/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:14:31,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:14:31,753 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 04:14:31,758 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:14:31,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:14:31,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:14:31,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:14:31,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:14:31,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:14:31,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:14:31,797 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:14:31,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:14:31,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:14:31,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:14:31,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:14:31,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:14:31,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:14:31,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:14:31,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:14:31,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:14:31,801 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:14:31,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:14:31,802 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:14:31,802 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:14:31,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:14:31,803 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:14:31,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:14:31,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:14:31,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:14:31,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:14:31,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:14:31,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:14:31,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:14:31,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:14:31,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:14:31,806 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:14:32,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:14:32,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:14:32,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:14:32,165 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:14:32,166 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:14:32,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-25 04:14:33,378 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:14:33,692 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:14:33,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-25 04:14:33,715 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1151f69/7e645c3c4cf64fa58861656288fc5acf/FLAG092cf5d1e [2023-08-25 04:14:33,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1151f69/7e645c3c4cf64fa58861656288fc5acf [2023-08-25 04:14:33,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:14:33,731 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:14:33,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:14:33,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:14:33,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:14:33,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:14:33" (1/1) ... [2023-08-25 04:14:33,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c769fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:33, skipping insertion in model container [2023-08-25 04:14:33,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:14:33" (1/1) ... [2023-08-25 04:14:33,784 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:14:34,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:14:34,260 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:14:34,285 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 04:14:34,287 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 04:14:34,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:14:34,395 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:14:34,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34 WrapperNode [2023-08-25 04:14:34,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:14:34,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:14:34,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:14:34,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:14:34,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,497 INFO L138 Inliner]: procedures = 278, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 319 [2023-08-25 04:14:34,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:14:34,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:14:34,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:14:34,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:14:34,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:14:34,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:14:34,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:14:34,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:14:34,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (1/1) ... [2023-08-25 04:14:34,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:14:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:14:34,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 04:14:34,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 04:14:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:14:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-25 04:14:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-25 04:14:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-25 04:14:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:14:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:14:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-25 04:14:34,628 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-25 04:14:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:14:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:14:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 04:14:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:14:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-25 04:14:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:14:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:14:34,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:14:34,630 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 04:14:34,829 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:14:34,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:14:35,372 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:14:35,386 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:14:35,386 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-25 04:14:35,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:14:35 BoogieIcfgContainer [2023-08-25 04:14:35,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:14:35,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:14:35,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:14:35,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:14:35,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:14:33" (1/3) ... [2023-08-25 04:14:35,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391cac9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:14:35, skipping insertion in model container [2023-08-25 04:14:35,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:14:34" (2/3) ... [2023-08-25 04:14:35,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391cac9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:14:35, skipping insertion in model container [2023-08-25 04:14:35,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:14:35" (3/3) ... [2023-08-25 04:14:35,397 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-08-25 04:14:35,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:14:35,413 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-08-25 04:14:35,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:14:35,550 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 04:14:35,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 343 transitions, 708 flow [2023-08-25 04:14:35,869 INFO L124 PetriNetUnfolderBase]: 54/631 cut-off events. [2023-08-25 04:14:35,870 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-25 04:14:35,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 631 events. 54/631 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2922 event pairs, 0 based on Foata normal form. 0/533 useless extension candidates. Maximal degree in co-relation 314. Up to 8 conditions per place. [2023-08-25 04:14:35,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 343 transitions, 708 flow [2023-08-25 04:14:35,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 343 transitions, 708 flow [2023-08-25 04:14:35,908 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:14:35,924 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 343 transitions, 708 flow [2023-08-25 04:14:35,928 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 343 transitions, 708 flow [2023-08-25 04:14:35,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 343 transitions, 708 flow [2023-08-25 04:14:36,056 INFO L124 PetriNetUnfolderBase]: 54/631 cut-off events. [2023-08-25 04:14:36,056 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-25 04:14:36,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 631 events. 54/631 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2922 event pairs, 0 based on Foata normal form. 0/533 useless extension candidates. Maximal degree in co-relation 314. Up to 8 conditions per place. [2023-08-25 04:14:36,093 INFO L119 LiptonReduction]: Number of co-enabled transitions 41528 [2023-08-25 04:14:50,327 WARN L234 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 193 DAG size of output: 191 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:14:58,950 INFO L134 LiptonReduction]: Checked pairs total: 205223 [2023-08-25 04:14:58,950 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-25 04:14:58,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:14:58,966 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;@3b9b5a94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:14:58,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-25 04:14:58,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:14:58,968 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 04:14:58,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:14:58,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:14:58,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 04:14:58,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-08-25 04:14:58,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:14:58,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1245, now seen corresponding path program 1 times [2023-08-25 04:14:58,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:14:58,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123348232] [2023-08-25 04:14:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:14:58,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:14:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:14:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:14:59,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:14:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123348232] [2023-08-25 04:14:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123348232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:14:59,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:14:59,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 04:14:59,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204794510] [2023-08-25 04:14:59,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:14:59,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:14:59,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:14:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:14:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:14:59,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 571 [2023-08-25 04:14:59,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 158 transitions, 338 flow. Second operand has 2 states, 2 states have (on average 319.5) internal successors, (639), 2 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:14:59,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:14:59,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 571 [2023-08-25 04:14:59,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:15:01,121 INFO L124 PetriNetUnfolderBase]: 6988/17890 cut-off events. [2023-08-25 04:15:01,122 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-08-25 04:15:01,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28793 conditions, 17890 events. 6988/17890 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 170122 event pairs, 6594 based on Foata normal form. 775/16418 useless extension candidates. Maximal degree in co-relation 27136. Up to 10774 conditions per place. [2023-08-25 04:15:01,233 INFO L140 encePairwiseOnDemand]: 556/571 looper letters, 59 selfloop transitions, 0 changer transitions 0/143 dead transitions. [2023-08-25 04:15:01,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 426 flow [2023-08-25 04:15:01,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:15:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:15:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 712 transitions. [2023-08-25 04:15:01,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6234676007005254 [2023-08-25 04:15:01,247 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 712 transitions. [2023-08-25 04:15:01,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 712 transitions. [2023-08-25 04:15:01,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:15:01,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 712 transitions. [2023-08-25 04:15:01,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 356.0) internal successors, (712), 2 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:01,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:01,264 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:01,266 INFO L175 Difference]: Start difference. First operand has 146 places, 158 transitions, 338 flow. Second operand 2 states and 712 transitions. [2023-08-25 04:15:01,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 426 flow [2023-08-25 04:15:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 143 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:15:01,285 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 308 flow [2023-08-25 04:15:01,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=308, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2023-08-25 04:15:01,291 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -3 predicate places. [2023-08-25 04:15:01,291 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 308 flow [2023-08-25 04:15:01,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 319.5) internal successors, (639), 2 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:01,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:15:01,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 04:15:01,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:15:01,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-08-25 04:15:01,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:15:01,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1797830783, now seen corresponding path program 1 times [2023-08-25 04:15:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:15:01,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297247089] [2023-08-25 04:15:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:15:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:15:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:15:01,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:15:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:15:01,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:15:01,508 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:15:01,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2023-08-25 04:15:01,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2023-08-25 04:15:01,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2023-08-25 04:15:01,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2023-08-25 04:15:01,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2023-08-25 04:15:01,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2023-08-25 04:15:01,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2023-08-25 04:15:01,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8ASSERT_VIOLATIONASSERT (30 of 38 remaining) [2023-08-25 04:15:01,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2023-08-25 04:15:01,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2023-08-25 04:15:01,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2023-08-25 04:15:01,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2023-08-25 04:15:01,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2023-08-25 04:15:01,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2023-08-25 04:15:01,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2023-08-25 04:15:01,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2023-08-25 04:15:01,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 38 remaining) [2023-08-25 04:15:01,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2023-08-25 04:15:01,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2023-08-25 04:15:01,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2023-08-25 04:15:01,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2023-08-25 04:15:01,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2023-08-25 04:15:01,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2023-08-25 04:15:01,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2023-08-25 04:15:01,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2023-08-25 04:15:01,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2023-08-25 04:15:01,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2023-08-25 04:15:01,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2023-08-25 04:15:01,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2023-08-25 04:15:01,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8ASSERT_VIOLATIONASSERT (8 of 38 remaining) [2023-08-25 04:15:01,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2023-08-25 04:15:01,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2023-08-25 04:15:01,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2023-08-25 04:15:01,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2023-08-25 04:15:01,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2023-08-25 04:15:01,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2023-08-25 04:15:01,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2023-08-25 04:15:01,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2023-08-25 04:15:01,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 04:15:01,531 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 04:15:01,536 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:15:01,536 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:15:01,644 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-25 04:15:01,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 516 places, 551 transitions, 1150 flow [2023-08-25 04:15:02,165 INFO L124 PetriNetUnfolderBase]: 197/1839 cut-off events. [2023-08-25 04:15:02,166 INFO L125 PetriNetUnfolderBase]: For 72/114 co-relation queries the response was YES. [2023-08-25 04:15:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 1839 events. 197/1839 cut-off events. For 72/114 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13030 event pairs, 2 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 1142. Up to 32 conditions per place. [2023-08-25 04:15:02,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 516 places, 551 transitions, 1150 flow [2023-08-25 04:15:02,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 516 places, 551 transitions, 1150 flow [2023-08-25 04:15:02,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:15:02,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 516 places, 551 transitions, 1150 flow [2023-08-25 04:15:02,320 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 516 places, 551 transitions, 1150 flow [2023-08-25 04:15:02,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 516 places, 551 transitions, 1150 flow [2023-08-25 04:15:02,732 INFO L124 PetriNetUnfolderBase]: 197/1839 cut-off events. [2023-08-25 04:15:02,732 INFO L125 PetriNetUnfolderBase]: For 72/114 co-relation queries the response was YES. [2023-08-25 04:15:02,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 1839 events. 197/1839 cut-off events. For 72/114 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13030 event pairs, 2 based on Foata normal form. 0/1539 useless extension candidates. Maximal degree in co-relation 1142. Up to 32 conditions per place. [2023-08-25 04:15:02,930 INFO L119 LiptonReduction]: Number of co-enabled transitions 168556 [2023-08-25 04:15:18,099 WARN L234 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 205 DAG size of output: 199 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:15:25,716 WARN L234 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 205 DAG size of output: 199 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:15:26,271 INFO L134 LiptonReduction]: Checked pairs total: 1089753 [2023-08-25 04:15:26,272 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-25 04:15:26,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:15:26,274 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;@3b9b5a94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:15:26,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-25 04:15:26,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:15:26,275 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 04:15:26,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:15:26,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:15:26,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 04:15:26,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-08-25 04:15:26,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:15:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2329, now seen corresponding path program 1 times [2023-08-25 04:15:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:15:26,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012936459] [2023-08-25 04:15:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:15:26,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:15:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:15:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:15:26,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:15:26,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012936459] [2023-08-25 04:15:26,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012936459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:15:26,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:15:26,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 04:15:26,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958840369] [2023-08-25 04:15:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:15:26,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:15:26,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:15:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:15:26,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:15:26,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 507 out of 878 [2023-08-25 04:15:26,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 285 transitions, 618 flow. Second operand has 2 states, 2 states have (on average 507.5) internal successors, (1015), 2 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:15:26,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:15:26,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 507 of 878 [2023-08-25 04:15:26,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand