 32 states have internal predecessors, (4187), 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) [2023-08-26 10:50:19,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:19,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-26 10:50:19,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:50:21,513 INFO L124 PetriNetUnfolderBase]: 1818/3895 cut-off events. [2023-08-26 10:50:21,513 INFO L125 PetriNetUnfolderBase]: For 39372/39537 co-relation queries the response was YES. [2023-08-26 10:50:21,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23807 conditions, 3895 events. 1818/3895 cut-off events. For 39372/39537 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 28880 event pairs, 542 based on Foata normal form. 14/3847 useless extension candidates. Maximal degree in co-relation 23702. Up to 3515 conditions per place. [2023-08-26 10:50:21,546 INFO L140 encePairwiseOnDemand]: 466/478 looper letters, 459 selfloop transitions, 46 changer transitions 43/553 dead transitions. [2023-08-26 10:50:21,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 553 transitions, 8267 flow [2023-08-26 10:50:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 10:50:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 10:50:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2682 transitions. [2023-08-26 10:50:21,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2805439330543933 [2023-08-26 10:50:21,550 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2682 transitions. [2023-08-26 10:50:21,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2682 transitions. [2023-08-26 10:50:21,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:50:21,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2682 transitions. [2023-08-26 10:50:21,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 134.1) internal successors, (2682), 20 states have internal predecessors, (2682), 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) [2023-08-26 10:50:21,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 478.0) internal successors, (10038), 21 states have internal predecessors, (10038), 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) [2023-08-26 10:50:21,558 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 478.0) internal successors, (10038), 21 states have internal predecessors, (10038), 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) [2023-08-26 10:50:21,558 INFO L175 Difference]: Start difference. First operand has 302 places, 489 transitions, 6821 flow. Second operand 20 states and 2682 transitions. [2023-08-26 10:50:21,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 553 transitions, 8267 flow [2023-08-26 10:50:21,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 553 transitions, 7915 flow, removed 94 selfloop flow, removed 25 redundant places. [2023-08-26 10:50:21,787 INFO L231 Difference]: Finished difference. Result has 286 places, 493 transitions, 6650 flow [2023-08-26 10:50:21,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6484, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6650, PETRI_PLACES=286, PETRI_TRANSITIONS=493} [2023-08-26 10:50:21,788 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 215 predicate places. [2023-08-26 10:50:21,788 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 493 transitions, 6650 flow [2023-08-26 10:50:21,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 130.84375) internal successors, (4187), 32 states have internal predecessors, (4187), 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) [2023-08-26 10:50:21,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:50:21,789 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:50:21,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-26 10:50:21,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:21,993 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:50:21,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:50:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1534377356, now seen corresponding path program 18 times [2023-08-26 10:50:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:50:21,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355490431] [2023-08-26 10:50:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:50:21,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:50:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:50:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:50:22,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355490431] [2023-08-26 10:50:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355490431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:50:22,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540469920] [2023-08-26 10:50:22,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:50:22,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:50:22,161 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:50:22,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-26 10:50:23,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:50:23,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:50:23,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-26 10:50:23,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:23,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:24,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540469920] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:24,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:24,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2023-08-26 10:50:24,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089084804] [2023-08-26 10:50:24,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:24,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 10:50:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:24,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 10:50:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-08-26 10:50:24,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 478 [2023-08-26 10:50:24,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 493 transitions, 6650 flow. Second operand has 27 states, 27 states have (on average 162.74074074074073) internal successors, (4394), 27 states have internal predecessors, (4394), 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) [2023-08-26 10:50:24,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:24,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 478 [2023-08-26 10:50:24,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:50:24,702 INFO L124 PetriNetUnfolderBase]: 441/1170 cut-off events. [2023-08-26 10:50:24,703 INFO L125 PetriNetUnfolderBase]: For 13179/13250 co-relation queries the response was YES. [2023-08-26 10:50:24,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7504 conditions, 1170 events. 441/1170 cut-off events. For 13179/13250 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7558 event pairs, 146 based on Foata normal form. 65/1220 useless extension candidates. Maximal degree in co-relation 7401. Up to 765 conditions per place. [2023-08-26 10:50:24,714 INFO L140 encePairwiseOnDemand]: 471/478 looper letters, 168 selfloop transitions, 5 changer transitions 54/241 dead transitions. [2023-08-26 10:50:24,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 241 transitions, 3873 flow [2023-08-26 10:50:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 10:50:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 10:50:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2965 transitions. [2023-08-26 10:50:24,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34460715946071596 [2023-08-26 10:50:24,716 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2965 transitions. [2023-08-26 10:50:24,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2965 transitions. [2023-08-26 10:50:24,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:50:24,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2965 transitions. [2023-08-26 10:50:24,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 164.72222222222223) internal successors, (2965), 18 states have internal predecessors, (2965), 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) [2023-08-26 10:50:24,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 478.0) internal successors, (9082), 19 states have internal predecessors, (9082), 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) [2023-08-26 10:50:24,722 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 478.0) internal successors, (9082), 19 states have internal predecessors, (9082), 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) [2023-08-26 10:50:24,722 INFO L175 Difference]: Start difference. First operand has 286 places, 493 transitions, 6650 flow. Second operand 18 states and 2965 transitions. [2023-08-26 10:50:24,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 241 transitions, 3873 flow [2023-08-26 10:50:24,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 241 transitions, 3318 flow, removed 135 selfloop flow, removed 45 redundant places. [2023-08-26 10:50:24,773 INFO L231 Difference]: Finished difference. Result has 215 places, 187 transitions, 2431 flow [2023-08-26 10:50:24,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2431, PETRI_PLACES=215, PETRI_TRANSITIONS=187} [2023-08-26 10:50:24,774 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 144 predicate places. [2023-08-26 10:50:24,774 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 187 transitions, 2431 flow [2023-08-26 10:50:24,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 162.74074074074073) internal successors, (4394), 27 states have internal predecessors, (4394), 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) [2023-08-26 10:50:24,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:50:24,775 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:50:24,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-26 10:50:24,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 10:50:24,976 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:50:24,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:50:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1172233554, now seen corresponding path program 19 times [2023-08-26 10:50:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:50:24,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178433791] [2023-08-26 10:50:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:50:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:50:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:26,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:50:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178433791] [2023-08-26 10:50:26,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178433791] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:50:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501459998] [2023-08-26 10:50:26,526 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:50:26,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:50:26,527 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:50:26,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-26 10:50:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:26,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-26 10:50:26,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:50:27,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:27,498 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:27,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 62 [2023-08-26 10:50:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:50:27,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501459998] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:27,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:27,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 7] total 28 [2023-08-26 10:50:27,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217140003] [2023-08-26 10:50:27,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:27,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-26 10:50:27,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:27,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-26 10:50:27,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-08-26 10:50:27,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-26 10:50:27,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 187 transitions, 2431 flow. Second operand has 30 states, 30 states have (on average 140.76666666666668) internal successors, (4223), 30 states have internal predecessors, (4223), 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) [2023-08-26 10:50:27,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:27,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-26 10:50:27,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:50:29,256 INFO L124 PetriNetUnfolderBase]: 461/1185 cut-off events. [2023-08-26 10:50:29,256 INFO L125 PetriNetUnfolderBase]: For 6929/6974 co-relation queries the response was YES. [2023-08-26 10:50:29,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6384 conditions, 1185 events. 461/1185 cut-off events. For 6929/6974 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7665 event pairs, 68 based on Foata normal form. 24/1199 useless extension candidates. Maximal degree in co-relation 6310. Up to 673 conditions per place. [2023-08-26 10:50:29,265 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 182 selfloop transitions, 67 changer transitions 6/264 dead transitions. [2023-08-26 10:50:29,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 264 transitions, 3474 flow [2023-08-26 10:50:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 10:50:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 10:50:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3871 transitions. [2023-08-26 10:50:29,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29993801332713466 [2023-08-26 10:50:29,270 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3871 transitions. [2023-08-26 10:50:29,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3871 transitions. [2023-08-26 10:50:29,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:50:29,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3871 transitions. [2023-08-26 10:50:29,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 143.37037037037038) internal successors, (3871), 27 states have internal predecessors, (3871), 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) [2023-08-26 10:50:29,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 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) [2023-08-26 10:50:29,282 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 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) [2023-08-26 10:50:29,282 INFO L175 Difference]: Start difference. First operand has 215 places, 187 transitions, 2431 flow. Second operand 27 states and 3871 transitions. [2023-08-26 10:50:29,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 264 transitions, 3474 flow [2023-08-26 10:50:29,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 264 transitions, 3341 flow, removed 9 selfloop flow, removed 18 redundant places. [2023-08-26 10:50:29,324 INFO L231 Difference]: Finished difference. Result has 185 places, 208 transitions, 2824 flow [2023-08-26 10:50:29,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2824, PETRI_PLACES=185, PETRI_TRANSITIONS=208} [2023-08-26 10:50:29,325 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 114 predicate places. [2023-08-26 10:50:29,325 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 208 transitions, 2824 flow [2023-08-26 10:50:29,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 140.76666666666668) internal successors, (4223), 30 states have internal predecessors, (4223), 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) [2023-08-26 10:50:29,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:50:29,326 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:50:29,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-26 10:50:29,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:29,532 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:50:29,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:50:29,533 INFO L85 PathProgramCache]: Analyzing trace with hash 549575274, now seen corresponding path program 20 times [2023-08-26 10:50:29,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:50:29,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680453593] [2023-08-26 10:50:29,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:50:29,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:50:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:31,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:50:31,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680453593] [2023-08-26 10:50:31,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680453593] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:50:31,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219034604] [2023-08-26 10:50:31,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:50:31,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:31,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:50:31,292 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:50:31,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-26 10:50:31,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:50:31,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:50:31,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-26 10:50:31,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:32,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:50:32,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-08-26 10:50:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:50:32,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:32,952 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:32,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 259 treesize of output 210 [2023-08-26 10:50:32,962 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:32,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 139 [2023-08-26 10:50:32,970 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:32,970 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 113 [2023-08-26 10:50:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:50:33,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219034604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:33,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:33,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 33 [2023-08-26 10:50:33,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037559704] [2023-08-26 10:50:33,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:33,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-26 10:50:33,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:33,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-26 10:50:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1089, Unknown=1, NotChecked=0, Total=1190 [2023-08-26 10:50:33,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-26 10:50:33,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 208 transitions, 2824 flow. Second operand has 35 states, 35 states have (on average 130.82857142857142) internal successors, (4579), 35 states have internal predecessors, (4579), 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) [2023-08-26 10:50:33,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:33,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-26 10:50:33,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:50:35,784 INFO L124 PetriNetUnfolderBase]: 734/1573 cut-off events. [2023-08-26 10:50:35,785 INFO L125 PetriNetUnfolderBase]: For 11763/11844 co-relation queries the response was YES. [2023-08-26 10:50:35,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9353 conditions, 1573 events. 734/1573 cut-off events. For 11763/11844 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9601 event pairs, 88 based on Foata normal form. 30/1592 useless extension candidates. Maximal degree in co-relation 9281. Up to 891 conditions per place. [2023-08-26 10:50:35,802 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 193 selfloop transitions, 104 changer transitions 4/306 dead transitions. [2023-08-26 10:50:35,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 306 transitions, 3887 flow [2023-08-26 10:50:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 10:50:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 10:50:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3371 transitions. [2023-08-26 10:50:35,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.282092050209205 [2023-08-26 10:50:35,806 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3371 transitions. [2023-08-26 10:50:35,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3371 transitions. [2023-08-26 10:50:35,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:50:35,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3371 transitions. [2023-08-26 10:50:35,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 134.84) internal successors, (3371), 25 states have internal predecessors, (3371), 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) [2023-08-26 10:50:35,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 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) [2023-08-26 10:50:35,816 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 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) [2023-08-26 10:50:35,816 INFO L175 Difference]: Start difference. First operand has 185 places, 208 transitions, 2824 flow. Second operand 25 states and 3371 transitions. [2023-08-26 10:50:35,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 306 transitions, 3887 flow [2023-08-26 10:50:35,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 306 transitions, 3821 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-26 10:50:35,858 INFO L231 Difference]: Finished difference. Result has 202 places, 223 transitions, 3227 flow [2023-08-26 10:50:35,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3227, PETRI_PLACES=202, PETRI_TRANSITIONS=223} [2023-08-26 10:50:35,858 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 131 predicate places. [2023-08-26 10:50:35,858 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 223 transitions, 3227 flow [2023-08-26 10:50:35,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 130.82857142857142) internal successors, (4579), 35 states have internal predecessors, (4579), 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) [2023-08-26 10:50:35,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:50:35,859 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:50:35,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-26 10:50:36,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-26 10:50:36,060 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:50:36,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:50:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash 823018934, now seen corresponding path program 21 times [2023-08-26 10:50:36,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:50:36,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157674397] [2023-08-26 10:50:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:50:36,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:50:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:37,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:50:37,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157674397] [2023-08-26 10:50:37,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157674397] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:50:37,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641187789] [2023-08-26 10:50:37,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:50:37,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:37,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:50:37,695 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:50:37,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-26 10:50:38,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:50:38,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:50:38,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-26 10:50:38,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:38,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:50:38,542 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-08-26 10:50:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:50:38,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:39,166 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:39,166 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 139 treesize of output 124 [2023-08-26 10:50:39,177 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:39,178 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 66 [2023-08-26 10:50:39,186 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:50:39,187 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2023-08-26 10:50:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:50:39,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641187789] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:39,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:39,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 31 [2023-08-26 10:50:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897192192] [2023-08-26 10:50:39,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:39,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-26 10:50:39,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:39,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-26 10:50:39,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=957, Unknown=10, NotChecked=0, Total=1056 [2023-08-26 10:50:39,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-26 10:50:39,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 223 transitions, 3227 flow. Second operand has 33 states, 33 states have (on average 130.87878787878788) internal successors, (4319), 33 states have internal predecessors, (4319), 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) [2023-08-26 10:50:39,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:39,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-26 10:50:39,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:50:41,885 INFO L124 PetriNetUnfolderBase]: 776/1679 cut-off events. [2023-08-26 10:50:41,885 INFO L125 PetriNetUnfolderBase]: For 13501/13550 co-relation queries the response was YES. [2023-08-26 10:50:41,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10222 conditions, 1679 events. 776/1679 cut-off events. For 13501/13550 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10544 event pairs, 65 based on Foata normal form. 29/1699 useless extension candidates. Maximal degree in co-relation 10147. Up to 876 conditions per place. [2023-08-26 10:50:41,932 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 186 selfloop transitions, 108 changer transitions 4/303 dead transitions. [2023-08-26 10:50:41,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 303 transitions, 4086 flow [2023-08-26 10:50:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 10:50:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 10:50:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3364 transitions. [2023-08-26 10:50:41,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2815062761506276 [2023-08-26 10:50:41,935 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3364 transitions. [2023-08-26 10:50:41,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3364 transitions. [2023-08-26 10:50:41,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:50:41,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3364 transitions. [2023-08-26 10:50:41,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 134.56) internal successors, (3364), 25 states have internal predecessors, (3364), 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) [2023-08-26 10:50:41,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 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) [2023-08-26 10:50:41,944 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 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) [2023-08-26 10:50:41,944 INFO L175 Difference]: Start difference. First operand has 202 places, 223 transitions, 3227 flow. Second operand 25 states and 3364 transitions. [2023-08-26 10:50:41,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 303 transitions, 4086 flow [2023-08-26 10:50:41,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 303 transitions, 3955 flow, removed 2 selfloop flow, removed 17 redundant places. [2023-08-26 10:50:41,989 INFO L231 Difference]: Finished difference. Result has 211 places, 227 transitions, 3394 flow [2023-08-26 10:50:41,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3394, PETRI_PLACES=211, PETRI_TRANSITIONS=227} [2023-08-26 10:50:41,990 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 140 predicate places. [2023-08-26 10:50:41,990 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 227 transitions, 3394 flow [2023-08-26 10:50:41,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 130.87878787878788) internal successors, (4319), 33 states have internal predecessors, (4319), 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) [2023-08-26 10:50:41,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:50:41,991 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:50:41,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-26 10:50:42,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:42,191 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:50:42,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:50:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash -864874395, now seen corresponding path program 22 times [2023-08-26 10:50:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:50:42,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168354694] [2023-08-26 10:50:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:50:42,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:50:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:50:42,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:50:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168354694] [2023-08-26 10:50:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168354694] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:50:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888577696] [2023-08-26 10:50:42,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:50:42,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:50:42,279 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:50:42,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-26 10:50:46,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:50:46,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:50:46,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:50:46,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:50:46,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:50:47,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888577696] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:47,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:47,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-26 10:50:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638863781] [2023-08-26 10:50:47,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:47,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:50:47,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:50:47,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:50:47,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 478 [2023-08-26 10:50:47,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 227 transitions, 3394 flow. Second operand has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-26 10:50:47,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:47,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 478 [2023-08-26 10:50:47,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:50:47,391 INFO L124 PetriNetUnfolderBase]: 658/1618 cut-off events. [2023-08-26 10:50:47,391 INFO L125 PetriNetUnfolderBase]: For 9634/9725 co-relation queries the response was YES. [2023-08-26 10:50:47,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9101 conditions, 1618 events. 658/1618 cut-off events. For 9634/9725 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11270 event pairs, 38 based on Foata normal form. 51/1650 useless extension candidates. Maximal degree in co-relation 9025. Up to 327 conditions per place. [2023-08-26 10:50:47,403 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 84 selfloop transitions, 147 changer transitions 43/289 dead transitions. [2023-08-26 10:50:47,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 289 transitions, 4461 flow [2023-08-26 10:50:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:50:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:50:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1151 transitions. [2023-08-26 10:50:47,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013249651324965 [2023-08-26 10:50:47,405 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1151 transitions. [2023-08-26 10:50:47,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1151 transitions. [2023-08-26 10:50:47,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:50:47,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1151 transitions. [2023-08-26 10:50:47,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 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) [2023-08-26 10:50:47,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:50:47,408 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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) [2023-08-26 10:50:47,408 INFO L175 Difference]: Start difference. First operand has 211 places, 227 transitions, 3394 flow. Second operand 6 states and 1151 transitions. [2023-08-26 10:50:47,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 289 transitions, 4461 flow [2023-08-26 10:50:47,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 289 transitions, 4301 flow, removed 3 selfloop flow, removed 19 redundant places. [2023-08-26 10:50:47,449 INFO L231 Difference]: Finished difference. Result has 198 places, 220 transitions, 3229 flow [2023-08-26 10:50:47,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3229, PETRI_PLACES=198, PETRI_TRANSITIONS=220} [2023-08-26 10:50:47,450 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 127 predicate places. [2023-08-26 10:50:47,450 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 220 transitions, 3229 flow [2023-08-26 10:50:47,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-26 10:50:47,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:50:47,450 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:50:47,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-26 10:50:47,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:47,651 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:50:47,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:50:47,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2081243025, now seen corresponding path program 23 times [2023-08-26 10:50:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:50:47,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417105893] [2023-08-26 10:50:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:50:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:50:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:48,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:50:48,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417105893] [2023-08-26 10:50:48,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417105893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:50:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41548885] [2023-08-26 10:50:48,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:50:48,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:48,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:50:48,341 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:50:48,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-26 10:50:50,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:50:50,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:50:50,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-26 10:50:50,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:50,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:51,133 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-26 10:50:51,133 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-26 10:50:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:51,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41548885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:51,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:51,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-26 10:50:51,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487970408] [2023-08-26 10:50:51,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:51,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-26 10:50:51,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:51,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-26 10:50:51,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1201, Unknown=0, NotChecked=0, Total=1406 [2023-08-26 10:50:51,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-26 10:50:51,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 220 transitions, 3229 flow. Second operand has 38 states, 38 states have (on average 152.5) internal successors, (5795), 38 states have internal predecessors, (5795), 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) [2023-08-26 10:50:51,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:51,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-26 10:50:51,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:50:56,236 INFO L124 PetriNetUnfolderBase]: 1488/3434 cut-off events. [2023-08-26 10:50:56,236 INFO L125 PetriNetUnfolderBase]: For 16166/16439 co-relation queries the response was YES. [2023-08-26 10:50:56,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19250 conditions, 3434 events. 1488/3434 cut-off events. For 16166/16439 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 26411 event pairs, 203 based on Foata normal form. 184/3563 useless extension candidates. Maximal degree in co-relation 19174. Up to 1133 conditions per place. [2023-08-26 10:50:56,268 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 350 selfloop transitions, 303 changer transitions 1/669 dead transitions. [2023-08-26 10:50:56,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 669 transitions, 9290 flow [2023-08-26 10:50:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-26 10:50:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-26 10:50:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6937 transitions. [2023-08-26 10:50:56,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32983073411943703 [2023-08-26 10:50:56,273 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6937 transitions. [2023-08-26 10:50:56,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6937 transitions. [2023-08-26 10:50:56,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:50:56,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6937 transitions. [2023-08-26 10:50:56,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 157.6590909090909) internal successors, (6937), 44 states have internal predecessors, (6937), 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) [2023-08-26 10:50:56,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 478.0) internal successors, (21510), 45 states have internal predecessors, (21510), 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) [2023-08-26 10:50:56,293 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 478.0) internal successors, (21510), 45 states have internal predecessors, (21510), 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) [2023-08-26 10:50:56,293 INFO L175 Difference]: Start difference. First operand has 198 places, 220 transitions, 3229 flow. Second operand 44 states and 6937 transitions. [2023-08-26 10:50:56,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 669 transitions, 9290 flow [2023-08-26 10:50:56,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 669 transitions, 8421 flow, removed 392 selfloop flow, removed 11 redundant places. [2023-08-26 10:50:56,399 INFO L231 Difference]: Finished difference. Result has 220 places, 516 transitions, 7789 flow [2023-08-26 10:50:56,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7789, PETRI_PLACES=220, PETRI_TRANSITIONS=516} [2023-08-26 10:50:56,399 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 149 predicate places. [2023-08-26 10:50:56,399 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 516 transitions, 7789 flow [2023-08-26 10:50:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 152.5) internal successors, (5795), 38 states have internal predecessors, (5795), 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) [2023-08-26 10:50:56,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:50:56,400 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:50:56,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-26 10:50:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:56,601 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:50:56,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:50:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash -448128355, now seen corresponding path program 24 times [2023-08-26 10:50:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:50:56,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041531646] [2023-08-26 10:50:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:50:56,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:50:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:50:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:57,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:50:57,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041531646] [2023-08-26 10:50:57,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041531646] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:50:57,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963109533] [2023-08-26 10:50:57,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:50:57,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:50:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:50:57,164 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:50:57,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-26 10:50:58,275 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:50:58,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:50:58,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-26 10:50:58,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:50:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:58,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:50:58,971 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-26 10:50:58,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-26 10:50:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:50:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963109533] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:50:59,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:50:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-26 10:50:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180638735] [2023-08-26 10:50:59,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:50:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-26 10:50:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:50:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-26 10:50:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2023-08-26 10:50:59,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-26 10:50:59,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 516 transitions, 7789 flow. Second operand has 38 states, 38 states have (on average 152.55263157894737) internal successors, (5797), 38 states have internal predecessors, (5797), 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) [2023-08-26 10:50:59,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:50:59,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-26 10:50:59,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:51:04,455 INFO L124 PetriNetUnfolderBase]: 2888/6938 cut-off events. [2023-08-26 10:51:04,455 INFO L125 PetriNetUnfolderBase]: For 28810/29180 co-relation queries the response was YES. [2023-08-26 10:51:04,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39229 conditions, 6938 events. 2888/6938 cut-off events. For 28810/29180 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 62823 event pairs, 231 based on Foata normal form. 462/7378 useless extension candidates. Maximal degree in co-relation 39151. Up to 2615 conditions per place. [2023-08-26 10:51:04,524 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 418 selfloop transitions, 695 changer transitions 10/1138 dead transitions. [2023-08-26 10:51:04,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1138 transitions, 18061 flow [2023-08-26 10:51:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-26 10:51:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-26 10:51:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5693 transitions. [2023-08-26 10:51:04,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3308344955834496 [2023-08-26 10:51:04,529 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5693 transitions. [2023-08-26 10:51:04,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5693 transitions. [2023-08-26 10:51:04,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:51:04,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5693 transitions. [2023-08-26 10:51:04,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 158.13888888888889) internal successors, (5693), 36 states have internal predecessors, (5693), 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) [2023-08-26 10:51:04,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 478.0) internal successors, (17686), 37 states have internal predecessors, (17686), 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) [2023-08-26 10:51:04,546 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 478.0) internal successors, (17686), 37 states have internal predecessors, (17686), 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) [2023-08-26 10:51:04,546 INFO L175 Difference]: Start difference. First operand has 220 places, 516 transitions, 7789 flow. Second operand 36 states and 5693 transitions. [2023-08-26 10:51:04,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1138 transitions, 18061 flow [2023-08-26 10:51:04,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1138 transitions, 15301 flow, removed 1366 selfloop flow, removed 8 redundant places. [2023-08-26 10:51:04,835 INFO L231 Difference]: Finished difference. Result has 258 places, 954 transitions, 13934 flow [2023-08-26 10:51:04,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6669, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=13934, PETRI_PLACES=258, PETRI_TRANSITIONS=954} [2023-08-26 10:51:04,836 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 187 predicate places. [2023-08-26 10:51:04,837 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 954 transitions, 13934 flow [2023-08-26 10:51:04,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 152.55263157894737) internal successors, (5797), 38 states have internal predecessors, (5797), 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) [2023-08-26 10:51:04,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:51:04,838 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:51:04,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-26 10:51:05,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-26 10:51:05,047 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:51:05,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:51:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash 68766827, now seen corresponding path program 25 times [2023-08-26 10:51:05,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:51:05,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943870489] [2023-08-26 10:51:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:51:05,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:51:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:51:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:51:05,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:51:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943870489] [2023-08-26 10:51:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943870489] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:51:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888543585] [2023-08-26 10:51:05,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:51:05,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:51:05,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:51:05,922 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:51:05,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-26 10:51:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:51:06,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-26 10:51:06,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:51:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:51:06,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:51:06,914 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-26 10:51:06,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-26 10:51:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:51:07,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888543585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:51:07,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:51:07,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 38 [2023-08-26 10:51:07,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010645110] [2023-08-26 10:51:07,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:51:07,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-26 10:51:07,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:51:07,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-26 10:51:07,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2023-08-26 10:51:07,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 478 [2023-08-26 10:51:07,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 954 transitions, 13934 flow. Second operand has 39 states, 39 states have (on average 134.12820512820514) internal successors, (5231), 39 states have internal predecessors, (5231), 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) [2023-08-26 10:51:07,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:51:07,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 478 [2023-08-26 10:51:07,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:51:19,411 INFO L124 PetriNetUnfolderBase]: 13862/24423 cut-off events. [2023-08-26 10:51:19,411 INFO L125 PetriNetUnfolderBase]: For 120047/120062 co-relation queries the response was YES. [2023-08-26 10:51:19,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148545 conditions, 24423 events. 13862/24423 cut-off events. For 120047/120062 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 196535 event pairs, 910 based on Foata normal form. 1527/24995 useless extension candidates. Maximal degree in co-relation 148455. Up to 10727 conditions per place. [2023-08-26 10:51:19,843 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 691 selfloop transitions, 1083 changer transitions 38/1819 dead transitions. [2023-08-26 10:51:19,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1819 transitions, 25614 flow [2023-08-26 10:51:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-26 10:51:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-26 10:51:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6087 transitions. [2023-08-26 10:51:19,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3031978481769277 [2023-08-26 10:51:19,849 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6087 transitions. [2023-08-26 10:51:19,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6087 transitions. [2023-08-26 10:51:19,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:51:19,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6087 transitions. [2023-08-26 10:51:19,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 144.92857142857142) internal successors, (6087), 42 states have internal predecessors, (6087), 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) [2023-08-26 10:51:19,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 478.0) internal successors, (20554), 43 states have internal predecessors, (20554), 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) [2023-08-26 10:51:19,868 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 478.0) internal successors, (20554), 43 states have internal predecessors, (20554), 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) [2023-08-26 10:51:19,868 INFO L175 Difference]: Start difference. First operand has 258 places, 954 transitions, 13934 flow. Second operand 42 states and 6087 transitions. [2023-08-26 10:51:19,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 1819 transitions, 25614 flow [2023-08-26 10:51:22,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1819 transitions, 23271 flow, removed 1165 selfloop flow, removed 6 redundant places. [2023-08-26 10:51:22,284 INFO L231 Difference]: Finished difference. Result has 291 places, 1340 transitions, 19948 flow [2023-08-26 10:51:22,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=11249, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=19948, PETRI_PLACES=291, PETRI_TRANSITIONS=1340} [2023-08-26 10:51:22,285 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 220 predicate places. [2023-08-26 10:51:22,285 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 1340 transitions, 19948 flow [2023-08-26 10:51:22,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 134.12820512820514) internal successors, (5231), 39 states have internal predecessors, (5231), 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) [2023-08-26 10:51:22,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:51:22,286 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:51:22,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-26 10:51:22,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-26 10:51:22,495 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:51:22,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:51:22,495 INFO L85 PathProgramCache]: Analyzing trace with hash -885645595, now seen corresponding path program 26 times [2023-08-26 10:51:22,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:51:22,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047401317] [2023-08-26 10:51:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:51:22,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:51:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:51:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:51:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:51:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047401317] [2023-08-26 10:51:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047401317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:51:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430728753] [2023-08-26 10:51:23,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:51:23,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:51:23,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:51:23,314 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:51:23,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-26 10:51:23,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:51:23,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:51:23,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 10:51:23,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:51:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:51:24,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:51:24,192 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-26 10:51:24,192 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-26 10:51:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:51:24,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430728753] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:51:24,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:51:24,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 36 [2023-08-26 10:51:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948174786] [2023-08-26 10:51:24,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:51:24,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-26 10:51:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:51:24,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-26 10:51:24,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1069, Unknown=0, NotChecked=0, Total=1332 [2023-08-26 10:51:24,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-26 10:51:24,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1340 transitions, 19948 flow. Second operand has 37 states, 37 states have (on average 152.48648648648648) internal successors, (5642), 37 states have internal predecessors, (5642), 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) [2023-08-26 10:51:24,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:51:24,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-26 10:51:24,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:51:32,669 INFO L124 PetriNetUnfolderBase]: 5367/12877 cut-off events. [2023-08-26 10:51:32,669 INFO L125 PetriNetUnfolderBase]: For 48863/49761 co-relation queries the response was YES. [2023-08-26 10:51:32,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72490 conditions, 12877 events. 5367/12877 cut-off events. For 48863/49761 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 130909 event pairs, 437 based on Foata normal form. 834/13272 useless extension candidates. Maximal degree in co-relation 72397. Up to 3817 conditions per place. [2023-08-26 10:51:32,792 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 775 selfloop transitions, 1209 changer transitions 293/2292 dead transitions. [2023-08-26 10:51:32,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 2292 transitions, 37426 flow [2023-08-26 10:51:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-08-26 10:51:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-08-26 10:51:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 8965 transitions. [2023-08-26 10:51:32,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903912500917565 [2023-08-26 10:51:32,798 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 8965 transitions. [2023-08-26 10:51:32,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 8965 transitions. [2023-08-26 10:51:32,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:51:32,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 8965 transitions. [2023-08-26 10:51:32,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 157.28070175438597) internal successors, (8965), 57 states have internal predecessors, (8965), 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) [2023-08-26 10:51:32,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 478.0) internal successors, (27724), 58 states have internal predecessors, (27724), 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) [2023-08-26 10:51:32,818 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 478.0) internal successors, (27724), 58 states have internal predecessors, (27724), 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) [2023-08-26 10:51:32,819 INFO L175 Difference]: Start difference. First operand has 291 places, 1340 transitions, 19948 flow. Second operand 57 states and 8965 transitions. [2023-08-26 10:51:32,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 2292 transitions, 37426 flow [2023-08-26 10:51:33,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 2292 transitions, 34240 flow, removed 1535 selfloop flow, removed 10 redundant places. [2023-08-26 10:51:33,850 INFO L231 Difference]: Finished difference. Result has 346 places, 1731 transitions, 28758 flow [2023-08-26 10:51:33,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=17497, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=28758, PETRI_PLACES=346, PETRI_TRANSITIONS=1731} [2023-08-26 10:51:33,852 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 275 predicate places. [2023-08-26 10:51:33,852 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 1731 transitions, 28758 flow [2023-08-26 10:51:33,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 152.48648648648648) internal successors, (5642), 37 states have internal predecessors, (5642), 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) [2023-08-26 10:51:33,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:51:33,853 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:51:33,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-26 10:51:34,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:51:34,060 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:51:34,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:51:34,061 INFO L85 PathProgramCache]: Analyzing trace with hash 696503775, now seen corresponding path program 27 times [2023-08-26 10:51:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:51:34,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384658432] [2023-08-26 10:51:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:51:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:51:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:51:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:51:34,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:51:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384658432] [2023-08-26 10:51:34,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384658432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:51:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114484595] [2023-08-26 10:51:34,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:51:34,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:51:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:51:34,601 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:51:34,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-26 10:51:36,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:51:36,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:51:36,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 10:51:36,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:51:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:51:37,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:51:37,664 INFO L322 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2023-08-26 10:51:37,665 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 21 [2023-08-26 10:51:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:51:37,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114484595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:51:37,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:51:37,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2023-08-26 10:51:37,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747791131] [2023-08-26 10:51:37,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:51:37,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-26 10:51:37,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:51:37,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-26 10:51:37,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1030, Unknown=1, NotChecked=0, Total=1260 [2023-08-26 10:51:37,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-26 10:51:37,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 1731 transitions, 28758 flow. Second operand has 36 states, 36 states have (on average 152.63888888888889) internal successors, (5495), 36 states have internal predecessors, (5495), 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) [2023-08-26 10:51:37,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:51:37,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-26 10:51:37,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:51:45,594 INFO L124 PetriNetUnfolderBase]: 4977/12568 cut-off events. [2023-08-26 10:51:45,594 INFO L125 PetriNetUnfolderBase]: For 67949/68642 co-relation queries the response was YES. [2023-08-26 10:51:45,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72748 conditions, 12568 events. 4977/12568 cut-off events. For 67949/68642 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 131216 event pairs, 624 based on Foata normal form. 249/12512 useless extension candidates. Maximal degree in co-relation 72645. Up to 3531 conditions per place. [2023-08-26 10:51:45,717 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 842 selfloop transitions, 1401 changer transitions 19/2277 dead transitions. [2023-08-26 10:51:45,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 2277 transitions, 41729 flow [2023-08-26 10:51:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-26 10:51:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-26 10:51:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6200 transitions. [2023-08-26 10:51:45,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32426778242677823 [2023-08-26 10:51:45,721 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6200 transitions. [2023-08-26 10:51:45,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6200 transitions. [2023-08-26 10:51:45,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:51:45,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6200 transitions. [2023-08-26 10:51:45,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 155.0) internal successors, (6200), 40 states have internal predecessors, (6200), 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) [2023-08-26 10:51:45,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 478.0) internal successors, (19598), 41 states have internal predecessors, (19598), 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) [2023-08-26 10:51:45,733 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 478.0) internal successors, (19598), 41 states have internal predecessors, (19598), 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) [2023-08-26 10:51:45,734 INFO L175 Difference]: Start difference. First operand has 346 places, 1731 transitions, 28758 flow. Second operand 40 states and 6200 transitions. [2023-08-26 10:51:45,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 2277 transitions, 41729 flow [2023-08-26 10:51:46,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 2277 transitions, 39454 flow, removed 837 selfloop flow, removed 12 redundant places. [2023-08-26 10:51:46,917 INFO L231 Difference]: Finished difference. Result has 379 places, 2112 transitions, 38190 flow [2023-08-26 10:51:46,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=26391, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=38190, PETRI_PLACES=379, PETRI_TRANSITIONS=2112} [2023-08-26 10:51:46,919 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 308 predicate places. [2023-08-26 10:51:46,919 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 2112 transitions, 38190 flow [2023-08-26 10:51:46,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 152.63888888888889) internal successors, (5495), 36 states have internal predecessors, (5495), 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) [2023-08-26 10:51:46,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:51:46,920 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:51:46,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-08-26 10:51:47,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-26 10:51:47,120 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:51:47,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:51:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1249932657, now seen corresponding path program 28 times [2023-08-26 10:51:47,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:51:47,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187433426] [2023-08-26 10:51:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:51:47,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:51:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:51:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:51:47,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:51:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187433426] [2023-08-26 10:51:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187433426] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:51:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290713130] [2023-08-26 10:51:47,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:51:47,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:51:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:51:47,777 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:51:47,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-26 10:51:56,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:51:56,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:51:56,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-26 10:51:56,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:51:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-26 10:51:56,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:51:56,381 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-26 10:51:56,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-08-26 10:51:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-26 10:51:56,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290713130] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:51:56,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:51:56,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2023-08-26 10:51:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221586620] [2023-08-26 10:51:56,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:51:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 10:51:56,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:51:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 10:51:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-08-26 10:51:56,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-26 10:51:56,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 2112 transitions, 38190 flow. Second operand has 21 states, 21 states have (on average 152.95238095238096) internal successors, (3212), 21 states have internal predecessors, (3212), 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) [2023-08-26 10:51:56,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:51:56,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-26 10:51:56,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:52:03,549 INFO L124 PetriNetUnfolderBase]: 4921/12288 cut-off events. [2023-08-26 10:52:03,549 INFO L125 PetriNetUnfolderBase]: For 70836/71291 co-relation queries the response was YES. [2023-08-26 10:52:03,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74999 conditions, 12288 events. 