/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:53:17,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:53:17,158 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 [2023-08-23 23:53:17,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:53:17,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:53:17,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:53:17,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:53:17,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:53:17,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:53:17,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:53:17,198 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:53:17,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:53:17,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:53:17,200 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:53:17,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:53:17,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:53:17,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:53:17,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:53:17,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:53:17,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:53:17,201 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:53:17,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:53:17,202 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:53:17,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:53:17,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:53:17,203 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:53:17,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:53:17,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:53:17,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:53:17,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:53:17,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:53:17,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:53:17,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:53:17,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:53:17,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:53:17,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:53:17,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:53:17,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:53:17,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:53:17,559 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:53:17,561 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:53:17,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-23 23:53:18,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:53:18,967 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:53:18,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-23 23:53:18,983 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/451d8cbf3/1f971f3020854546ba5e9c079dabe812/FLAG01f33d811 [2023-08-23 23:53:18,997 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/451d8cbf3/1f971f3020854546ba5e9c079dabe812 [2023-08-23 23:53:18,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:53:19,000 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:53:19,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:53:19,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:53:19,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:53:19,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:53:18" (1/1) ... [2023-08-23 23:53:19,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f0379a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19, skipping insertion in model container [2023-08-23 23:53:19,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:53:18" (1/1) ... [2023-08-23 23:53:19,050 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:53:19,335 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_04-munge_racefree.i[30176,30189] [2023-08-23 23:53:19,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:53:19,367 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:53:19,392 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-23 23:53:19,394 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-23 23:53:19,409 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_04-munge_racefree.i[30176,30189] [2023-08-23 23:53:19,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:53:19,458 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:53:19,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19 WrapperNode [2023-08-23 23:53:19,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:53:19,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:53:19,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:53:19,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:53:19,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,506 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 206 [2023-08-23 23:53:19,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:53:19,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:53:19,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:53:19,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:53:19,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:53:19,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:53:19,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:53:19,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:53:19,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (1/1) ... [2023-08-23 23:53:19,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:53:19,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:53:19,566 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) [2023-08-23 23:53:19,581 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 [2023-08-23 23:53:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-23 23:53:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-23 23:53:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-23 23:53:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:53:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-23 23:53:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:53:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:53:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-23 23:53:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-23 23:53:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:53:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:53:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:53:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:53:19,597 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:53:19,717 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:53:19,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:53:19,962 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:53:19,969 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:53:19,969 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-23 23:53:19,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:53:19 BoogieIcfgContainer [2023-08-23 23:53:19,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:53:19,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:53:19,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:53:19,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:53:19,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:53:18" (1/3) ... [2023-08-23 23:53:19,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26701629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:53:19, skipping insertion in model container [2023-08-23 23:53:19,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:53:19" (2/3) ... [2023-08-23 23:53:19,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26701629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:53:19, skipping insertion in model container [2023-08-23 23:53:19,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:53:19" (3/3) ... [2023-08-23 23:53:19,978 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-23 23:53:19,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:53:19,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-23 23:53:19,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:53:20,123 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-23 23:53:20,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 204 transitions, 430 flow [2023-08-23 23:53:20,282 INFO L124 PetriNetUnfolderBase]: 58/372 cut-off events. [2023-08-23 23:53:20,284 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-23 23:53:20,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 372 events. 58/372 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1554 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 196. Up to 8 conditions per place. [2023-08-23 23:53:20,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 204 transitions, 430 flow [2023-08-23 23:53:20,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 204 transitions, 430 flow [2023-08-23 23:53:20,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:53:20,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 204 transitions, 430 flow [2023-08-23 23:53:20,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 204 transitions, 430 flow [2023-08-23 23:53:20,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 204 transitions, 430 flow [2023-08-23 23:53:20,369 INFO L124 PetriNetUnfolderBase]: 58/372 cut-off events. [2023-08-23 23:53:20,369 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-23 23:53:20,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 372 events. 58/372 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1554 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 196. Up to 8 conditions per place. [2023-08-23 23:53:20,380 INFO L119 LiptonReduction]: Number of co-enabled transitions 16632 [2023-08-23 23:53:23,816 INFO L134 LiptonReduction]: Checked pairs total: 28692 [2023-08-23 23:53:23,817 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-23 23:53:23,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:53:23,833 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;@1f7a96fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:53:23,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-23 23:53:23,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:53:23,837 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-23 23:53:23,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:53:23,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:53:23,838 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-23 23:53:23,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:53:23,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:53:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1528870253, now seen corresponding path program 1 times [2023-08-23 23:53:23,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:53:23,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907461049] [2023-08-23 23:53:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:53:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:53:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:53:23,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-23 23:53:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:53:24,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-23 23:53:24,039 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-23 23:53:24,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-23 23:53:24,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-23 23:53:24,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-23 23:53:24,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-23 23:53:24,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-23 23:53:24,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-23 23:53:24,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:53:24,044 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-23 23:53:24,050 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-23 23:53:24,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-23 23:53:24,110 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-23 23:53:24,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 318 transitions, 684 flow [2023-08-23 23:53:24,320 INFO L124 PetriNetUnfolderBase]: 197/1090 cut-off events. [2023-08-23 23:53:24,320 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-23 23:53:24,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 1090 events. 197/1090 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6379 event pairs, 1 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 667. Up to 32 conditions per place. [2023-08-23 23:53:24,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 318 transitions, 684 flow [2023-08-23 23:53:24,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 318 transitions, 684 flow [2023-08-23 23:53:24,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:53:24,348 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 318 transitions, 684 flow [2023-08-23 23:53:24,348 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 318 transitions, 684 flow [2023-08-23 23:53:24,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 318 transitions, 684 flow [2023-08-23 23:53:24,511 INFO L124 PetriNetUnfolderBase]: 197/1090 cut-off events. [2023-08-23 23:53:24,511 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-23 23:53:24,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 1090 events. 197/1090 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6379 event pairs, 1 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 667. Up to 32 conditions per place. [2023-08-23 23:53:24,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 58752 [2023-08-23 23:53:28,377 INFO L134 LiptonReduction]: Checked pairs total: 136501 [2023-08-23 23:53:28,377 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-08-23 23:53:28,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:53:28,380 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;@1f7a96fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:53:28,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-23 23:53:28,385 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:53:28,385 INFO L124 PetriNetUnfolderBase]: 7/42 cut-off events. [2023-08-23 23:53:28,385 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 23:53:28,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:53:28,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:53:28,386 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)] === [2023-08-23 23:53:28,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:53:28,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1289305928, now seen corresponding path program 1 times [2023-08-23 23:53:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:53:28,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358998011] [2023-08-23 23:53:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:53:28,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:53:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:53:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:53:28,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:53:28,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358998011] [2023-08-23 23:53:28,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358998011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:53:28,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:53:28,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:53:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457301512] [2023-08-23 23:53:28,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:53:28,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:53:28,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:53:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:53:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:53:28,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 531 [2023-08-23 23:53:28,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 149 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-08-23 23:53:28,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:53:28,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 531 [2023-08-23 23:53:28,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand