/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/parallel-barrier-loop.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 09:11:27,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 09:11:27,596 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 09:11:27,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 09:11:27,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 09:11:27,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 09:11:27,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 09:11:27,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 09:11:27,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 09:11:27,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 09:11:27,636 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 09:11:27,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 09:11:27,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 09:11:27,638 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 09:11:27,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 09:11:27,638 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 09:11:27,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 09:11:27,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 09:11:27,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 09:11:27,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 09:11:27,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 09:11:27,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 09:11:27,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 09:11:27,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 09:11:27,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 09:11:27,641 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 09:11:27,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 09:11:27,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:11:27,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 09:11:27,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 09:11:27,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 09:11:27,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 09:11:27,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 09:11:27,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 09:11:27,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 09:11:27,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 09:11:27,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 09:11:27,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 09:11:27,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 09:11:27,942 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 09:11:27,943 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 09:11:27,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier-loop.wvr.c [2023-08-26 09:11:29,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 09:11:29,371 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 09:11:29,371 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier-loop.wvr.c [2023-08-26 09:11:29,380 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca96d27b/ab10f8d18fc14bd9859ebc69c6d5b528/FLAGb7bef3888 [2023-08-26 09:11:29,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca96d27b/ab10f8d18fc14bd9859ebc69c6d5b528 [2023-08-26 09:11:29,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 09:11:29,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 09:11:29,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 09:11:29,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 09:11:29,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 09:11:29,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8e86e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29, skipping insertion in model container [2023-08-26 09:11:29,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,428 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 09:11:29,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:11:29,596 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 09:11:29,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:11:29,675 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 09:11:29,675 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 09:11:29,681 INFO L206 MainTranslator]: Completed translation [2023-08-26 09:11:29,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29 WrapperNode [2023-08-26 09:11:29,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 09:11:29,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 09:11:29,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 09:11:29,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 09:11:29,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,755 INFO L138 Inliner]: procedures = 25, calls = 121, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 512 [2023-08-26 09:11:29,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 09:11:29,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 09:11:29,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 09:11:29,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 09:11:29,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,780 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 09:11:29,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 09:11:29,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 09:11:29,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 09:11:29,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (1/1) ... [2023-08-26 09:11:29,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:11:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:11:29,861 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 09:11:29,885 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 09:11:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 09:11:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 09:11:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 09:11:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 09:11:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 09:11:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 09:11:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 09:11:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 09:11:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 09:11:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 09:11:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-26 09:11:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-26 09:11:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 09:11:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-26 09:11:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-26 09:11:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-26 09:11:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-26 09:11:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 09:11:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 09:11:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 09:11:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 09:11:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 09:11:29,905 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 09:11:30,043 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 09:11:30,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 09:11:30,563 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 09:11:30,703 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 09:11:30,703 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 09:11:30,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:11:30 BoogieIcfgContainer [2023-08-26 09:11:30,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 09:11:30,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 09:11:30,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 09:11:30,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 09:11:30,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:11:29" (1/3) ... [2023-08-26 09:11:30,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fdf43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:11:30, skipping insertion in model container [2023-08-26 09:11:30,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:11:29" (2/3) ... [2023-08-26 09:11:30,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fdf43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:11:30, skipping insertion in model container [2023-08-26 09:11:30,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:11:30" (3/3) ... [2023-08-26 09:11:30,718 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2023-08-26 09:11:30,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 09:11:30,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2023-08-26 09:11:30,735 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 09:11:30,868 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-26 09:11:30,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 483 places, 480 transitions, 1032 flow [2023-08-26 09:11:31,152 INFO L124 PetriNetUnfolderBase]: 16/440 cut-off events. [2023-08-26 09:11:31,153 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 09:11:31,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 440 events. 16/440 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 869 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 362. Up to 3 conditions per place. [2023-08-26 09:11:31,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 483 places, 480 transitions, 1032 flow [2023-08-26 09:11:31,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 431 transitions, 910 flow [2023-08-26 09:11:31,184 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 09:11:31,196 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 431 transitions, 910 flow [2023-08-26 09:11:31,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 431 transitions, 910 flow [2023-08-26 09:11:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 431 transitions, 910 flow [2023-08-26 09:11:31,288 INFO L124 PetriNetUnfolderBase]: 16/431 cut-off events. [2023-08-26 09:11:31,288 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 09:11:31,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 431 events. 16/431 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 867 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 362. Up to 3 conditions per place. [2023-08-26 09:11:31,311 INFO L119 LiptonReduction]: Number of co-enabled transitions 33080 [2023-08-26 09:11:38,567 INFO L134 LiptonReduction]: Checked pairs total: 485552 [2023-08-26 09:11:38,567 INFO L136 LiptonReduction]: Total number of compositions: 425 [2023-08-26 09:11:38,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 09:11:38,592 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;@7263b2a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 09:11:38,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 149 error locations. [2023-08-26 09:11:38,594 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 09:11:38,594 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 09:11:38,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:11:38,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:11:38,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 09:11:38,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 145 more)] === [2023-08-26 09:11:38,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:11:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2061, now seen corresponding path program 1 times [2023-08-26 09:11:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:11:38,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589138876] [2023-08-26 09:11:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:11:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:11:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:11:38,712 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 09:11:38,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:11:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589138876] [2023-08-26 09:11:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589138876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:11:38,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:11:38,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 09:11:38,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076303736] [2023-08-26 09:11:38,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:11:38,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 09:11:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:11:38,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 09:11:38,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 09:11:38,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 909 [2023-08-26 09:11:38,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 199 transitions, 446 flow. Second operand has 2 states, 2 states have (on average 367.5) internal successors, (735), 2 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 09:11:38,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:11:38,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 909 [2023-08-26 09:11:38,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:12:07,306 INFO L124 PetriNetUnfolderBase]: 332085/424034 cut-off events. [2023-08-26 09:12:07,307 INFO L125 PetriNetUnfolderBase]: For 34886/38179 co-relation queries the response was YES. [2023-08-26 09:12:09,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863963 conditions, 424034 events. 332085/424034 cut-off events. For 34886/38179 co-relation queries the response was YES. Maximal size of possible extension queue 8926. Compared 2544404 event pairs, 293865 based on Foata normal form. 390/380497 useless extension candidates. Maximal degree in co-relation 859834. Up to 408137 conditions per place. [2023-08-26 09:12:11,394 INFO L140 encePairwiseOnDemand]: 833/909 looper letters, 67 selfloop transitions, 0 changer transitions 0/123 dead transitions. [2023-08-26 09:12:11,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 123 transitions, 428 flow [2023-08-26 09:12:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 09:12:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 09:12:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 877 transitions. [2023-08-26 09:12:11,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823982398239824 [2023-08-26 09:12:11,409 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 877 transitions. [2023-08-26 09:12:11,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 877 transitions. [2023-08-26 09:12:11,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:12:11,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 877 transitions. [2023-08-26 09:12:11,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 438.5) internal successors, (877), 2 states have internal predecessors, (877), 0 states have call successors, (0), 0 states 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 09:12:11,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 909.0) internal successors, (2727), 3 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states 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 09:12:11,428 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 909.0) internal successors, (2727), 3 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states 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 09:12:11,429 INFO L175 Difference]: Start difference. First operand has 210 places, 199 transitions, 446 flow. Second operand 2 states and 877 transitions. [2023-08-26 09:12:11,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 123 transitions, 428 flow [2023-08-26 09:12:13,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 123 transitions, 396 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-26 09:12:13,840 INFO L231 Difference]: Finished difference. Result has 123 places, 123 transitions, 262 flow [2023-08-26 09:12:13,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=909, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=123, PETRI_TRANSITIONS=123} [2023-08-26 09:12:13,845 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, -87 predicate places. [2023-08-26 09:12:13,845 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 262 flow [2023-08-26 09:12:13,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 367.5) internal successors, (735), 2 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 09:12:13,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:12:13,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:12:13,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 09:12:13,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 145 more)] === [2023-08-26 09:12:13,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:12:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash -900013315, now seen corresponding path program 1 times [2023-08-26 09:12:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:12:13,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17085008] [2023-08-26 09:12:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:12:13,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:12:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:12:14,419 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 09:12:14,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:12:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17085008] [2023-08-26 09:12:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17085008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:12:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:12:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:12:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174598529] [2023-08-26 09:12:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:12:14,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:12:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:12:14,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:12:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:12:14,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 909 [2023-08-26 09:12:14,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 314.6666666666667) internal successors, (1888), 6 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states 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 09:12:14,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:12:14,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 909 [2023-08-26 09:12:14,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand