/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:37:18,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:37:18,876 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-SemanticLbe.epf [2023-11-17 11:37:18,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:37:18,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:37:18,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:37:18,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:37:18,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:37:18,911 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:37:18,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:37:18,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:37:18,916 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:37:18,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:37:18,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:37:18,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:37:18,918 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:37:18,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:37:18,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:37:18,918 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:37:18,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:37:18,919 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:37:18,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:37:18,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:37:18,920 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:37:18,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:37:18,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:37:18,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:37:18,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:37:18,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:37:18,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:37:18,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:37:18,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:37:18,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:37:19,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:37:19,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:37:19,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:37:19,213 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:37:19,213 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:37:19,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-11-17 11:37:20,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:37:20,796 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:37:20,797 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-11-17 11:37:20,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a2d82d94/98505d917b054b659de9d71079994b73/FLAG1dd45058a [2023-11-17 11:37:20,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a2d82d94/98505d917b054b659de9d71079994b73 [2023-11-17 11:37:20,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:37:20,839 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:37:20,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:37:20,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:37:20,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:37:20,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:37:20" (1/1) ... [2023-11-17 11:37:20,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380dacdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:20, skipping insertion in model container [2023-11-17 11:37:20,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:37:20" (1/1) ... [2023-11-17 11:37:20,900 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:37:21,223 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2023-11-17 11:37:21,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:37:21,269 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:37:21,297 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2023-11-17 11:37:21,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:37:21,342 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:37:21,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21 WrapperNode [2023-11-17 11:37:21,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:37:21,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:37:21,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:37:21,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:37:21,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,403 INFO L138 Inliner]: procedures = 173, calls = 56, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 247 [2023-11-17 11:37:21,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:37:21,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:37:21,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:37:21,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:37:21,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:37:21,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:37:21,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:37:21,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:37:21,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (1/1) ... [2023-11-17 11:37:21,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:37:21,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:37:21,482 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) [2023-11-17 11:37:21,485 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 [2023-11-17 11:37:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:37:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 11:37:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 11:37:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:37:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:37:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:37:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:37:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-17 11:37:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-17 11:37:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:37:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:37:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:37:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:37:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:37:21,507 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:37:21,688 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:37:21,690 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:37:22,153 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:37:22,347 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:37:22,347 INFO L307 CfgBuilder]: Removed 24 assume(true) statements. [2023-11-17 11:37:22,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:37:22 BoogieIcfgContainer [2023-11-17 11:37:22,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:37:22,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:37:22,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:37:22,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:37:22,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:37:20" (1/3) ... [2023-11-17 11:37:22,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b4082c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:37:22, skipping insertion in model container [2023-11-17 11:37:22,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:37:21" (2/3) ... [2023-11-17 11:37:22,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b4082c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:37:22, skipping insertion in model container [2023-11-17 11:37:22,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:37:22" (3/3) ... [2023-11-17 11:37:22,359 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-11-17 11:37:22,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:37:22,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:37:22,376 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:37:22,438 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 11:37:22,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 103 transitions, 226 flow [2023-11-17 11:37:22,529 INFO L124 PetriNetUnfolderBase]: 44/175 cut-off events. [2023-11-17 11:37:22,533 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 11:37:22,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 175 events. 44/175 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 808 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2023-11-17 11:37:22,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 103 transitions, 226 flow [2023-11-17 11:37:22,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 103 transitions, 226 flow [2023-11-17 11:37:22,548 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:37:22,559 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 103 transitions, 226 flow [2023-11-17 11:37:22,561 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 103 transitions, 226 flow [2023-11-17 11:37:22,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 103 transitions, 226 flow [2023-11-17 11:37:22,611 INFO L124 PetriNetUnfolderBase]: 44/175 cut-off events. [2023-11-17 11:37:22,612 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 11:37:22,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 175 events. 44/175 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 808 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 108. Up to 8 conditions per place. [2023-11-17 11:37:22,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 5740 [2023-11-17 11:37:23,870 INFO L134 LiptonReduction]: Checked pairs total: 13916 [2023-11-17 11:37:23,870 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-11-17 11:37:23,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:37:23,889 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=LoopHeads, 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;@5dbb9a6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:37:23,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 11:37:23,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:37:23,893 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-11-17 11:37:23,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:37:23,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:37:23,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-17 11:37:23,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-17 11:37:23,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:37:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1523790596, now seen corresponding path program 1 times [2023-11-17 11:37:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:37:23,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182838471] [2023-11-17 11:37:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:37:23,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:37:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:37:24,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:37:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:37:24,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:37:24,081 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:37:24,082 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-17 11:37:24,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 11:37:24,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 11:37:24,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-17 11:37:24,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 11:37:24,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 11:37:24,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:37:24,085 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:37:24,091 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 11:37:24,092 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 11:37:24,147 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-17 11:37:24,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 191 transitions, 426 flow [2023-11-17 11:37:24,221 INFO L124 PetriNetUnfolderBase]: 153/531 cut-off events. [2023-11-17 11:37:24,221 INFO L125 PetriNetUnfolderBase]: For 72/80 co-relation queries the response was YES. [2023-11-17 11:37:24,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 531 events. 153/531 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3308 event pairs, 2 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 342. Up to 32 conditions per place. [2023-11-17 11:37:24,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 191 transitions, 426 flow [2023-11-17 11:37:24,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 191 transitions, 426 flow [2023-11-17 11:37:24,243 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:37:24,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 191 transitions, 426 flow [2023-11-17 11:37:24,243 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 191 transitions, 426 flow [2023-11-17 11:37:24,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 191 transitions, 426 flow [2023-11-17 11:37:24,312 INFO L124 PetriNetUnfolderBase]: 153/531 cut-off events. [2023-11-17 11:37:24,313 INFO L125 PetriNetUnfolderBase]: For 72/80 co-relation queries the response was YES. [2023-11-17 11:37:24,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 531 events. 153/531 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3308 event pairs, 2 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 342. Up to 32 conditions per place. [2023-11-17 11:37:24,346 INFO L119 LiptonReduction]: Number of co-enabled transitions 26568 [2023-11-17 11:37:26,643 INFO L134 LiptonReduction]: Checked pairs total: 68189 [2023-11-17 11:37:26,644 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-11-17 11:37:26,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:37:26,652 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=LoopHeads, 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;@5dbb9a6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:37:26,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-17 11:37:26,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:37:26,659 INFO L124 PetriNetUnfolderBase]: 9/48 cut-off events. [2023-11-17 11:37:26,660 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:37:26,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:37:26,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:37:26,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 11:37:26,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:37:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1952160683, now seen corresponding path program 1 times [2023-11-17 11:37:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:37:26,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803332164] [2023-11-17 11:37:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:37:26,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:37:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:37:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:37:27,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:37:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803332164] [2023-11-17 11:37:27,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803332164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:37:27,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:37:27,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:37:27,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555748234] [2023-11-17 11:37:27,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:37:27,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:37:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:37:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:37:27,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:37:27,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 310 [2023-11-17 11:37:27,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 137 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:37:27,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:37:27,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 310 [2023-11-17 11:37:27,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand