/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 06:58:20,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:58:20,285 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 06:58:20,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:58:20,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:58:20,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:58:20,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:58:20,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:58:20,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:58:20,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:58:20,327 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:58:20,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:58:20,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:58:20,329 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:58:20,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:58:20,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:58:20,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:58:20,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:58:20,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:58:20,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:58:20,330 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:58:20,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:58:20,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:58:20,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:58:20,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:58:20,332 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:58:20,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:58:20,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:58:20,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:58:20,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:58:20,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:58:20,334 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:58:20,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:58:20,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:58:20,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:58:20,334 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:58:20,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:58:20,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:58:20,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:58:20,645 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:58:20,646 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:58:20,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i [2023-08-26 06:58:21,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:58:22,173 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:58:22,173 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_01-idx_rc.i [2023-08-26 06:58:22,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbcdbe0e5/deab6f18ddfd4cf58ceab69edb29c881/FLAGa338a28a8 [2023-08-26 06:58:22,207 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbcdbe0e5/deab6f18ddfd4cf58ceab69edb29c881 [2023-08-26 06:58:22,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:58:22,214 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:58:22,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:58:22,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:58:22,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:58:22,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2974c75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22, skipping insertion in model container [2023-08-26 06:58:22,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,251 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:58:22,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:58:22,547 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:58:22,575 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 06:58:22,576 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 06:58:22,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:58:22,636 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:58:22,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22 WrapperNode [2023-08-26 06:58:22,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:58:22,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:58:22,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:58:22,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:58:22,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,683 INFO L138 Inliner]: procedures = 161, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-08-26 06:58:22,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:58:22,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:58:22,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:58:22,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:58:22,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:58:22,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:58:22,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:58:22,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:58:22,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (1/1) ... [2023-08-26 06:58:22,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:58:22,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:58:22,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 06:58:22,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 06:58:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:58:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:58:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:58:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:58:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 06:58:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 06:58:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:58:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:58:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:58:22,777 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 06:58:22,882 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:58:22,884 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:58:23,054 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:58:23,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:58:23,060 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-26 06:58:23,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:58:23 BoogieIcfgContainer [2023-08-26 06:58:23,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:58:23,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:58:23,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:58:23,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:58:23,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:58:22" (1/3) ... [2023-08-26 06:58:23,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4579d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:58:23, skipping insertion in model container [2023-08-26 06:58:23,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:58:22" (2/3) ... [2023-08-26 06:58:23,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4579d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:58:23, skipping insertion in model container [2023-08-26 06:58:23,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:58:23" (3/3) ... [2023-08-26 06:58:23,068 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_01-idx_rc.i [2023-08-26 06:58:23,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:58:23,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 06:58:23,082 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:58:23,142 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 06:58:23,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 129 flow [2023-08-26 06:58:23,226 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2023-08-26 06:58:23,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:23,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 2/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-08-26 06:58:23,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 129 flow [2023-08-26 06:58:23,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 61 transitions, 125 flow [2023-08-26 06:58:23,239 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:58:23,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 61 transitions, 125 flow [2023-08-26 06:58:23,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 61 transitions, 125 flow [2023-08-26 06:58:23,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 61 transitions, 125 flow [2023-08-26 06:58:23,270 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2023-08-26 06:58:23,271 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:23,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 2/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-08-26 06:58:23,272 INFO L119 LiptonReduction]: Number of co-enabled transitions 714 [2023-08-26 06:58:24,266 INFO L134 LiptonReduction]: Checked pairs total: 2275 [2023-08-26 06:58:24,266 INFO L136 LiptonReduction]: Total number of compositions: 38 [2023-08-26 06:58:24,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:58:24,284 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;@6517687, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:58:24,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 06:58:24,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:58:24,287 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-26 06:58:24,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:24,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:24,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 06:58:24,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:58:24,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2125407067, now seen corresponding path program 1 times [2023-08-26 06:58:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:24,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283203265] [2023-08-26 06:58:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:24,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:24,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:58:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283203265] [2023-08-26 06:58:24,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283203265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:58:24,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:58:24,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:58:24,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881174349] [2023-08-26 06:58:24,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:58:24,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:58:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:58:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:58:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:58:24,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 100 [2023-08-26 06:58:24,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:58:24,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 100 [2023-08-26 06:58:24,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:58:24,571 INFO L124 PetriNetUnfolderBase]: 21/75 cut-off events. [2023-08-26 06:58:24,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:24,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 75 events. 21/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 218 event pairs, 20 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 119. Up to 54 conditions per place. [2023-08-26 06:58:24,574 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 12 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-26 06:58:24,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 81 flow [2023-08-26 06:58:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:58:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:58:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2023-08-26 06:58:24,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.57 [2023-08-26 06:58:24,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2023-08-26 06:58:24,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2023-08-26 06:58:24,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:58:24,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2023-08-26 06:58:24,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,596 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 51 flow. Second operand 3 states and 171 transitions. [2023-08-26 06:58:24,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 81 flow [2023-08-26 06:58:24,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:58:24,599 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 62 flow [2023-08-26 06:58:24,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-26 06:58:24,604 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-26 06:58:24,604 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 62 flow [2023-08-26 06:58:24,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:24,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:24,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:58:24,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:58:24,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:24,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1411548373, now seen corresponding path program 1 times [2023-08-26 06:58:24,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:24,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066719101] [2023-08-26 06:58:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:24,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:24,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:58:24,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066719101] [2023-08-26 06:58:24,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066719101] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:58:24,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413302077] [2023-08-26 06:58:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:24,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:58:24,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:58:24,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 06:58:24,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 06:58:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:24,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:58:24,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:58:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 06:58:24,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:58:24,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413302077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:58:24,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:58:24,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 06:58:24,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760790269] [2023-08-26 06:58:24,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:58:24,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:58:24,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:58:24,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:58:24,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 06:58:24,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 100 [2023-08-26 06:58:24,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:58:24,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 100 [2023-08-26 06:58:24,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:58:24,958 INFO L124 PetriNetUnfolderBase]: 78/201 cut-off events. [2023-08-26 06:58:24,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:58:24,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 201 events. 78/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 850 event pairs, 34 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 382. Up to 112 conditions per place. [2023-08-26 06:58:24,961 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 31 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-08-26 06:58:24,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 166 flow [2023-08-26 06:58:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:58:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:58:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-08-26 06:58:24,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2023-08-26 06:58:24,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-08-26 06:58:24,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-08-26 06:58:24,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:58:24,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-08-26 06:58:24,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,974 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 62 flow. Second operand 3 states and 182 transitions. [2023-08-26 06:58:24,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 166 flow [2023-08-26 06:58:24,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 06:58:24,978 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 110 flow [2023-08-26 06:58:24,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-08-26 06:58:24,980 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-26 06:58:24,981 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 110 flow [2023-08-26 06:58:24,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:24,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:24,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:24,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 06:58:25,190 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 [2023-08-26 06:58:25,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:58:25,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1019312455, now seen corresponding path program 1 times [2023-08-26 06:58:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:25,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754404760] [2023-08-26 06:58:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:25,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:25,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:58:25,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754404760] [2023-08-26 06:58:25,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754404760] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:58:25,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116470067] [2023-08-26 06:58:25,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:25,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:58:25,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:58:25,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 06:58:25,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 06:58:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:25,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:58:25,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:58:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 06:58:25,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:58:25,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116470067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:58:25,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:58:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 06:58:25,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501093832] [2023-08-26 06:58:25,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:58:25,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:58:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:58:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:58:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 06:58:25,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 100 [2023-08-26 06:58:25,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:58:25,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 100 [2023-08-26 06:58:25,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:58:25,430 INFO L124 PetriNetUnfolderBase]: 83/207 cut-off events. [2023-08-26 06:58:25,430 INFO L125 PetriNetUnfolderBase]: For 94/100 co-relation queries the response was YES. [2023-08-26 06:58:25,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 207 events. 83/207 cut-off events. For 94/100 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 830 event pairs, 34 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 505. Up to 145 conditions per place. [2023-08-26 06:58:25,435 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 32 selfloop transitions, 7 changer transitions 2/44 dead transitions. [2023-08-26 06:58:25,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 236 flow [2023-08-26 06:58:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:58:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:58:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-08-26 06:58:25,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2023-08-26 06:58:25,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-08-26 06:58:25,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-08-26 06:58:25,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:58:25,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-08-26 06:58:25,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,441 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 110 flow. Second operand 3 states and 168 transitions. [2023-08-26 06:58:25,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 236 flow [2023-08-26 06:58:25,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:58:25,444 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 154 flow [2023-08-26 06:58:25,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-08-26 06:58:25,445 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-26 06:58:25,447 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 154 flow [2023-08-26 06:58:25,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:25,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:25,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 06:58:25,652 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 [2023-08-26 06:58:25,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:58:25,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 186233729, now seen corresponding path program 1 times [2023-08-26 06:58:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910987258] [2023-08-26 06:58:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:58:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910987258] [2023-08-26 06:58:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910987258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:58:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628776082] [2023-08-26 06:58:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:25,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:58:25,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:58:25,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 06:58:25,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 06:58:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:25,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:58:25,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:58:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 06:58:25,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 06:58:25,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628776082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:58:25,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 06:58:25,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 06:58:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895962413] [2023-08-26 06:58:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:58:25,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:58:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:58:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:58:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 06:58:25,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 100 [2023-08-26 06:58:25,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:58:25,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 100 [2023-08-26 06:58:25,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:58:25,894 INFO L124 PetriNetUnfolderBase]: 81/213 cut-off events. [2023-08-26 06:58:25,894 INFO L125 PetriNetUnfolderBase]: For 145/151 co-relation queries the response was YES. [2023-08-26 06:58:25,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 213 events. 81/213 cut-off events. For 145/151 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 885 event pairs, 30 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 590. Up to 147 conditions per place. [2023-08-26 06:58:25,898 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 28 selfloop transitions, 7 changer transitions 12/50 dead transitions. [2023-08-26 06:58:25,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 310 flow [2023-08-26 06:58:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:58:25,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:58:25,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-08-26 06:58:25,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-08-26 06:58:25,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-08-26 06:58:25,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-08-26 06:58:25,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:58:25,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-08-26 06:58:25,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,906 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 154 flow. Second operand 3 states and 170 transitions. [2023-08-26 06:58:25,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 310 flow [2023-08-26 06:58:25,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:58:25,910 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 172 flow [2023-08-26 06:58:25,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-26 06:58:25,913 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-26 06:58:25,914 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 172 flow [2023-08-26 06:58:25,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:25,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:25,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:25,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 06:58:26,120 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 [2023-08-26 06:58:26,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:58:26,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1655172997, now seen corresponding path program 1 times [2023-08-26 06:58:26,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:26,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258294638] [2023-08-26 06:58:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:26,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:58:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258294638] [2023-08-26 06:58:26,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258294638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:58:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497874150] [2023-08-26 06:58:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:26,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:58:26,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:58:26,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 06:58:26,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 06:58:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:26,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:58:26,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:58:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:26,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:58:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:26,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497874150] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:58:26,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:58:26,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 06:58:26,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074498933] [2023-08-26 06:58:26,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:58:26,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 06:58:26,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:58:26,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 06:58:26,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 06:58:26,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 100 [2023-08-26 06:58:26,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:58:26,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 100 [2023-08-26 06:58:26,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:58:26,353 INFO L124 PetriNetUnfolderBase]: 31/142 cut-off events. [2023-08-26 06:58:26,353 INFO L125 PetriNetUnfolderBase]: For 168/179 co-relation queries the response was YES. [2023-08-26 06:58:26,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 142 events. 31/142 cut-off events. For 168/179 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 15 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 393. Up to 82 conditions per place. [2023-08-26 06:58:26,355 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 16 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-26 06:58:26,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 226 flow [2023-08-26 06:58:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:58:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:58:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 332 transitions. [2023-08-26 06:58:26,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2023-08-26 06:58:26,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 332 transitions. [2023-08-26 06:58:26,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 332 transitions. [2023-08-26 06:58:26,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:58:26,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 332 transitions. [2023-08-26 06:58:26,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.333333333333336) internal successors, (332), 6 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,359 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,359 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 172 flow. Second operand 6 states and 332 transitions. [2023-08-26 06:58:26,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 226 flow [2023-08-26 06:58:26,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:58:26,365 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 194 flow [2023-08-26 06:58:26,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-26 06:58:26,367 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-26 06:58:26,367 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 194 flow [2023-08-26 06:58:26,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:26,367 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:26,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 06:58:26,577 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 [2023-08-26 06:58:26,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:58:26,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash -453150747, now seen corresponding path program 2 times [2023-08-26 06:58:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523495628] [2023-08-26 06:58:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:58:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:58:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523495628] [2023-08-26 06:58:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523495628] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:58:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147484288] [2023-08-26 06:58:26,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 06:58:26,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:58:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:58:26,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 06:58:26,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 06:58:26,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 06:58:26,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 06:58:26,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 06:58:26,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:58:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:26,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:58:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:58:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147484288] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:58:26,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:58:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 06:58:26,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746874111] [2023-08-26 06:58:26,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:58:26,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 06:58:26,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:58:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 06:58:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 06:58:26,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 100 [2023-08-26 06:58:26,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 194 flow. Second operand has 13 states, 13 states have (on average 53.46153846153846) internal successors, (695), 13 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:58:26,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 100 [2023-08-26 06:58:26,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:58:26,922 INFO L124 PetriNetUnfolderBase]: 31/148 cut-off events. [2023-08-26 06:58:26,922 INFO L125 PetriNetUnfolderBase]: For 141/152 co-relation queries the response was YES. [2023-08-26 06:58:26,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 148 events. 31/148 cut-off events. For 141/152 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 15 based on Foata normal form. 6/146 useless extension candidates. Maximal degree in co-relation 374. Up to 82 conditions per place. [2023-08-26 06:58:26,923 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 16 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2023-08-26 06:58:26,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 284 flow [2023-08-26 06:58:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 06:58:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 06:58:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 653 transitions. [2023-08-26 06:58:26,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441666666666667 [2023-08-26 06:58:26,925 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 653 transitions. [2023-08-26 06:58:26,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 653 transitions. [2023-08-26 06:58:26,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:58:26,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 653 transitions. [2023-08-26 06:58:26,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 54.416666666666664) internal successors, (653), 12 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,930 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 100.0) internal successors, (1300), 13 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,930 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 194 flow. Second operand 12 states and 653 transitions. [2023-08-26 06:58:26,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 284 flow [2023-08-26 06:58:26,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 270 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 06:58:26,932 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 264 flow [2023-08-26 06:58:26,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-08-26 06:58:26,934 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-08-26 06:58:26,934 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 264 flow [2023-08-26 06:58:26,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.46153846153846) internal successors, (695), 13 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:58:26,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:58:26,935 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:58:26,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 06:58:27,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:58:27,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:58:27,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:58:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1102023461, now seen corresponding path program 3 times [2023-08-26 06:58:27,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:58:27,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33898266] [2023-08-26 06:58:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:58:27,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:58:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 06:58:27,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 06:58:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 06:58:27,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 06:58:27,229 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 06:58:27,230 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-26 06:58:27,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-26 06:58:27,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-08-26 06:58:27,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-26 06:58:27,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-26 06:58:27,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-26 06:58:27,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-26 06:58:27,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 06:58:27,235 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-08-26 06:58:27,240 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 06:58:27,240 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 06:58:27,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:58:27 BasicIcfg [2023-08-26 06:58:27,281 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 06:58:27,281 INFO L158 Benchmark]: Toolchain (without parser) took 5067.43ms. Allocated memory was 341.8MB in the beginning and 421.5MB in the end (delta: 79.7MB). Free memory was 317.0MB in the beginning and 361.4MB in the end (delta: -44.4MB). Peak memory consumption was 36.8MB. Max. memory is 16.0GB. [2023-08-26 06:58:27,281 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 341.8MB. Free memory is still 318.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:58:27,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.13ms. Allocated memory is still 341.8MB. Free memory was 317.0MB in the beginning and 298.0MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 06:58:27,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.19ms. Allocated memory is still 341.8MB. Free memory was 298.0MB in the beginning and 296.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 06:58:27,282 INFO L158 Benchmark]: Boogie Preprocessor took 44.56ms. Allocated memory is still 341.8MB. Free memory was 296.0MB in the beginning and 294.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:58:27,282 INFO L158 Benchmark]: RCFGBuilder took 331.89ms. Allocated memory is still 341.8MB. Free memory was 294.5MB in the beginning and 282.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 06:58:27,282 INFO L158 Benchmark]: TraceAbstraction took 4217.53ms. Allocated memory was 341.8MB in the beginning and 421.5MB in the end (delta: 79.7MB). Free memory was 281.8MB in the beginning and 361.4MB in the end (delta: -79.6MB). Peak memory consumption was 3.2MB. Max. memory is 16.0GB. [2023-08-26 06:58:27,285 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 341.8MB. Free memory is still 318.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 422.13ms. Allocated memory is still 341.8MB. Free memory was 317.0MB in the beginning and 298.0MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.19ms. Allocated memory is still 341.8MB. Free memory was 298.0MB in the beginning and 296.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.56ms. Allocated memory is still 341.8MB. Free memory was 296.0MB in the beginning and 294.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 331.89ms. Allocated memory is still 341.8MB. Free memory was 294.5MB in the beginning and 282.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4217.53ms. Allocated memory was 341.8MB in the beginning and 421.5MB in the end (delta: 79.7MB). Free memory was 281.8MB in the beginning and 361.4MB in the end (delta: -79.6MB). Peak memory consumption was 3.2MB. 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] - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 63 PlacesBefore, 27 PlacesAfterwards, 61 TransitionsBefore, 24 TransitionsAfterwards, 714 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 2275 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 991, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 387, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 991, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 387, unknown conditional: 0, unknown unconditional: 387] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 683]: Data race detected Data race detected The following path leads to a data race: [L679] 0 int data; [L680] 0 pthread_mutex_t m[10]; [L688] 0 int i = 0; VAL [data=0, i=0, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=1, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=2, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=3, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=4, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=5, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=6, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=7, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=8, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=9, m={1:0}] [L688] COND TRUE 0 i < 10 [L688] 0 i++ VAL [data=0, i=10, m={1:0}] [L688] COND FALSE 0 !(i < 10) [L690] 0 pthread_t id; [L691] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, data=0, id={2:0}, m={1:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L693] 0 data++ VAL [arg={0:0}, data++=0, data=1, id={2:0}, m={1:0}] [L683] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, m={1:0}] [L683] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, m={1:0}] Now there is a data race on ~data~0 between C: data++ [693] and C: data++ [683] - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 80 locations, 7 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: 4.1s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 245 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 23 mSDtfsCounter, 245 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=6, InterpolantAutomatonStates: 30, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 3/39 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 proved your program to be incorrect! [2023-08-26 06:58:27,332 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 Received shutdown request...