/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 INSUFFICIENT_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/goblint-regression/06-symbeq_03-funloop_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:18:02,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:18:02,719 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 17:18:02,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:18:02,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:18:02,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:18:02,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:18:02,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:18:02,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:18:02,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:18:02,741 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:18:02,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:18:02,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:18:02,742 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:18:02,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:18:02,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:18:02,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:18:02,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:18:02,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:18:02,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:18:02,743 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:18:02,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:18:02,746 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:18:02,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:18:02,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:18:02,746 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:18:02,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:18:02,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:18:02,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:18:02,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:18:02,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:18:02,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:18:02,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:18:02,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:18:02,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:18:02,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:18:02,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:18:03,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:18:03,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:18:03,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:18:03,006 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:18:03,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_03-funloop_simple.i [2023-08-25 17:18:03,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:18:04,109 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:18:04,109 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_03-funloop_simple.i [2023-08-25 17:18:04,122 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7cdefe6/d725d7a44d7b46c886620eb1fd50137d/FLAG68902a157 [2023-08-25 17:18:04,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7cdefe6/d725d7a44d7b46c886620eb1fd50137d [2023-08-25 17:18:04,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:18:04,139 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:18:04,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:18:04,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:18:04,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:18:04,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233f8dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04, skipping insertion in model container [2023-08-25 17:18:04,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,180 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:18:04,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:18:04,476 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:18:04,488 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:18:04,489 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:18:04,494 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-25 17:18:04,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:18:04,540 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:18:04,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04 WrapperNode [2023-08-25 17:18:04,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:18:04,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:18:04,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:18:04,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:18:04,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,574 INFO L138 Inliner]: procedures = 262, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2023-08-25 17:18:04,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:18:04,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:18:04,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:18:04,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:18:04,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:18:04,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:18:04,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:18:04,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:18:04,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (1/1) ... [2023-08-25 17:18:04,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:18:04,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:04,624 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 17:18:04,628 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 17:18:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:18:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:18:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:18:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:18:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:18:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:18:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 17:18:04,645 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 17:18:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:18:04,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:18:04,646 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 17:18:04,756 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:18:04,757 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:18:04,979 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:18:04,984 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:18:04,985 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 17:18:04,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:18:04 BoogieIcfgContainer [2023-08-25 17:18:04,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:18:04,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:18:04,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:18:04,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:18:04,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:18:04" (1/3) ... [2023-08-25 17:18:04,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78740155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:18:04, skipping insertion in model container [2023-08-25 17:18:04,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:04" (2/3) ... [2023-08-25 17:18:04,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78740155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:18:04, skipping insertion in model container [2023-08-25 17:18:04,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:18:04" (3/3) ... [2023-08-25 17:18:04,993 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_03-funloop_simple.i [2023-08-25 17:18:05,005 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:18:05,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-25 17:18:05,006 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:18:05,062 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 17:18:05,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 120 transitions, 245 flow [2023-08-25 17:18:05,147 INFO L124 PetriNetUnfolderBase]: 6/119 cut-off events. [2023-08-25 17:18:05,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:05,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 119 events. 6/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 210 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-08-25 17:18:05,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 120 transitions, 245 flow [2023-08-25 17:18:05,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 119 transitions, 241 flow [2023-08-25 17:18:05,160 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:18:05,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 119 transitions, 241 flow [2023-08-25 17:18:05,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 119 transitions, 241 flow [2023-08-25 17:18:05,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 119 transitions, 241 flow [2023-08-25 17:18:05,210 INFO L124 PetriNetUnfolderBase]: 6/119 cut-off events. [2023-08-25 17:18:05,210 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:05,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 119 events. 6/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 210 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-08-25 17:18:05,214 INFO L119 LiptonReduction]: Number of co-enabled transitions 4366 [2023-08-25 17:18:06,435 INFO L134 LiptonReduction]: Checked pairs total: 13471 [2023-08-25 17:18:06,436 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-25 17:18:06,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:18:06,448 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;@677a85e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:18:06,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-25 17:18:06,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:18:06,452 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2023-08-25 17:18:06,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:06,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:06,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:06,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:06,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1480078767, now seen corresponding path program 1 times [2023-08-25 17:18:06,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:06,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761367032] [2023-08-25 17:18:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:06,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:06,587 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 17:18:06,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:06,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761367032] [2023-08-25 17:18:06,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761367032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:06,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:06,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:18:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910964463] [2023-08-25 17:18:06,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:06,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:18:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:06,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:18:06,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:18:06,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-25 17:18:06,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 17:18:06,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:06,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-25 17:18:06,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:06,687 INFO L124 PetriNetUnfolderBase]: 90/369 cut-off events. [2023-08-25 17:18:06,688 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:06,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 369 events. 90/369 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2004 event pairs, 70 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 540. Up to 181 conditions per place. [2023-08-25 17:18:06,690 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 22 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-25 17:18:06,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 159 flow [2023-08-25 17:18:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:18:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:18:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-08-25 17:18:06,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6155202821869489 [2023-08-25 17:18:06,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-08-25 17:18:06,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-08-25 17:18:06,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:06,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-08-25 17:18:06,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 17:18:06,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 17:18:06,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 17:18:06,710 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 109 flow. Second operand 3 states and 349 transitions. [2023-08-25 17:18:06,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 159 flow [2023-08-25 17:18:06,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:06,713 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 120 flow [2023-08-25 17:18:06,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-08-25 17:18:06,716 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-08-25 17:18:06,716 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 120 flow [2023-08-25 17:18:06,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 17:18:06,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:06,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:06,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:18:06,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:06,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash -267564913, now seen corresponding path program 1 times [2023-08-25 17:18:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:06,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115555196] [2023-08-25 17:18:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:06,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:06,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115555196] [2023-08-25 17:18:06,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115555196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721711213] [2023-08-25 17:18:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:06,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:06,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:06,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:06,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 17:18:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:06,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-25 17:18:06,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 17:18:06,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:06,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721711213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:06,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:06,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-25 17:18:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100927597] [2023-08-25 17:18:06,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:06,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:18:06,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:18:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 17:18:06,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-25 17:18:06,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 17:18:06,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:06,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-25 17:18:06,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:06,950 INFO L124 PetriNetUnfolderBase]: 138/545 cut-off events. [2023-08-25 17:18:06,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:06,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 545 events. 138/545 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2892 event pairs, 73 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 822. Up to 182 conditions per place. [2023-08-25 17:18:06,955 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 36 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-25 17:18:06,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 224 flow [2023-08-25 17:18:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:18:06,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:18:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-25 17:18:06,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384479717813051 [2023-08-25 17:18:06,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-25 17:18:06,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-25 17:18:06,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:06,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-25 17:18:06,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 17:18:06,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 17:18:06,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 17:18:06,965 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 120 flow. Second operand 3 states and 362 transitions. [2023-08-25 17:18:06,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 224 flow [2023-08-25 17:18:06,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:06,970 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 128 flow [2023-08-25 17:18:06,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-08-25 17:18:06,975 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2023-08-25 17:18:06,976 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 128 flow [2023-08-25 17:18:06,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 17:18:06,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:06,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:06,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 17:18:07,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:07,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:07,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2115531480, now seen corresponding path program 1 times [2023-08-25 17:18:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:07,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995264183] [2023-08-25 17:18:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:07,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:07,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:07,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995264183] [2023-08-25 17:18:07,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995264183] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436730121] [2023-08-25 17:18:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:07,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:07,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:07,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 17:18:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:07,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:18:07,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:07,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:07,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436730121] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:07,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:07,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-25 17:18:07,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490006463] [2023-08-25 17:18:07,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:07,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:07,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:07,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:07,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:07,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-25 17:18:07,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 17:18:07,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:07,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-25 17:18:07,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:07,479 INFO L124 PetriNetUnfolderBase]: 138/548 cut-off events. [2023-08-25 17:18:07,479 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-25 17:18:07,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 548 events. 138/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2933 event pairs, 112 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 856. Up to 277 conditions per place. [2023-08-25 17:18:07,482 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 23 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-25 17:18:07,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 196 flow [2023-08-25 17:18:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2023-08-25 17:18:07,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2023-08-25 17:18:07,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 678 transitions. [2023-08-25 17:18:07,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 678 transitions. [2023-08-25 17:18:07,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:07,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 678 transitions. [2023-08-25 17:18:07,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states 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 17:18:07,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:07,487 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:07,487 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 128 flow. Second operand 6 states and 678 transitions. [2023-08-25 17:18:07,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 196 flow [2023-08-25 17:18:07,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:07,489 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 162 flow [2023-08-25 17:18:07,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2023-08-25 17:18:07,490 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-08-25 17:18:07,491 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 162 flow [2023-08-25 17:18:07,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 17:18:07,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:07,491 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:07,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-25 17:18:07,695 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,SelfDestructingSolverStorable2 [2023-08-25 17:18:07,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:07,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash 149189048, now seen corresponding path program 2 times [2023-08-25 17:18:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:07,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55619847] [2023-08-25 17:18:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:07,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:07,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55619847] [2023-08-25 17:18:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55619847] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:07,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659422845] [2023-08-25 17:18:07,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:07,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:07,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:07,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:07,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 17:18:07,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 17:18:07,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:07,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 17:18:07,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:07,884 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 [2023-08-25 17:18:07,900 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 18 [2023-08-25 17:18:07,919 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 17:18:07,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:18:07,942 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 17:18:07,942 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:18:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 17:18:07,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659422845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:07,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:07,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-08-25 17:18:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106163921] [2023-08-25 17:18:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:07,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 17:18:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 17:18:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-25 17:18:07,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 189 [2023-08-25 17:18:07,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 162 flow. Second operand has 9 states, 9 states have (on average 63.333333333333336) internal successors, (570), 9 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 17:18:07,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:07,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 189 [2023-08-25 17:18:07,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:08,632 INFO L124 PetriNetUnfolderBase]: 1899/3802 cut-off events. [2023-08-25 17:18:08,632 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-25 17:18:08,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7793 conditions, 3802 events. 1899/3802 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 21716 event pairs, 810 based on Foata normal form. 0/3286 useless extension candidates. Maximal degree in co-relation 7759. Up to 1700 conditions per place. [2023-08-25 17:18:08,648 INFO L140 encePairwiseOnDemand]: 173/189 looper letters, 279 selfloop transitions, 27 changer transitions 0/306 dead transitions. [2023-08-25 17:18:08,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 306 transitions, 1326 flow [2023-08-25 17:18:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 17:18:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 17:18:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 916 transitions. [2023-08-25 17:18:08,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846560846560847 [2023-08-25 17:18:08,650 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 916 transitions. [2023-08-25 17:18:08,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 916 transitions. [2023-08-25 17:18:08,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:08,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 916 transitions. [2023-08-25 17:18:08,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 17:18:08,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states 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 17:18:08,655 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states 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 17:18:08,655 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 162 flow. Second operand 10 states and 916 transitions. [2023-08-25 17:18:08,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 306 transitions, 1326 flow [2023-08-25 17:18:08,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 306 transitions, 1312 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:08,659 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 352 flow [2023-08-25 17:18:08,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=352, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2023-08-25 17:18:08,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2023-08-25 17:18:08,660 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 352 flow [2023-08-25 17:18:08,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.333333333333336) internal successors, (570), 9 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 17:18:08,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:08,660 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:08,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:08,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:08,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:08,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2089455146, now seen corresponding path program 1 times [2023-08-25 17:18:08,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:08,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754275264] [2023-08-25 17:18:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:08,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:08,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:08,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754275264] [2023-08-25 17:18:08,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754275264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:08,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975265870] [2023-08-25 17:18:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:08,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:08,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:08,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 17:18:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:09,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 17:18:09,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:09,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:09,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975265870] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:09,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:09,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-25 17:18:09,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583657753] [2023-08-25 17:18:09,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:09,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 17:18:09,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 17:18:09,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-25 17:18:09,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-25 17:18:09,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 17:18:09,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:09,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-25 17:18:09,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:09,232 INFO L124 PetriNetUnfolderBase]: 452/1563 cut-off events. [2023-08-25 17:18:09,232 INFO L125 PetriNetUnfolderBase]: For 964/988 co-relation queries the response was YES. [2023-08-25 17:18:09,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3682 conditions, 1563 events. 452/1563 cut-off events. For 964/988 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 10432 event pairs, 311 based on Foata normal form. 11/1510 useless extension candidates. Maximal degree in co-relation 3623. Up to 753 conditions per place. [2023-08-25 17:18:09,240 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 31 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2023-08-25 17:18:09,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 89 transitions, 472 flow [2023-08-25 17:18:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 17:18:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 17:18:09,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1335 transitions. [2023-08-25 17:18:09,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886243386243386 [2023-08-25 17:18:09,243 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1335 transitions. [2023-08-25 17:18:09,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1335 transitions. [2023-08-25 17:18:09,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:09,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1335 transitions. [2023-08-25 17:18:09,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.25) internal successors, (1335), 12 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states 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 17:18:09,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states 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 17:18:09,248 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states 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 17:18:09,248 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 352 flow. Second operand 12 states and 1335 transitions. [2023-08-25 17:18:09,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 89 transitions, 472 flow [2023-08-25 17:18:09,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:09,255 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 435 flow [2023-08-25 17:18:09,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=435, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2023-08-25 17:18:09,257 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2023-08-25 17:18:09,257 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 435 flow [2023-08-25 17:18:09,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 17:18:09,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:09,258 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:09,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:09,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:09,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:09,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash 746912298, now seen corresponding path program 2 times [2023-08-25 17:18:09,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:09,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831366152] [2023-08-25 17:18:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:09,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:09,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:09,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831366152] [2023-08-25 17:18:09,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831366152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:09,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:09,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:18:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295187685] [2023-08-25 17:18:09,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:09,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:09,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:09,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:09,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-08-25 17:18:09,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 17:18:09,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:09,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-08-25 17:18:09,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:10,234 INFO L124 PetriNetUnfolderBase]: 2130/4310 cut-off events. [2023-08-25 17:18:10,235 INFO L125 PetriNetUnfolderBase]: For 3557/3557 co-relation queries the response was YES. [2023-08-25 17:18:10,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11898 conditions, 4310 events. 