4921/12288 cut-off events. For 70836/71291 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 126747 event pairs, 580 based on Foata normal form. 186/12395 useless extension candidates. Maximal degree in co-relation 74886. Up to 8296 conditions per place. [2023-08-26 10:52:03,694 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 1840 selfloop transitions, 390 changer transitions 2/2247 dead transitions. [2023-08-26 10:52:03,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 2247 transitions, 43481 flow [2023-08-26 10:52:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-26 10:52:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-26 10:52:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6246 transitions. [2023-08-26 10:52:03,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.326673640167364 [2023-08-26 10:52:03,699 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6246 transitions. [2023-08-26 10:52:03,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6246 transitions. [2023-08-26 10:52:03,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:52:03,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6246 transitions. [2023-08-26 10:52:03,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 156.15) internal successors, (6246), 40 states have internal predecessors, (6246), 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) [2023-08-26 10:52:03,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 478.0) internal successors, (19598), 41 states have internal predecessors, (19598), 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) [2023-08-26 10:52:03,711 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 478.0) internal successors, (19598), 41 states have internal predecessors, (19598), 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) [2023-08-26 10:52:03,711 INFO L175 Difference]: Start difference. First operand has 379 places, 2112 transitions, 38190 flow. Second operand 40 states and 6246 transitions. [2023-08-26 10:52:03,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 2247 transitions, 43481 flow [2023-08-26 10:52:05,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 2247 transitions, 42092 flow, removed 573 selfloop flow, removed 16 redundant places. [2023-08-26 10:52:05,246 INFO L231 Difference]: Finished difference. Result has 405 places, 2118 transitions, 37870 flow [2023-08-26 10:52:05,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=36626, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=37870, PETRI_PLACES=405, PETRI_TRANSITIONS=2118} [2023-08-26 10:52:05,248 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 334 predicate places. [2023-08-26 10:52:05,248 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 2118 transitions, 37870 flow [2023-08-26 10:52:05,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 152.95238095238096) internal successors, (3212), 21 states have internal predecessors, (3212), 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) [2023-08-26 10:52:05,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:52:05,248 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:52:05,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-08-26 10:52:05,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-26 10:52:05,449 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:52:05,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:52:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash -514643771, now seen corresponding path program 29 times [2023-08-26 10:52:05,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:52:05,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511194107] [2023-08-26 10:52:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:52:05,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:52:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:52:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:52:06,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:52:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511194107] [2023-08-26 10:52:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511194107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:52:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998495957] [2023-08-26 10:52:06,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:52:06,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:52:06,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:52:06,186 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:52:06,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-26 10:52:10,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:52:10,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:52:10,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 10:52:10,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:52:10,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:52:10,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 10:52:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:52:10,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:52:10,737 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5568 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5568) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 8)) 0))) is different from false [2023-08-26 10:52:10,748 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:52:10,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 40 [2023-08-26 10:52:10,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-26 10:52:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 3 not checked. [2023-08-26 10:52:10,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998495957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:52:10,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:52:10,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 31 [2023-08-26 10:52:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064361131] [2023-08-26 10:52:10,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:52:10,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 10:52:10,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:52:10,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 10:52:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=839, Unknown=1, NotChecked=58, Total=992 [2023-08-26 10:52:10,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 478 [2023-08-26 10:52:10,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 2118 transitions, 37870 flow. Second operand has 32 states, 32 states have (on average 142.78125) internal successors, (4569), 32 states have internal predecessors, (4569), 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) [2023-08-26 10:52:10,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:52:10,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 478 [2023-08-26 10:52:10,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:52:22,078 INFO L124 PetriNetUnfolderBase]: 8253/17303 cut-off events. [2023-08-26 10:52:22,078 INFO L125 PetriNetUnfolderBase]: For 160784/161123 co-relation queries the response was YES. [2023-08-26 10:52:22,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113092 conditions, 17303 events. 8253/17303 cut-off events. For 160784/161123 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 164416 event pairs, 1331 based on Foata normal form. 113/17353 useless extension candidates. Maximal degree in co-relation 112979. Up to 12318 conditions per place. [2023-08-26 10:52:22,286 INFO L140 encePairwiseOnDemand]: 471/478 looper letters, 1832 selfloop transitions, 690 changer transitions 2/2535 dead transitions. [2023-08-26 10:52:22,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 2535 transitions, 47439 flow [2023-08-26 10:52:22,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-26 10:52:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-26 10:52:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5494 transitions. [2023-08-26 10:52:22,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31064118511817257 [2023-08-26 10:52:22,290 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5494 transitions. [2023-08-26 10:52:22,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5494 transitions. [2023-08-26 10:52:22,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:52:22,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5494 transitions. [2023-08-26 10:52:22,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 148.48648648648648) internal successors, (5494), 37 states have internal predecessors, (5494), 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) [2023-08-26 10:52:22,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 478.0) internal successors, (18164), 38 states have internal predecessors, (18164), 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) [2023-08-26 10:52:22,301 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 478.0) internal successors, (18164), 38 states have internal predecessors, (18164), 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) [2023-08-26 10:52:22,301 INFO L175 Difference]: Start difference. First operand has 405 places, 2118 transitions, 37870 flow. Second operand 37 states and 5494 transitions. [2023-08-26 10:52:22,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 2535 transitions, 47439 flow [2023-08-26 10:52:24,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 2535 transitions, 45951 flow, removed 107 selfloop flow, removed 23 redundant places. [2023-08-26 10:52:24,573 INFO L231 Difference]: Finished difference. Result has 428 places, 2308 transitions, 41954 flow [2023-08-26 10:52:24,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=36343, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=503, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=41954, PETRI_PLACES=428, PETRI_TRANSITIONS=2308} [2023-08-26 10:52:24,575 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 357 predicate places. [2023-08-26 10:52:24,575 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 2308 transitions, 41954 flow [2023-08-26 10:52:24,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 142.78125) internal successors, (4569), 32 states have internal predecessors, (4569), 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) [2023-08-26 10:52:24,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:52:24,576 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:52:24,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-26 10:52:24,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-26 10:52:24,785 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-26 10:52:24,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:52:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash -612081386, now seen corresponding path program 30 times [2023-08-26 10:52:24,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:52:24,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258565203] [2023-08-26 10:52:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:52:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:52:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:52:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:52:26,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:52:26,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258565203] [2023-08-26 10:52:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258565203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:52:26,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752552966] [2023-08-26 10:52:26,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:52:26,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:52:26,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:52:26,150 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:52:26,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-26 10:52:28,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:52:28,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:52:28,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 93 conjunts are in the unsatisfiable core [2023-08-26 10:52:28,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:52:28,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 10:52:28,204 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:52:28,269 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:52:28,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 10:52:28,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:52:28,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:52:28,585 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 10:52:29,158 INFO L322 