2130/4310 cut-off events. For 3557/3557 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 25639 event pairs, 1104 based on Foata normal form. 0/3976 useless extension candidates. Maximal degree in co-relation 11815. Up to 3399 conditions per place. [2023-08-25 17:18:10,256 INFO L140 encePairwiseOnDemand]: 178/189 looper letters, 172 selfloop transitions, 30 changer transitions 0/203 dead transitions. [2023-08-25 17:18:10,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 203 transitions, 1299 flow [2023-08-25 17:18:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2023-08-25 17:18:10,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070546737213404 [2023-08-25 17:18:10,258 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2023-08-25 17:18:10,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2023-08-25 17:18:10,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:10,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2023-08-25 17:18:10,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 17:18:10,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:10,261 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:10,261 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 435 flow. Second operand 6 states and 575 transitions. [2023-08-25 17:18:10,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 203 transitions, 1299 flow [2023-08-25 17:18:10,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 203 transitions, 1251 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-25 17:18:10,267 INFO L231 Difference]: Finished difference. Result has 100 places, 114 transitions, 611 flow [2023-08-25 17:18:10,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=611, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2023-08-25 17:18:10,269 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2023-08-25 17:18:10,270 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 611 flow [2023-08-25 17:18:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 17:18:10,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:10,270 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:10,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 17:18:10,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:10,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:10,270 INFO L85 PathProgramCache]: Analyzing trace with hash 553650768, now seen corresponding path program 1 times [2023-08-25 17:18:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:10,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335057024] [2023-08-25 17:18:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:10,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:10,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335057024] [2023-08-25 17:18:10,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335057024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:10,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:18:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635960422] [2023-08-25 17:18:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:10,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:10,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 189 [2023-08-25 17:18:10,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 611 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 17:18:10,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:10,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 189 [2023-08-25 17:18:10,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:11,189 INFO L124 PetriNetUnfolderBase]: 2574/5200 cut-off events. [2023-08-25 17:18:11,190 INFO L125 PetriNetUnfolderBase]: For 6554/6554 co-relation queries the response was YES. [2023-08-25 17:18:11,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16475 conditions, 5200 events. 2574/5200 cut-off events. For 6554/6554 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 32016 event pairs, 1069 based on Foata normal form. 0/4884 useless extension candidates. Maximal degree in co-relation 16412. Up to 4271 conditions per place. [2023-08-25 17:18:11,272 INFO L140 encePairwiseOnDemand]: 166/189 looper letters, 164 selfloop transitions, 90 changer transitions 0/255 dead transitions. [2023-08-25 17:18:11,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 255 transitions, 1718 flow [2023-08-25 17:18:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 610 transitions. [2023-08-25 17:18:11,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379188712522046 [2023-08-25 17:18:11,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 610 transitions. [2023-08-25 17:18:11,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 610 transitions. [2023-08-25 17:18:11,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:11,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 610 transitions. [2023-08-25 17:18:11,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 17:18:11,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:11,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:11,276 INFO L175 Difference]: Start difference. First operand has 100 places, 114 transitions, 611 flow. Second operand 6 states and 610 transitions. [2023-08-25 17:18:11,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 255 transitions, 1718 flow [2023-08-25 17:18:11,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 255 transitions, 1718 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:11,285 INFO L231 Difference]: Finished difference. Result has 110 places, 194 transitions, 1450 flow [2023-08-25 17:18:11,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1450, PETRI_PLACES=110, PETRI_TRANSITIONS=194} [2023-08-25 17:18:11,285 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2023-08-25 17:18:11,285 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 194 transitions, 1450 flow [2023-08-25 17:18:11,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 17:18:11,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:11,286 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:11,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 17:18:11,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:11,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1845696296, now seen corresponding path program 1 times [2023-08-25 17:18:11,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:11,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598754861] [2023-08-25 17:18:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:11,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:11,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:11,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598754861] [2023-08-25 17:18:11,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598754861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:11,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:18:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732174482] [2023-08-25 17:18:11,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:11,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 189 [2023-08-25 17:18:11,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 194 transitions, 1450 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 17:18:11,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:11,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 189 [2023-08-25 17:18:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:12,194 INFO L124 PetriNetUnfolderBase]: 2922/5904 cut-off events. [2023-08-25 17:18:12,194 INFO L125 PetriNetUnfolderBase]: For 12333/12333 co-relation queries the response was YES. [2023-08-25 17:18:12,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23067 conditions, 5904 events. 2922/5904 cut-off events. For 12333/12333 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 37257 event pairs, 992 based on Foata normal form. 0/5704 useless extension candidates. Maximal degree in co-relation 22999. Up to 5044 conditions per place. [2023-08-25 17:18:12,226 INFO L140 encePairwiseOnDemand]: 174/189 looper letters, 244 selfloop transitions, 72 changer transitions 0/317 dead transitions. [2023-08-25 17:18:12,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 317 transitions, 2806 flow [2023-08-25 17:18:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2023-08-25 17:18:12,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49559082892416223 [2023-08-25 17:18:12,228 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2023-08-25 17:18:12,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2023-08-25 17:18:12,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:12,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2023-08-25 17:18:12,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states 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 17:18:12,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:12,231 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:12,231 INFO L175 Difference]: Start difference. First operand has 110 places, 194 transitions, 1450 flow. Second operand 6 states and 562 transitions. [2023-08-25 17:18:12,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 317 transitions, 2806 flow [2023-08-25 17:18:12,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 317 transitions, 2604 flow, removed 101 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:12,270 INFO L231 Difference]: Finished difference. Result has 120 places, 252 transitions, 1990 flow [2023-08-25 17:18:12,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1990, PETRI_PLACES=120, PETRI_TRANSITIONS=252} [2023-08-25 17:18:12,270 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2023-08-25 17:18:12,271 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 252 transitions, 1990 flow [2023-08-25 17:18:12,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 17:18:12,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:12,271 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:12,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 17:18:12,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:12,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:12,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1230778107, now seen corresponding path program 1 times [2023-08-25 17:18:12,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:12,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827842355] [2023-08-25 17:18:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:12,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-25 17:18:12,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:12,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827842355] [2023-08-25 17:18:12,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827842355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:12,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800759048] [2023-08-25 17:18:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:12,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:12,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:12,643 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:12,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 17:18:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:12,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 17:18:12,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:12,775 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 13 treesize of output 9 [2023-08-25 17:18:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:12,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:12,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800759048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:12,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:12,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-25 17:18:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147056653] [2023-08-25 17:18:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:12,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-25 17:18:12,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-25 17:18:12,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 252 transitions, 1990 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 17:18:12,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:12,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-25 17:18:12,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:13,376 INFO L124 PetriNetUnfolderBase]: 2071/4892 cut-off events. [2023-08-25 17:18:13,376 INFO L125 PetriNetUnfolderBase]: For 14761/14979 co-relation queries the response was YES. [2023-08-25 17:18:13,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20223 conditions, 4892 events. 2071/4892 cut-off events. For 14761/14979 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 34478 event pairs, 363 based on Foata normal form. 22/4798 useless extension candidates. Maximal degree in co-relation 20150. Up to 1341 conditions per place. [2023-08-25 17:18:13,411 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 193 selfloop transitions, 12 changer transitions 0/358 dead transitions. [2023-08-25 17:18:13,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 358 transitions, 3141 flow [2023-08-25 17:18:13,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 559 transitions. [2023-08-25 17:18:13,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929453262786596 [2023-08-25 17:18:13,413 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 559 transitions. [2023-08-25 17:18:13,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 559 transitions. [2023-08-25 17:18:13,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:13,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 559 transitions. [2023-08-25 17:18:13,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states 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 17:18:13,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:13,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:13,416 INFO L175 Difference]: Start difference. First operand has 120 places, 252 transitions, 1990 flow. Second operand 6 states and 559 transitions. [2023-08-25 17:18:13,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 358 transitions, 3141 flow [2023-08-25 17:18:13,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 358 transitions, 3041 flow, removed 50 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:13,453 INFO L231 Difference]: Finished difference. Result has 128 places, 260 transitions, 1995 flow [2023-08-25 17:18:13,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1995, PETRI_PLACES=128, PETRI_TRANSITIONS=260} [2023-08-25 17:18:13,454 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2023-08-25 17:18:13,454 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 260 transitions, 1995 flow [2023-08-25 17:18:13,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 17:18:13,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:13,454 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:13,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:13,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:13,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:13,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:13,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1342936505, now seen corresponding path program 2 times [2023-08-25 17:18:13,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:13,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252651104] [2023-08-25 17:18:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:13,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-25 17:18:13,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252651104] [2023-08-25 17:18:13,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252651104] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983856644] [2023-08-25 17:18:13,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:13,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:13,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:13,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:13,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 17:18:14,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 17:18:14,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:14,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 17:18:14,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:14,086 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 13 treesize of output 9 [2023-08-25 17:18:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:14,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983856644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:14,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-25 17:18:14,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851097223] [2023-08-25 17:18:14,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:14,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:14,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:14,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-25 17:18:14,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-25 17:18:14,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 260 transitions, 1995 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 17:18:14,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:14,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-25 17:18:14,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:14,723 INFO L124 PetriNetUnfolderBase]: 2339/5530 cut-off events. [2023-08-25 17:18:14,723 INFO L125 PetriNetUnfolderBase]: For 17059/17349 co-relation queries the response was YES. [2023-08-25 17:18:14,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22602 conditions, 5530 events. 2339/5530 cut-off events. For 17059/17349 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 40519 event pairs, 396 based on Foata normal form. 22/5420 useless extension candidates. Maximal degree in co-relation 22524. Up to 1711 conditions per place. [2023-08-25 17:18:14,753 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 157 selfloop transitions, 19 changer transitions 0/329 dead transitions. [2023-08-25 17:18:14,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 329 transitions, 2953 flow [2023-08-25 17:18:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2023-08-25 17:18:14,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-25 17:18:14,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 546 transitions. [2023-08-25 17:18:14,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 546 transitions. [2023-08-25 17:18:14,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:14,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 546 transitions. [2023-08-25 17:18:14,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 17:18:14,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:14,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:14,757 INFO L175 Difference]: Start difference. First operand has 128 places, 260 transitions, 1995 flow. Second operand 6 states and 546 transitions. [2023-08-25 17:18:14,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 329 transitions, 2953 flow [2023-08-25 17:18:14,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 329 transitions, 2939 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:18:14,793 INFO L231 Difference]: Finished difference. Result has 134 places, 270 transitions, 2154 flow [2023-08-25 17:18:14,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2154, PETRI_PLACES=134, PETRI_TRANSITIONS=270} [2023-08-25 17:18:14,793 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2023-08-25 17:18:14,793 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 270 transitions, 2154 flow [2023-08-25 17:18:14,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 17:18:14,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:14,794 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:14,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:15,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:15,001 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:15,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1415061544, now seen corresponding path program 1 times [2023-08-25 17:18:15,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:15,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226613640] [2023-08-25 17:18:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:15,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-25 17:18:15,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:15,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226613640] [2023-08-25 17:18:15,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226613640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717908360] [2023-08-25 17:18:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:15,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:15,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:15,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:15,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 17:18:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:15,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 17:18:15,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:15,397 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 13 treesize of output 9 [2023-08-25 17:18:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:15,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:15,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717908360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:15,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:15,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-25 17:18:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734574159] [2023-08-25 17:18:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:15,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-25 17:18:15,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-25 17:18:15,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 270 transitions, 2154 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 17:18:15,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:15,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-25 17:18:15,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:15,975 INFO L124 PetriNetUnfolderBase]: 2035/4869 cut-off events. [2023-08-25 17:18:15,976 INFO L125 PetriNetUnfolderBase]: For 16510/16773 co-relation queries the response was YES. [2023-08-25 17:18:15,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20281 conditions, 4869 events. 2035/4869 cut-off events. For 16510/16773 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 35158 event pairs, 380 based on Foata normal form. 26/4769 useless extension candidates. Maximal degree in co-relation 20200. Up to 1670 conditions per place. [2023-08-25 17:18:16,003 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 157 selfloop transitions, 22 changer transitions 0/332 dead transitions. [2023-08-25 17:18:16,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 332 transitions, 3033 flow [2023-08-25 17:18:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 17:18:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 17:18:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2023-08-25 17:18:16,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47921390778533635 [2023-08-25 17:18:16,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2023-08-25 17:18:16,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2023-08-25 17:18:16,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:16,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2023-08-25 17:18:16,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 17:18:16,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 17:18:16,008 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 17:18:16,008 INFO L175 Difference]: Start difference. First operand has 134 places, 270 transitions, 2154 flow. Second operand 7 states and 634 transitions. [2023-08-25 17:18:16,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 332 transitions, 3033 flow [2023-08-25 17:18:16,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 332 transitions, 3009 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-25 17:18:16,044 INFO L231 Difference]: Finished difference. Result has 140 places, 273 transitions, 2232 flow [2023-08-25 17:18:16,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2232, PETRI_PLACES=140, PETRI_TRANSITIONS=273} [2023-08-25 17:18:16,045 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2023-08-25 17:18:16,045 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 273 transitions, 2232 flow [2023-08-25 17:18:16,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 17:18:16,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:16,045 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:16,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:16,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:16,250 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:16,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1485006160, now seen corresponding path program 2 times [2023-08-25 17:18:16,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:16,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152252472] [2023-08-25 17:18:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:16,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-25 17:18:16,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:16,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152252472] [2023-08-25 17:18:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152252472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:16,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178920665] [2023-08-25 17:18:16,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:16,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:16,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:16,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:16,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 17:18:16,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 17:18:16,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:16,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 17:18:16,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:16,538 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 13 treesize of output 9 [2023-08-25 17:18:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:16,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:16,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178920665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:16,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:16,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-25 17:18:16,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151383412] [2023-08-25 17:18:16,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:16,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:16,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:16,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-25 17:18:16,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-25 17:18:16,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 273 transitions, 2232 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 17:18:16,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:16,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-25 17:18:16,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:17,231 INFO L124 PetriNetUnfolderBase]: 2143/5163 cut-off events. [2023-08-25 17:18:17,231 INFO L125 PetriNetUnfolderBase]: For 18014/18276 co-relation queries the response was YES. [2023-08-25 17:18:17,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21423 conditions, 5163 events. 2143/5163 cut-off events. For 18014/18276 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 39160 event pairs, 354 based on Foata normal form. 18/5028 useless extension candidates. Maximal degree in co-relation 21339. Up to 1525 conditions per place. [2023-08-25 17:18:17,263 INFO L140 encePairwiseOnDemand]: 182/189 looper letters, 248 selfloop transitions, 17 changer transitions 0/418 dead transitions. [2023-08-25 17:18:17,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 418 transitions, 3695 flow [2023-08-25 17:18:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 572 transitions. [2023-08-25 17:18:17,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044091710758377 [2023-08-25 17:18:17,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 572 transitions. [2023-08-25 17:18:17,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 572 transitions. [2023-08-25 17:18:17,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:17,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 572 transitions. [2023-08-25 17:18:17,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 17:18:17,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:17,268 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:17,268 INFO L175 Difference]: Start difference. First operand has 140 places, 273 transitions, 2232 flow. Second operand 6 states and 572 transitions. [2023-08-25 17:18:17,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 418 transitions, 3695 flow [2023-08-25 17:18:17,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 418 transitions, 3645 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-25 17:18:17,305 INFO L231 Difference]: Finished difference. Result has 143 places, 275 transitions, 2241 flow [2023-08-25 17:18:17,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2241, PETRI_PLACES=143, PETRI_TRANSITIONS=275} [2023-08-25 17:18:17,305 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2023-08-25 17:18:17,305 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 275 transitions, 2241 flow [2023-08-25 17:18:17,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 17:18:17,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:17,306 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:17,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:17,510 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,SelfDestructingSolverStorable11 [2023-08-25 17:18:17,511 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:17,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:17,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1341143083, now seen corresponding path program 1 times [2023-08-25 17:18:17,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:17,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943129243] [2023-08-25 17:18:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:17,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:17,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:17,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943129243] [2023-08-25 17:18:17,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943129243] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:17,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356097271] [2023-08-25 17:18:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:17,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:17,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:17,547 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:17,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 17:18:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:17,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:18:17,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:17,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:17,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356097271] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:17,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:17,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-25 17:18:17,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447258969] [2023-08-25 17:18:17,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:17,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 17:18:17,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 17:18:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 17:18:17,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 189 [2023-08-25 17:18:17,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 275 transitions, 2241 flow. Second operand has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 17:18:17,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:17,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 189 [2023-08-25 17:18:17,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:18,738 INFO L124 PetriNetUnfolderBase]: 3639/8960 cut-off events. [2023-08-25 17:18:18,739 INFO L125 PetriNetUnfolderBase]: For 32136/32534 co-relation queries the response was YES. [2023-08-25 17:18:18,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37878 conditions, 8960 events. 3639/8960 cut-off events. For 32136/32534 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 67765 event pairs, 412 based on Foata normal form. 111/8978 useless extension candidates. Maximal degree in co-relation 37793. Up to 2491 conditions per place. [2023-08-25 17:18:18,796 INFO L140 encePairwiseOnDemand]: 185/189 looper letters, 181 selfloop transitions, 23 changer transitions 0/395 dead transitions. [2023-08-25 17:18:18,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 395 transitions, 3765 flow [2023-08-25 17:18:18,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2023-08-25 17:18:18,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6393298059964727 [2023-08-25 17:18:18,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2023-08-25 17:18:18,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2023-08-25 17:18:18,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:18,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2023-08-25 17:18:18,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 17:18:18,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:18,801 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:18,801 INFO L175 Difference]: Start difference. First operand has 143 places, 275 transitions, 2241 flow. Second operand 6 states and 725 transitions. [2023-08-25 17:18:18,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 395 transitions, 3765 flow [2023-08-25 17:18:18,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 395 transitions, 3740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:18:18,862 INFO L231 Difference]: Finished difference. Result has 150 places, 284 transitions, 2403 flow [2023-08-25 17:18:18,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2403, PETRI_PLACES=150, PETRI_TRANSITIONS=284} [2023-08-25 17:18:18,862 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2023-08-25 17:18:18,862 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 284 transitions, 2403 flow [2023-08-25 17:18:18,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.85714285714286) internal successors, (783), 7 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 17:18:18,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:18,863 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:18,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:19,067 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,SelfDestructingSolverStorable12 [2023-08-25 17:18:19,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:19,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:19,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1136700224, now seen corresponding path program 1 times [2023-08-25 17:18:19,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:19,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473818615] [2023-08-25 17:18:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:19,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-08-25 17:18:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:19,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473818615] [2023-08-25 17:18:19,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473818615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:19,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:19,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:18:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915708003] [2023-08-25 17:18:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:19,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:19,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:19,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-08-25 17:18:19,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 284 transitions, 2403 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:19,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:19,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-08-25 17:18:19,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:21,669 INFO L124 PetriNetUnfolderBase]: 6750/13665 cut-off events. [2023-08-25 17:18:21,670 INFO L125 PetriNetUnfolderBase]: For 53084/53084 co-relation queries the response was YES. [2023-08-25 17:18:21,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64022 conditions, 13665 events. 6750/13665 cut-off events. For 53084/53084 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 94889 event pairs, 1353 based on Foata normal form. 122/13621 useless extension candidates. Maximal degree in co-relation 63935. Up to 10894 conditions per place. [2023-08-25 17:18:21,755 INFO L140 encePairwiseOnDemand]: 174/189 looper letters, 416 selfloop transitions, 100 changer transitions 4/521 dead transitions. [2023-08-25 17:18:21,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 521 transitions, 5623 flow [2023-08-25 17:18:21,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 623 transitions. [2023-08-25 17:18:21,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493827160493827 [2023-08-25 17:18:21,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 623 transitions. [2023-08-25 17:18:21,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 623 transitions. [2023-08-25 17:18:21,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:21,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 623 transitions. [2023-08-25 17:18:21,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 17:18:21,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:21,759 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 17:18:21,759 INFO L175 Difference]: Start difference. First operand has 150 places, 284 transitions, 2403 flow. Second operand 6 states and 623 transitions. [2023-08-25 17:18:21,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 521 transitions, 5623 flow [2023-08-25 17:18:21,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 521 transitions, 5459 flow, removed 65 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:21,838 INFO L231 Difference]: Finished difference. Result has 159 places, 343 transitions, 3439 flow [2023-08-25 17:18:21,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3439, PETRI_PLACES=159, PETRI_TRANSITIONS=343} [2023-08-25 17:18:21,839 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2023-08-25 17:18:21,839 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 343 transitions, 3439 flow [2023-08-25 17:18:21,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:21,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:21,839 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 17:18:21,839 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:21,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash -778794686, now seen corresponding path program 1 times [2023-08-25 17:18:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:21,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295740763] [2023-08-25 17:18:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:21,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:22,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295740763] [2023-08-25 17:18:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295740763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440109153] [2023-08-25 17:18:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:22,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:22,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:22,390 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:18:22,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 17:18:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:22,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 17:18:22,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:22,751 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 [2023-08-25 17:18:22,779 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 18 [2023-08-25 17:18:22,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:18:22,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:18:22,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:22,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:22,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:22,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:22,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:18:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:22,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:23,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440109153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:23,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:23,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-25 17:18:23,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530553834] [2023-08-25 17:18:23,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:23,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-25 17:18:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:23,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-25 17:18:23,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2023-08-25 17:18:23,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 189 [2023-08-25 17:18:23,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 343 transitions, 3439 flow. Second operand has 31 states, 31 states have (on average 51.32258064516129) internal successors, (1591), 31 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states 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 17:18:23,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:23,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 189 [2023-08-25 17:18:23,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:29,399 INFO L124 PetriNetUnfolderBase]: 12664/25458 cut-off events. [2023-08-25 17:18:29,399 INFO L125 PetriNetUnfolderBase]: For 122991/122991 co-relation queries the response was YES. [2023-08-25 17:18:29,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130103 conditions, 25458 events. 12664/25458 cut-off events. For 122991/122991 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 199261 event pairs, 2040 based on Foata normal form. 88/25198 useless extension candidates. Maximal degree in co-relation 130011. Up to 10811 conditions per place. [2023-08-25 17:18:29,567 INFO L140 encePairwiseOnDemand]: 167/189 looper letters, 1326 selfloop transitions, 168 changer transitions 9/1503 dead transitions. [2023-08-25 17:18:29,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1503 transitions, 16750 flow [2023-08-25 17:18:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 17:18:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 17:18:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1355 transitions. [2023-08-25 17:18:29,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982951205173427 [2023-08-25 17:18:29,571 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1355 transitions. [2023-08-25 17:18:29,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1355 transitions. [2023-08-25 17:18:29,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:29,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1355 transitions. [2023-08-25 17:18:29,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 75.27777777777777) internal successors, (1355), 18 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states 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 17:18:29,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 17:18:29,576 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 17:18:29,576 INFO L175 Difference]: Start difference. First operand has 159 places, 343 transitions, 3439 flow. Second operand 18 states and 1355 transitions. [2023-08-25 17:18:29,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1503 transitions, 16750 flow [2023-08-25 17:18:29,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 1503 transitions, 16402 flow, removed 174 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:29,889 INFO L231 Difference]: Finished difference. Result has 189 places, 479 transitions, 5811 flow [2023-08-25 17:18:29,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5811, PETRI_PLACES=189, PETRI_TRANSITIONS=479} [2023-08-25 17:18:29,890 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 135 predicate places. [2023-08-25 17:18:29,890 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 479 transitions, 5811 flow [2023-08-25 17:18:29,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 51.32258064516129) internal successors, (1591), 31 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states 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 17:18:29,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:29,891 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 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, 1, 1, 1, 1, 1] [2023-08-25 17:18:29,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:30,095 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 [2023-08-25 17:18:30,095 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:30,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1649868107, now seen corresponding path program 1 times [2023-08-25 17:18:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935316148] [2023-08-25 17:18:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:30,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935316148] [2023-08-25 17:18:30,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935316148] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041659785] [2023-08-25 17:18:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:30,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:30,564 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) [2023-08-25 17:18:30,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 17:18:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:30,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 17:18:30,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:30,924 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 [2023-08-25 17:18:30,956 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 18 [2023-08-25 17:18:30,990 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:18:31,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:18:31,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:31,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:31,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:31,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:31,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:18:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:31,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:31,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041659785] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:31,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:31,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-25 17:18:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148950806] [2023-08-25 17:18:31,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:31,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-25 17:18:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-25 17:18:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-25 17:18:31,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-25 17:18:31,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 479 transitions, 5811 flow. Second operand has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 17:18:31,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:31,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-25 17:18:31,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:39,837 INFO L124 PetriNetUnfolderBase]: 13655/27440 cut-off events. [2023-08-25 17:18:39,837 INFO L125 PetriNetUnfolderBase]: For 179504/179504 co-relation queries the response was YES. [2023-08-25 17:18:40,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150921 conditions, 27440 events. 13655/27440 cut-off events. For 179504/179504 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 217454 event pairs, 2752 based on Foata normal form. 52/27144 useless extension candidates. Maximal degree in co-relation 150814. Up to 15917 conditions per place. [2023-08-25 17:18:40,220 INFO L140 encePairwiseOnDemand]: 168/189 looper letters, 1001 selfloop transitions, 181 changer transitions 2/1184 dead transitions. [2023-08-25 17:18:40,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1184 transitions, 14699 flow [2023-08-25 17:18:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 17:18:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 17:18:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1116 transitions. [2023-08-25 17:18:40,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473389355742297 [2023-08-25 17:18:40,223 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1116 transitions. [2023-08-25 17:18:40,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1116 transitions. [2023-08-25 17:18:40,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:40,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1116 transitions. [2023-08-25 17:18:40,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 65.6470588235294) internal successors, (1116), 17 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 17:18:40,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 189.0) internal successors, (3402), 18 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states 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 17:18:40,229 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 189.0) internal successors, (3402), 18 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states 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 17:18:40,229 INFO L175 Difference]: Start difference. First operand has 189 places, 479 transitions, 5811 flow. Second operand 17 states and 1116 transitions. [2023-08-25 17:18:40,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1184 transitions, 14699 flow [2023-08-25 17:18:40,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1184 transitions, 14634 flow, removed 32 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:40,995 INFO L231 Difference]: Finished difference. Result has 214 places, 617 transitions, 8337 flow [2023-08-25 17:18:40,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=5758, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8337, PETRI_PLACES=214, PETRI_TRANSITIONS=617} [2023-08-25 17:18:40,995 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2023-08-25 17:18:40,995 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 617 transitions, 8337 flow [2023-08-25 17:18:40,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 17:18:40,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:40,996 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:41,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:41,197 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 [2023-08-25 17:18:41,197 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:18:41,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:41,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1552358000, now seen corresponding path program 2 times [2023-08-25 17:18:41,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:41,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077646102] [2023-08-25 17:18:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:41,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077646102] [2023-08-25 17:18:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077646102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661730071] [2023-08-25 17:18:41,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:41,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:41,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:41,911 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) [2023-08-25 17:18:41,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 17:18:42,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:18:42,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:42,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-25 17:18:42,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:42,196 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 [2023-08-25 17:18:42,224 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 18 [2023-08-25 17:18:42,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:18:42,295 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:18:42,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:18:42,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:42,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:42,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:42,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:42,487 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:18:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:42,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:19:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:00,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661730071] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:19:00,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:19:00,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-08-25 17:19:00,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051938410] [2023-08-25 17:19:00,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:19:00,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 17:19:00,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:19:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 17:19:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=865, Unknown=6, NotChecked=0, Total=1056 [2023-08-25 17:19:00,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 189 [2023-08-25 17:19:00,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 617 transitions, 8337 flow. Second operand has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states 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 17:19:00,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:19:00,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 189 [2023-08-25 17:19:00,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:19:24,353 INFO L124 PetriNetUnfolderBase]: 27620/55449 cut-off events. [2023-08-25 17:19:24,353 INFO L125 PetriNetUnfolderBase]: For 407096/407096 co-relation queries the response was YES. [2023-08-25 17:19:24,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315747 conditions, 55449 events. 27620/55449 cut-off events. For 407096/407096 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 495108 event pairs, 3818 based on Foata normal form. 125/54672 useless extension candidates. Maximal degree in co-relation 315629. Up to 13100 conditions per place. [2023-08-25 17:19:25,129 INFO L140 encePairwiseOnDemand]: 166/189 looper letters, 2694 selfloop transitions, 572 changer transitions 17/3283 dead transitions. [2023-08-25 17:19:25,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 3283 transitions, 42314 flow [2023-08-25 17:19:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 17:19:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 17:19:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2566 transitions. [2023-08-25 17:19:25,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114157447490781 [2023-08-25 17:19:25,133 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2566 transitions. [2023-08-25 17:19:25,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2566 transitions. [2023-08-25 17:19:25,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:19:25,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2566 transitions. [2023-08-25 17:19:25,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 77.75757575757575) internal successors, (2566), 33 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states 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 17:19:25,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 189.0) internal successors, (6426), 34 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states 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 17:19:25,142 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 189.0) internal successors, (6426), 34 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states 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 17:19:25,142 INFO L175 Difference]: Start difference. First operand has 214 places, 617 transitions, 8337 flow. Second operand 33 states and 2566 transitions. [2023-08-25 17:19:25,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 3283 transitions, 42314 flow [2023-08-25 17:19:28,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 3283 transitions, 41982 flow, removed 128 selfloop flow, removed 2 redundant places. [2023-08-25 17:19:28,281 INFO L231 Difference]: Finished difference. Result has 267 places, 1063 transitions, 17886 flow [2023-08-25 17:19:28,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=8209, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17886, PETRI_PLACES=267, PETRI_TRANSITIONS=1063} [2023-08-25 17:19:28,282 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2023-08-25 17:19:28,282 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 1063 transitions, 17886 flow [2023-08-25 17:19:28,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states 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 17:19:28,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:19:28,283 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 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, 1, 1, 1, 1, 1] [2023-08-25 17:19:28,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 17:19:28,483 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 [2023-08-25 17:19:28,483 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:19:28,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:19:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash -127161741, now seen corresponding path program 2 times [2023-08-25 17:19:28,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:19:28,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939727694] [2023-08-25 17:19:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:19:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:19:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:19:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:28,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:19:28,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939727694] [2023-08-25 17:19:28,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939727694] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:19:28,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636020269] [2023-08-25 17:19:28,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:19:28,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:19:28,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:19:28,857 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) [2023-08-25 17:19:28,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 17:19:28,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:19:28,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:19:28,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 17:19:28,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:19:29,187 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 [2023-08-25 17:19:29,217 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 18 [2023-08-25 17:19:29,253 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:19:29,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:19:29,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:29,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:29,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:29,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:29,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:19:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:29,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:19:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:37,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636020269] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:19:37,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:19:37,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-25 17:19:37,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115000943] [2023-08-25 17:19:37,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:19:37,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-25 17:19:37,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:19:37,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-25 17:19:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=741, Unknown=3, NotChecked=0, Total=930 [2023-08-25 17:19:37,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-25 17:19:37,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 1063 transitions, 17886 flow. Second operand has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 17:19:37,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:19:37,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-25 17:19:37,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:19:58,665 INFO L124 PetriNetUnfolderBase]: 28861/57931 cut-off events. [2023-08-25 17:19:58,665 INFO L125 PetriNetUnfolderBase]: For 586271/586271 co-relation queries the response was YES. [2023-08-25 17:19:59,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359245 conditions, 57931 events. 28861/57931 cut-off events. For 586271/586271 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 519941 event pairs, 7088 based on Foata normal form. 26/57055 useless extension candidates. Maximal degree in co-relation 359103. Up to 30563 conditions per place. [2023-08-25 17:19:59,643 INFO L140 encePairwiseOnDemand]: 168/189 looper letters, 1375 selfloop transitions, 335 changer transitions 1/1711 dead transitions. [2023-08-25 17:19:59,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1711 transitions, 28445 flow [2023-08-25 17:19:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 17:19:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 17:19:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1058 transitions. [2023-08-25 17:19:59,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3498677248677249 [2023-08-25 17:19:59,645 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1058 transitions. [2023-08-25 17:19:59,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1058 transitions. [2023-08-25 17:19:59,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:19:59,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1058 transitions. [2023-08-25 17:19:59,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.125) internal successors, (1058), 16 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states 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 17:19:59,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 189.0) internal successors, (3213), 17 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states 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 17:19:59,648 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 189.0) internal successors, (3213), 17 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states 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 17:19:59,648 INFO L175 Difference]: Start difference. First operand has 267 places, 1063 transitions, 17886 flow. Second operand 16 states and 1058 transitions. [2023-08-25 17:19:59,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1711 transitions, 28445 flow [2023-08-25 17:20:05,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1711 transitions, 27865 flow, removed 190 selfloop flow, removed 5 redundant places. [2023-08-25 17:20:05,587 INFO L231 Difference]: Finished difference. Result has 286 places, 1193 transitions, 20693 flow [2023-08-25 17:20:05,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=17429, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20693, PETRI_PLACES=286, PETRI_TRANSITIONS=1193} [2023-08-25 17:20:05,588 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2023-08-25 17:20:05,588 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 1193 transitions, 20693 flow [2023-08-25 17:20:05,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 17:20:05,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:20:05,588 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:20:05,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 17:20:05,790 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 [2023-08-25 17:20:05,790 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:20:05,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:20:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1057352890, now seen corresponding path program 3 times [2023-08-25 17:20:05,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:20:05,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928637345] [2023-08-25 17:20:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:20:05,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:20:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:20:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:20:06,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:20:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928637345] [2023-08-25 17:20:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928637345] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:20:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410184189] [2023-08-25 17:20:06,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 17:20:06,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:20:06,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:20:06,224 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) [2023-08-25 17:20:06,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 17:20:06,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 17:20:06,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:20:06,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-25 17:20:06,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:20:06,456 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 13 treesize of output 9 [2023-08-25 17:20:06,588 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 17:20:06,589 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 17 treesize of output 11 [2023-08-25 17:20:06,625 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 [2023-08-25 17:20:06,654 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 18 [2023-08-25 17:20:06,697 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:20:06,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:20:06,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:20:06,793 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:20:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-25 17:20:06,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:20:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-25 17:20:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410184189] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 17:20:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 17:20:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 27 [2023-08-25 17:20:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499401006] [2023-08-25 17:20:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:20:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-25 17:20:07,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:20:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-25 17:20:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2023-08-25 17:20:07,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 189 [2023-08-25 17:20:07,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 1193 transitions, 20693 flow. Second operand has 10 states, 10 states have (on average 58.6) internal successors, (586), 10 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 17:20:07,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:20:07,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 189 [2023-08-25 17:20:07,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:20:43,556 INFO L124 PetriNetUnfolderBase]: 45253/90755 cut-off events. [2023-08-25 17:20:43,556 INFO L125 PetriNetUnfolderBase]: For 972011/972011 co-relation queries the response was YES. [2023-08-25 17:20:45,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577121 conditions, 90755 events. 45253/90755 cut-off events. For 972011/972011 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 871932 event pairs, 4416 based on Foata normal form. 44/89495 useless extension candidates. Maximal degree in co-relation 576970. Up to 31832 conditions per place. [2023-08-25 17:20:45,671 INFO L140 encePairwiseOnDemand]: 170/189 looper letters, 1771 selfloop transitions, 1466 changer transitions 6/3243 dead transitions. [2023-08-25 17:20:45,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 3243 transitions, 58181 flow [2023-08-25 17:20:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 17:20:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 17:20:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1398 transitions. [2023-08-25 17:20:45,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4109347442680776 [2023-08-25 17:20:45,673 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1398 transitions. [2023-08-25 17:20:45,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1398 transitions. [2023-08-25 17:20:45,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:20:45,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1398 transitions. [2023-08-25 17:20:45,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 77.66666666666667) internal successors, (1398), 18 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states 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 17:20:45,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 17:20:45,677 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 17:20:45,677 INFO L175 Difference]: Start difference. First operand has 286 places, 1193 transitions, 20693 flow. Second operand 18 states and 1398 transitions. [2023-08-25 17:20:45,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 3243 transitions, 58181 flow [2023-08-25 17:20:58,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 3243 transitions, 57278 flow, removed 272 selfloop flow, removed 5 redundant places. [2023-08-25 17:20:58,666 INFO L231 Difference]: Finished difference. Result has 313 places, 2182 transitions, 44241 flow [2023-08-25 17:20:58,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=20342, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=44241, PETRI_PLACES=313, PETRI_TRANSITIONS=2182} [2023-08-25 17:20:58,667 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2023-08-25 17:20:58,667 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 2182 transitions, 44241 flow [2023-08-25 17:20:58,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.6) internal successors, (586), 10 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 17:20:58,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:20:58,667 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 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, 1, 1, 1, 1, 1] [2023-08-25 17:20:58,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 17:20:58,867 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 [2023-08-25 17:20:58,867 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:20:58,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:20:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1822754385, now seen corresponding path program 3 times [2023-08-25 17:20:58,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:20:58,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123205522] [2023-08-25 17:20:58,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:20:58,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:20:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:20:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:20:59,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:20:59,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123205522] [2023-08-25 17:20:59,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123205522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:20:59,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106644374] [2023-08-25 17:20:59,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 17:20:59,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:20:59,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:20:59,225 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) [2023-08-25 17:20:59,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 17:20:59,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 17:20:59,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:20:59,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-25 17:20:59,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:20:59,581 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 [2023-08-25 17:20:59,609 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 18 [2023-08-25 17:20:59,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:20:59,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:20:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:20:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:20:59,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:20:59,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:20:59,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:20:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:20:59,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:21:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:21:12,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106644374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:21:12,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:21:12,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-25 17:21:12,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339611170] [2023-08-25 17:21:12,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:21:12,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:21:12,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:21:12,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:21:12,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=813, Unknown=6, NotChecked=0, Total=992 [2023-08-25 17:21:12,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-25 17:21:12,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 2182 transitions, 44241 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 17:21:12,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:21:12,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-25 17:21:12,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:22:20,913 INFO L124 PetriNetUnfolderBase]: 61231/122839 cut-off events. [2023-08-25 17:22:20,913 INFO L125 PetriNetUnfolderBase]: For 1678445/1678445 co-relation queries the response was YES. [2023-08-25 17:22:23,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844144 conditions, 122839 events. 61231/122839 cut-off events. For 1678445/1678445 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 1170932 event pairs, 16288 based on Foata normal form. 50/121221 useless extension candidates. Maximal degree in co-relation 843980. Up to 75940 conditions per place. [2023-08-25 17:22:24,238 INFO L140 encePairwiseOnDemand]: 167/189 looper letters, 3488 selfloop transitions, 1119 changer transitions 0/4607 dead transitions. [2023-08-25 17:22:24,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 4607 transitions, 90769 flow [2023-08-25 17:22:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 17:22:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 17:22:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1964 transitions. [2023-08-25 17:22:24,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3583287721218756 [2023-08-25 17:22:24,241 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1964 transitions. [2023-08-25 17:22:24,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1964 transitions. [2023-08-25 17:22:24,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:22:24,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1964 transitions. [2023-08-25 17:22:24,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 67.72413793103448) internal successors, (1964), 29 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states 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 17:22:24,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 189.0) internal successors, (5670), 30 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states 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 17:22:24,247 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 189.0) internal successors, (5670), 30 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states 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 17:22:24,247 INFO L175 Difference]: Start difference. First operand has 313 places, 2182 transitions, 44241 flow. Second operand 29 states and 1964 transitions. [2023-08-25 17:22:24,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 4607 transitions, 90769 flow [2023-08-25 17:22:50,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 4607 transitions, 88516 flow, removed 1125 selfloop flow, removed 1 redundant places. [2023-08-25 17:22:50,670 INFO L231 Difference]: Finished difference. Result has 361 places, 2876 transitions, 61343 flow [2023-08-25 17:22:50,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=43376, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=61343, PETRI_PLACES=361, PETRI_TRANSITIONS=2876} [2023-08-25 17:22:50,672 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 307 predicate places. [2023-08-25 17:22:50,672 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 2876 transitions, 61343 flow [2023-08-25 17:22:50,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 17:22:50,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:22:50,672 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 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, 1, 1, 1, 1, 1] [2023-08-25 17:22:50,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-25 17:22:50,876 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 [2023-08-25 17:22:50,877 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:22:50,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:22:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1897455422, now seen corresponding path program 1 times [2023-08-25 17:22:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:22:50,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148516853] [2023-08-25 17:22:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:22:50,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:22:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:22:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:51,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:22:51,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148516853] [2023-08-25 17:22:51,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148516853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:22:51,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649867387] [2023-08-25 17:22:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:22:51,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:22:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:22:51,236 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) [2023-08-25 17:22:51,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 17:22:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:22:51,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 17:22:51,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:22:51,619 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 [2023-08-25 17:22:51,650 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 18 [2023-08-25 17:22:51,680 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:22:51,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:22:51,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:51,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:51,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:51,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:51,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:22:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:51,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:22:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:58,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649867387] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:22:58,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:22:58,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-25 17:22:58,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902698895] [2023-08-25 17:22:58,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:22:58,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:22:58,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:22:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:22:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2023-08-25 17:22:58,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-25 17:22:58,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 2876 transitions, 61343 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 17:22:58,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:22:58,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-25 17:22:58,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:24:43,700 INFO L124 PetriNetUnfolderBase]: 72973/146450 cut-off events. [2023-08-25 17:24:43,701 INFO L125 PetriNetUnfolderBase]: For 2159642/2159642 co-relation queries the response was YES. [2023-08-25 17:24:47,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047944 conditions, 146450 events. 72973/146450 cut-off events. For 2159642/2159642 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 1443352 event pairs, 17253 based on Foata normal form. 143/144398 useless extension candidates. Maximal degree in co-relation 1047758. Up to 79209 conditions per place. [2023-08-25 17:24:48,024 INFO L140 encePairwiseOnDemand]: 159/189 looper letters, 5079 selfloop transitions, 658 changer transitions 17/5754 dead transitions. [2023-08-25 17:24:48,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 5754 transitions, 116353 flow [2023-08-25 17:24:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 17:24:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 17:24:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2214 transitions. [2023-08-25 17:24:48,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2023-08-25 17:24:48,027 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2214 transitions. [2023-08-25 17:24:48,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2214 transitions. [2023-08-25 17:24:48,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:24:48,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2214 transitions. [2023-08-25 17:24:48,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 76.34482758620689) internal successors, (2214), 29 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states 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 17:24:48,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 189.0) internal successors, (5670), 30 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states 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 17:24:48,034 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 189.0) internal successors, (5670), 30 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states 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 17:24:48,034 INFO L175 Difference]: Start difference. First operand has 361 places, 2876 transitions, 61343 flow. Second operand 29 states and 2214 transitions. [2023-08-25 17:24:48,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 5754 transitions, 116353 flow [2023-08-25 17:25:35,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 5754 transitions, 114607 flow, removed 790 selfloop flow, removed 2 redundant places. [2023-08-25 17:25:35,637 INFO L231 Difference]: Finished difference. Result has 410 places, 3408 transitions, 71467 flow [2023-08-25 17:25:35,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=59987, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=71467, PETRI_PLACES=410, PETRI_TRANSITIONS=3408} [2023-08-25 17:25:35,639 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 356 predicate places. [2023-08-25 17:25:35,639 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 3408 transitions, 71467 flow [2023-08-25 17:25:35,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 17:25:35,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:35,639 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:35,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 17:25:35,839 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 [2023-08-25 17:25:35,840 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:25:35,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1993949795, now seen corresponding path program 1 times [2023-08-25 17:25:35,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:35,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734214727] [2023-08-25 17:25:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:25:36,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:25:36,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734214727] [2023-08-25 17:25:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734214727] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:25:36,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178967081] [2023-08-25 17:25:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:36,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:25:36,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:25:36,281 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) [2023-08-25 17:25:36,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 17:25:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:36,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 17:25:36,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:25:36,707 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 [2023-08-25 17:25:36,736 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 21 treesize of output 20 [2023-08-25 17:25:36,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-25 17:25:36,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-25 17:25:36,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:25:36,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:25:36,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:25:36,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:25:36,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-08-25 17:25:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:25:36,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:25:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:25:37,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178967081] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:25:37,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:25:37,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-25 17:25:37,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652808320] [2023-08-25 17:25:37,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:25:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:25:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:25:37,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:25:37,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2023-08-25 17:25:37,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-25 17:25:37,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 3408 transitions, 71467 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 17:25:37,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:25:37,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-25 17:25:37,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:27:47,102 INFO L124 PetriNetUnfolderBase]: 73595/147749 cut-off events. [2023-08-25 17:27:47,102 INFO L125 PetriNetUnfolderBase]: For 2448522/2448522 co-relation queries the response was YES. [2023-08-25 17:27:51,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128509 conditions, 147749 events. 73595/147749 cut-off events. For 2448522/2448522 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 1457012 event pairs, 19455 based on Foata normal form. 152/145601 useless extension candidates. Maximal degree in co-relation 1128300. Up to 72953 conditions per place. [2023-08-25 17:27:52,275 INFO L140 encePairwiseOnDemand]: 168/189 looper letters, 4828 selfloop transitions, 1661 changer transitions 7/6496 dead transitions. [2023-08-25 17:27:52,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 6496 transitions, 129805 flow [2023-08-25 17:27:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-25 17:27:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-25 17:27:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3246 transitions. [2023-08-25 17:27:52,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367569249922191 [2023-08-25 17:27:52,278 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3246 transitions. [2023-08-25 17:27:52,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3246 transitions. [2023-08-25 17:27:52,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:27:52,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3246 transitions. [2023-08-25 17:27:52,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 63.64705882352941) internal successors, (3246), 51 states have internal predecessors, (3246), 0 states have call successors, (0), 0 states 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 17:27:52,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 189.0) internal successors, (9828), 52 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states 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 17:27:52,288 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 189.0) internal successors, (9828), 52 states have internal predecessors, (9828), 0 states have call successors, (0), 0 states 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 17:27:52,289 INFO L175 Difference]: Start difference. First operand has 410 places, 3408 transitions, 71467 flow. Second operand 51 states and 3246 transitions. [2023-08-25 17:27:52,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 6496 transitions, 129805 flow [2023-08-25 17:28:54,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 6496 transitions, 128236 flow, removed 710 selfloop flow, removed 2 redundant places. [2023-08-25 17:28:54,268 INFO L231 Difference]: Finished difference. Result has 490 places, 4016 transitions, 88259 flow [2023-08-25 17:28:54,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=70318, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1087, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=88259, PETRI_PLACES=490, PETRI_TRANSITIONS=4016} [2023-08-25 17:28:54,271 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 436 predicate places. [2023-08-25 17:28:54,271 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 4016 transitions, 88259 flow [2023-08-25 17:28:54,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 17:28:54,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:28:54,271 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 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, 1, 1, 1, 1, 1] [2023-08-25 17:28:54,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 17:28:54,472 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 [2023-08-25 17:28:54,472 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-25 17:28:54,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:28:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash -922558283, now seen corresponding path program 4 times [2023-08-25 17:28:54,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:28:54,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880597291] [2023-08-25 17:28:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:28:54,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:28:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:28:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:28:54,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:28:54,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880597291] [2023-08-25 17:28:54,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880597291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:28:54,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554160987] [2023-08-25 17:28:54,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 17:28:54,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:28:54,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:28:54,833 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) [2023-08-25 17:28:54,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 17:28:55,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 17:28:55,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:28:55,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 17:28:55,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:28:55,270 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 [2023-08-25 17:28:55,299 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 18 [2023-08-25 17:28:55,332 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:28:55,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:28:55,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:28:55,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:28:55,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:28:55,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:28:55,464 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:28:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:28:55,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:29:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:29:07,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554160987] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:29:07,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:29:07,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-25 17:29:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031679314] [2023-08-25 17:29:07,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:29:07,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:29:07,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:29:07,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:29:07,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=812, Unknown=4, NotChecked=0, Total=992 [2023-08-25 17:29:07,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 189 [2023-08-25 17:29:07,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 4016 transitions, 88259 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states 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 17:29:07,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:29:07,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 189 [2023-08-25 17:29:07,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-25 17:31:11,411 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 17:31:11,411 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 17:31:12,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 17:31:12,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-25 17:31:15,587 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 9 remaining) [2023-08-25 17:31:15,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-25 17:31:15,588 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-25 17:31:15,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-08-25 17:31:15,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-08-25 17:31:15,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-08-25 17:31:15,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-25 17:31:15,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-08-25 17:31:15,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-08-25 17:31:15,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-08-25 17:31:15,589 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-08-25 17:31:15,589 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:31:15,592 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 17:31:15,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 17:31:15,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:31:15 BasicIcfg [2023-08-25 17:31:15,595 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 17:31:15,595 INFO L158 Benchmark]: Toolchain (without parser) took 791456.16ms. Allocated memory was 385.9MB in the beginning and 11.0GB in the end (delta: 10.6GB). Free memory was 360.2MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2023-08-25 17:31:15,595 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 385.9MB. Free memory was 363.6MB in the beginning and 363.4MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:31:15,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.88ms. Allocated memory is still 385.9MB. Free memory was 360.2MB in the beginning and 332.1MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 17:31:15,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.88ms. Allocated memory is still 385.9MB. Free memory was 332.1MB in the beginning and 329.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:31:15,596 INFO L158 Benchmark]: Boogie Preprocessor took 23.04ms. Allocated memory is still 385.9MB. Free memory was 329.6MB in the beginning and 327.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:31:15,596 INFO L158 Benchmark]: RCFGBuilder took 387.69ms. Allocated memory is still 385.9MB. Free memory was 327.5MB in the beginning and 309.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 17:31:15,596 INFO L158 Benchmark]: TraceAbstraction took 790607.38ms. Allocated memory was 385.9MB in the beginning and 11.0GB in the end (delta: 10.6GB). Free memory was 308.6MB in the beginning and 5.9GB in the end (delta: -5.6GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2023-08-25 17:31:15,597 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 385.9MB. Free memory was 363.6MB in the beginning and 363.4MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 398.88ms. Allocated memory is still 385.9MB. Free memory was 360.2MB in the beginning and 332.1MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.88ms. Allocated memory is still 385.9MB. Free memory was 332.1MB in the beginning and 329.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.04ms. Allocated memory is still 385.9MB. Free memory was 329.6MB in the beginning and 327.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 387.69ms. Allocated memory is still 385.9MB. Free memory was 327.5MB in the beginning and 309.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 790607.38ms. Allocated memory was 385.9MB in the beginning and 11.0GB in the end (delta: 10.6GB). Free memory was 308.6MB in the beginning and 5.9GB in the end (delta: -5.6GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 117 PlacesBefore, 54 PlacesAfterwards, 119 TransitionsBefore, 53 TransitionsAfterwards, 4366 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 69 TotalNumberOfCompositions, 13471 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3658, independent: 3253, independent conditional: 0, independent unconditional: 3253, dependent: 405, dependent conditional: 0, dependent unconditional: 405, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1946, independent: 1888, independent conditional: 0, independent unconditional: 1888, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3658, independent: 1365, independent conditional: 0, independent unconditional: 1365, dependent: 347, dependent conditional: 0, dependent unconditional: 347, unknown: 1946, unknown conditional: 0, unknown unconditional: 1946] , Statistics on independence cache: Total cache size (in pairs): 227, Positive cache size: 184, Positive conditional cache size: 0, Positive unconditional cache size: 184, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 923]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 940]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 923]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 940]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 937]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 923]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 923]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 152 locations, 9 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: 790.5s, OverallIterations: 23, TraceHistogramMax: 10, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 712.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7133 SdHoareTripleChecker+Valid, 36.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7133 mSDsluCounter, 3082 SdHoareTripleChecker+Invalid, 32.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2456 mSDsCounter, 1291 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32241 IncrementalHoareTripleChecker+Invalid, 33532 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1291 mSolverCounterUnsat, 626 mSDtfsCounter, 32241 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1437 GetRequests, 883 SyntacticMatches, 6 SemanticMatches, 548 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7122 ImplicationChecksByTransitivity, 67.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88259occurred in iteration=22, InterpolantAutomatonStates: 300, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 70.3s InterpolantComputationTime, 1352 NumberOfCodeBlocks, 1296 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1765 ConstructedInterpolants, 52 QuantifiedInterpolants, 22797 SizeOfPredicates, 161 NumberOfNonLiveVariables, 3794 ConjunctsInSsa, 558 ConjunctsInUnsatCore, 53 InterpolantComputations, 12 PerfectInterpolantSequences, 2308/2540 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