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2023-08-26 10:52:29,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 25 [2023-08-26 10:52:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:52:29,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:52:44,628 INFO L322 Elim1Store]: treesize reduction 96, result has 44.5 percent of original size [2023-08-26 10:52:44,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 308 treesize of output 180 [2023-08-26 10:52:45,039 INFO L322 Elim1Store]: treesize reduction 18, result has 93.7 percent of original size [2023-08-26 10:52:45,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 388 treesize of output 578 [2023-08-26 10:52:45,068 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:52:45,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:52:45,119 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:52:45,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 241 [2023-08-26 10:52:45,268 INFO L322 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2023-08-26 10:52:45,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 178 treesize of output 223 Received shutdown request... [2023-08-26 10:54:18,348 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-26 10:54:18,351 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONASSERT (73 of 74 remaining) [2023-08-26 10:54:18,356 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 [2023-08-26 10:54:18,357 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 10:54:18,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-26 10:54:18,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:54:18,560 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. [2023-08-26 10:54:18,561 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (72 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONDATA_RACE (71 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONDATA_RACE (70 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONDATA_RACE (69 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err12ASSERT_VIOLATIONDATA_RACE (68 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err13ASSERT_VIOLATIONDATA_RACE (67 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err14ASSERT_VIOLATIONDATA_RACE (66 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err15ASSERT_VIOLATIONDATA_RACE (65 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err16ASSERT_VIOLATIONDATA_RACE (64 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (63 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (62 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (61 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (60 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (59 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (58 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (57 of 74 remaining) [2023-08-26 10:54:18,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONDATA_RACE (56 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (55 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (54 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (53 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (52 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (51 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (50 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (49 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (48 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (47 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONDATA_RACE (46 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONDATA_RACE (45 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err11ASSERT_VIOLATIONDATA_RACE (44 of 74 remaining) [2023-08-26 10:54:18,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (43 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (42 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (41 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (40 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (39 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (38 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (37 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (36 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (35 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (34 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (33 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (32 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (31 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (28 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONDATA_RACE (27 of 74 remaining) [2023-08-26 10:54:18,564 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONDATA_RACE (26 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONDATA_RACE (25 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err12ASSERT_VIOLATIONDATA_RACE (24 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err13ASSERT_VIOLATIONDATA_RACE (23 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err14ASSERT_VIOLATIONDATA_RACE (22 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err15ASSERT_VIOLATIONDATA_RACE (21 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err16ASSERT_VIOLATIONDATA_RACE (20 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (19 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (18 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (17 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (16 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (15 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (14 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (13 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONDATA_RACE (12 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (11 of 74 remaining) [2023-08-26 10:54:18,565 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (10 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (9 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (8 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (7 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (6 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (5 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (4 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (3 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONDATA_RACE (2 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONDATA_RACE (1 of 74 remaining) [2023-08-26 10:54:18,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err11ASSERT_VIOLATIONDATA_RACE (0 of 74 remaining) [2023-08-26 10:54:18,566 INFO L445 BasicCegarLoop]: Path program histogram: [30, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 10:54:18,570 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 10:54:18,570 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 10:54:18,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:54:18 BasicIcfg [2023-08-26 10:54:18,572 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 10:54:18,573 INFO L158 Benchmark]: Toolchain (without parser) took 791459.37ms. Allocated memory was 373.3MB in the beginning and 4.6GB in the end (delta: 4.2GB). Free memory was 349.2MB in the beginning and 624.2MB in the end (delta: -275.0MB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-08-26 10:54:18,573 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 349.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 10:54:18,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.06ms. Allocated memory is still 373.3MB. Free memory was 349.2MB in the beginning and 336.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 10:54:18,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.50ms. Allocated memory is still 373.3MB. Free memory was 336.9MB in the beginning and 334.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 10:54:18,573 INFO L158 Benchmark]: Boogie Preprocessor took 60.15ms. Allocated memory is still 373.3MB. Free memory was 334.0MB in the beginning and 331.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 10:54:18,573 INFO L158 Benchmark]: RCFGBuilder took 986.32ms. Allocated memory is still 373.3MB. Free memory was 331.9MB in the beginning and 313.5MB in the end (delta: 18.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-26 10:54:18,574 INFO L158 Benchmark]: TraceAbstraction took 790134.48ms. Allocated memory was 373.3MB in the beginning and 4.6GB in the end (delta: 4.2GB). Free memory was 312.3MB in the beginning and 624.2MB in the end (delta: -311.9MB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2023-08-26 10:54:18,574 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 349.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.06ms. Allocated memory is still 373.3MB. Free memory was 349.2MB in the beginning and 336.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.50ms. Allocated memory is still 373.3MB. Free memory was 336.9MB in the beginning and 334.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 60.15ms. Allocated memory is still 373.3MB. Free memory was 334.0MB in the beginning and 331.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 986.32ms. Allocated memory is still 373.3MB. Free memory was 331.9MB in the beginning and 313.5MB in the end (delta: 18.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 790134.48ms. Allocated memory was 373.3MB in the beginning and 4.6GB in the end (delta: 4.2GB). Free memory was 312.3MB in the beginning and 624.2MB in the end (delta: -311.9MB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6s, 213 PlacesBefore, 71 PlacesAfterwards, 217 TransitionsBefore, 67 TransitionsAfterwards, 3674 CoEnabledTransitionPairs, 8 FixpointIterations, 149 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 7 ConcurrentYvCompositions, 8 ChoiceCompositions, 250 TotalNumberOfCompositions, 10230 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4221, independent: 3995, independent conditional: 0, independent unconditional: 3995, dependent: 226, dependent conditional: 0, dependent unconditional: 226, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1536, independent: 1470, independent conditional: 0, independent unconditional: 1470, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4221, independent: 2525, independent conditional: 0, independent unconditional: 2525, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 1536, unknown conditional: 0, unknown unconditional: 1536] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 276 locations, 74 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 790.0s, OverallIterations: 41, TraceHistogramMax: 6, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 285.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.7s, HoareTripleCheckerStatistics: 250 mSolverCounterUnknown, 8079 SdHoareTripleChecker+Valid, 85.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8079 mSDsluCounter, 5487 SdHoareTripleChecker+Invalid, 81.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 604 IncrementalHoareTripleChecker+Unchecked, 5118 mSDsCounter, 2065 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33953 IncrementalHoareTripleChecker+Invalid, 36872 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2065 mSolverCounterUnsat, 369 mSDtfsCounter, 33953 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2983 GetRequests, 1359 SyntacticMatches, 32 SemanticMatches, 1592 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 17330 ImplicationChecksByTransitivity, 172.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41954occurred in iteration=40, InterpolantAutomatonStates: 961, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 34.7s SatisfiabilityAnalysisTime, 333.2s InterpolantComputationTime, 2055 NumberOfCodeBlocks, 2050 NumberOfCodeBlocksAsserted, 115 NumberOfCheckSat, 2914 ConstructedInterpolants, 203 QuantifiedInterpolants, 57450 SizeOfPredicates, 479 NumberOfNonLiveVariables, 15121 ConjunctsInSsa, 1346 ConjunctsInUnsatCore, 109 InterpolantComputations, 6 PerfectInterpolantSequences, 344/1233 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown