/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:19:45,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:19:45,171 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 [2023-08-24 06:19:45,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:19:45,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:19:45,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:19:45,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:19:45,197 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:19:45,198 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:19:45,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:19:45,198 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:19:45,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:19:45,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:19:45,199 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:19:45,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:19:45,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:19:45,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:19:45,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:19:45,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:19:45,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:19:45,202 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:19:45,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:19:45,208 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:19:45,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:19:45,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:19:45,209 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:19:45,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:19:45,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:19:45,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:19:45,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:19:45,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:19:45,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:19:45,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:19:45,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:19:45,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:19:45,212 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:19:45,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:19:45,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:19:45,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:19:45,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:19:45,551 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:19:45,555 INFO L431 ainManager$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 [2023-08-24 06:19:46,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:19:47,041 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:19:47,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-24 06:19:47,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8c7f203/5792e38e12ac4e74a80053b53a7f6507/FLAG20b57cad7 [2023-08-24 06:19:47,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8c7f203/5792e38e12ac4e74a80053b53a7f6507 [2023-08-24 06:19:47,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:19:47,073 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:19:47,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:19:47,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:19:47,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:19:47,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e09ab8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47, skipping insertion in model container [2023-08-24 06:19:47,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,128 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:19:47,447 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] [2023-08-24 06:19:47,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:19:47,489 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:19:47,514 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:19:47,515 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:19:47,528 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] [2023-08-24 06:19:47,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:19:47,573 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:19:47,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47 WrapperNode [2023-08-24 06:19:47,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:19:47,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:19:47,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:19:47,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:19:47,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,619 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 206 [2023-08-24 06:19:47,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:19:47,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:19:47,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:19:47,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:19:47,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,677 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,679 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:19:47,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:19:47,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:19:47,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:19:47,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (1/1) ... [2023-08-24 06:19:47,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:19:47,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:19:47,722 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) [2023-08-24 06:19:47,743 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 [2023-08-24 06:19:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:19:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 06:19:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 06:19:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:19:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:19:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:19:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:19:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-24 06:19:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-24 06:19:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:19:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:19:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:19:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:19:47,765 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:19:47,933 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:19:47,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:19:48,257 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:19:48,264 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:19:48,265 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-24 06:19:48,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:19:48 BoogieIcfgContainer [2023-08-24 06:19:48,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:19:48,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:19:48,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:19:48,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:19:48,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:19:47" (1/3) ... [2023-08-24 06:19:48,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bad748c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:19:48, skipping insertion in model container [2023-08-24 06:19:48,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:19:47" (2/3) ... [2023-08-24 06:19:48,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bad748c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:19:48, skipping insertion in model container [2023-08-24 06:19:48,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:19:48" (3/3) ... [2023-08-24 06:19:48,277 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-24 06:19:48,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:19:48,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 06:19:48,292 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:19:48,412 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:19:48,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 204 transitions, 430 flow [2023-08-24 06:19:48,545 INFO L124 PetriNetUnfolderBase]: 58/372 cut-off events. [2023-08-24 06:19:48,545 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-24 06:19:48,557 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. [2023-08-24 06:19:48,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 204 transitions, 430 flow [2023-08-24 06:19:48,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 204 transitions, 430 flow [2023-08-24 06:19:48,568 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:19:48,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 204 transitions, 430 flow [2023-08-24 06:19:48,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 204 transitions, 430 flow [2023-08-24 06:19:48,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 204 transitions, 430 flow [2023-08-24 06:19:48,649 INFO L124 PetriNetUnfolderBase]: 58/372 cut-off events. [2023-08-24 06:19:48,649 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-24 06:19:48,653 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. [2023-08-24 06:19:48,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 16632 [2023-08-24 06:19:52,378 INFO L134 LiptonReduction]: Checked pairs total: 28692 [2023-08-24 06:19:52,378 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-24 06:19:52,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:19:52,396 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;@10671120, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:19:52,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:19:52,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:19:52,401 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-24 06:19:52,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:19:52,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:19:52,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:19:52,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:19:52,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:19:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1528870253, now seen corresponding path program 1 times [2023-08-24 06:19:52,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:19:52,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393925144] [2023-08-24 06:19:52,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:19:52,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:19:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:52,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:19:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:52,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:19:52,572 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:19:52,573 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:19:52,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:19:52,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:19:52,576 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:19:52,582 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:19:52,583 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:19:52,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:19:52,646 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:19:52,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 318 transitions, 684 flow [2023-08-24 06:19:52,849 INFO L124 PetriNetUnfolderBase]: 197/1090 cut-off events. [2023-08-24 06:19:52,849 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-24 06:19:52,874 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. [2023-08-24 06:19:52,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 318 transitions, 684 flow [2023-08-24 06:19:52,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 318 transitions, 684 flow [2023-08-24 06:19:52,890 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:19:52,891 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 318 transitions, 684 flow [2023-08-24 06:19:52,891 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 318 transitions, 684 flow [2023-08-24 06:19:52,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 318 transitions, 684 flow [2023-08-24 06:19:53,079 INFO L124 PetriNetUnfolderBase]: 197/1090 cut-off events. [2023-08-24 06:19:53,080 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-24 06:19:53,100 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. [2023-08-24 06:19:53,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 58752 [2023-08-24 06:19:57,063 INFO L134 LiptonReduction]: Checked pairs total: 136501 [2023-08-24 06:19:57,064 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-08-24 06:19:57,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:19:57,067 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;@10671120, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:19:57,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:19:57,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:19:57,076 INFO L124 PetriNetUnfolderBase]: 34/135 cut-off events. [2023-08-24 06:19:57,076 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-24 06:19:57,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:19:57,076 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:19:57,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:19:57,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:19:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1053644042, now seen corresponding path program 1 times [2023-08-24 06:19:57,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:19:57,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665073423] [2023-08-24 06:19:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:19:57,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:19:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:57,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:19:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:57,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:19:57,125 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:19:57,125 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:19:57,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:19:57,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:19:57,126 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:19:57,126 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:19:57,126 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:19:57,127 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:19:57,167 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:19:57,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 432 transitions, 942 flow [2023-08-24 06:19:57,827 INFO L124 PetriNetUnfolderBase]: 664/3144 cut-off events. [2023-08-24 06:19:57,827 INFO L125 PetriNetUnfolderBase]: For 419/431 co-relation queries the response was YES. [2023-08-24 06:19:57,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 3144 events. 664/3144 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22946 event pairs, 32 based on Foata normal form. 0/2653 useless extension candidates. Maximal degree in co-relation 2006. Up to 192 conditions per place. [2023-08-24 06:19:57,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 432 transitions, 942 flow [2023-08-24 06:19:57,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 432 transitions, 942 flow [2023-08-24 06:19:57,949 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:19:57,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 432 transitions, 942 flow [2023-08-24 06:19:57,949 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 432 transitions, 942 flow [2023-08-24 06:19:57,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 432 transitions, 942 flow [2023-08-24 06:19:58,544 INFO L124 PetriNetUnfolderBase]: 664/3144 cut-off events. [2023-08-24 06:19:58,544 INFO L125 PetriNetUnfolderBase]: For 419/431 co-relation queries the response was YES. [2023-08-24 06:19:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 3144 events. 664/3144 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22946 event pairs, 32 based on Foata normal form. 0/2653 useless extension candidates. Maximal degree in co-relation 2006. Up to 192 conditions per place. [2023-08-24 06:19:58,809 INFO L119 LiptonReduction]: Number of co-enabled transitions 126360 [2023-08-24 06:20:03,147 INFO L134 LiptonReduction]: Checked pairs total: 308223 [2023-08-24 06:20:03,147 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-08-24 06:20:03,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:20:03,150 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;@10671120, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:20:03,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:20:03,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:20:03,163 INFO L124 PetriNetUnfolderBase]: 71/267 cut-off events. [2023-08-24 06:20:03,164 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-24 06:20:03,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:20:03,164 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:20:03,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:20:03,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:20:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2048045416, now seen corresponding path program 1 times [2023-08-24 06:20:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:20:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056398804] [2023-08-24 06:20:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:20:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:20:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:20:03,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:20:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:20:03,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:20:03,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:20:03,226 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:20:03,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:20:03,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:20:03,227 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:20:03,227 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:20:03,227 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:20:03,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:20:03,272 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-24 06:20:03,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 546 transitions, 1204 flow [2023-08-24 06:20:06,393 INFO L124 PetriNetUnfolderBase]: 2647/10422 cut-off events. [2023-08-24 06:20:06,393 INFO L125 PetriNetUnfolderBase]: For 2144/2159 co-relation queries the response was YES. [2023-08-24 06:20:06,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12587 conditions, 10422 events. 2647/10422 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 94436 event pairs, 381 based on Foata normal form. 0/9026 useless extension candidates. Maximal degree in co-relation 6546. Up to 1024 conditions per place. [2023-08-24 06:20:06,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 546 transitions, 1204 flow [2023-08-24 06:20:06,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 546 transitions, 1204 flow [2023-08-24 06:20:06,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:20:06,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 546 transitions, 1204 flow [2023-08-24 06:20:06,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 546 transitions, 1204 flow [2023-08-24 06:20:06,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 546 transitions, 1204 flow [2023-08-24 06:20:09,375 INFO L124 PetriNetUnfolderBase]: 2647/10422 cut-off events. [2023-08-24 06:20:09,375 INFO L125 PetriNetUnfolderBase]: For 2144/2159 co-relation queries the response was YES. [2023-08-24 06:20:09,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12587 conditions, 10422 events. 2647/10422 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 94436 event pairs, 381 based on Foata normal form. 0/9026 useless extension candidates. Maximal degree in co-relation 6546. Up to 1024 conditions per place. [2023-08-24 06:20:10,233 INFO L119 LiptonReduction]: Number of co-enabled transitions 219456 [2023-08-24 06:20:15,061 INFO L134 LiptonReduction]: Checked pairs total: 506849 [2023-08-24 06:20:15,062 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-08-24 06:20:15,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:20:15,064 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;@10671120, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:20:15,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:20:15,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:20:15,111 INFO L124 PetriNetUnfolderBase]: 142/505 cut-off events. [2023-08-24 06:20:15,111 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-08-24 06:20:15,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:20:15,111 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:20:15,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:20:15,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:20:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1712119530, now seen corresponding path program 1 times [2023-08-24 06:20:15,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:20:15,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250808464] [2023-08-24 06:20:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:20:15,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:20:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:20:15,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:20:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:20:15,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:20:15,162 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:20:15,163 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:20:15,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:20:15,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:20:15,163 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:20:15,164 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:20:15,164 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:20:15,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:20:15,231 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-24 06:20:15,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 660 transitions, 1470 flow [2023-08-24 06:20:27,456 INFO L124 PetriNetUnfolderBase]: 11762/39340 cut-off events. [2023-08-24 06:20:27,457 INFO L125 PetriNetUnfolderBase]: For 10450/10480 co-relation queries the response was YES. [2023-08-24 06:20:29,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49766 conditions, 39340 events. 11762/39340 cut-off events. For 10450/10480 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 436555 event pairs, 2852 based on Foata normal form. 0/34705 useless extension candidates. Maximal degree in co-relation 24724. Up to 5120 conditions per place. [2023-08-24 06:20:29,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 660 transitions, 1470 flow [2023-08-24 06:20:30,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 537 places, 660 transitions, 1470 flow [2023-08-24 06:20:30,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:20:30,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 537 places, 660 transitions, 1470 flow [2023-08-24 06:20:30,013 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 537 places, 660 transitions, 1470 flow [2023-08-24 06:20:30,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 660 transitions, 1470 flow [2023-08-24 06:20:42,024 INFO L124 PetriNetUnfolderBase]: 11762/39340 cut-off events. [2023-08-24 06:20:42,025 INFO L125 PetriNetUnfolderBase]: For 10450/10480 co-relation queries the response was YES. [2023-08-24 06:20:43,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49766 conditions, 39340 events. 11762/39340 cut-off events. For 10450/10480 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 436555 event pairs, 2852 based on Foata normal form. 0/34705 useless extension candidates. Maximal degree in co-relation 24724. Up to 5120 conditions per place. [2023-08-24 06:20:46,863 INFO L119 LiptonReduction]: Number of co-enabled transitions 338040 [2023-08-24 06:20:52,232 INFO L134 LiptonReduction]: Checked pairs total: 790145 [2023-08-24 06:20:52,232 INFO L136 LiptonReduction]: Total number of compositions: 420 [2023-08-24 06:20:52,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:20:52,235 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;@10671120, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:20:52,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:20:52,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:20:52,307 INFO L124 PetriNetUnfolderBase]: 243/829 cut-off events. [2023-08-24 06:20:52,307 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2023-08-24 06:20:52,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:20:52,308 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:20:52,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:20:52,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:20:52,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1015928525, now seen corresponding path program 1 times [2023-08-24 06:20:52,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:20:52,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155803637] [2023-08-24 06:20:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:20:52,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:20:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:20:52,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:20:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:20:52,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:20:52,393 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:20:52,393 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:20:52,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:20:52,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:20:52,394 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:20:52,394 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:20:52,394 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:20:52,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:20:52,446 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-24 06:20:52,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 627 places, 774 transitions, 1740 flow [2023-08-24 06:22:04,157 INFO L124 PetriNetUnfolderBase]: 53929/159018 cut-off events. [2023-08-24 06:22:04,157 INFO L125 PetriNetUnfolderBase]: For 49552/49594 co-relation queries the response was YES. [2023-08-24 06:22:17,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208447 conditions, 159018 events. 53929/159018 cut-off events. For 49552/49594 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 2082832 event pairs, 22897 based on Foata normal form. 0/141898 useless extension candidates. Maximal degree in co-relation 101405. Up to 24576 conditions per place. [2023-08-24 06:22:17,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 627 places, 774 transitions, 1740 flow [2023-08-24 06:22:23,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 627 places, 774 transitions, 1740 flow [2023-08-24 06:22:23,181 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:22:23,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 627 places, 774 transitions, 1740 flow [2023-08-24 06:22:23,181 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 627 places, 774 transitions, 1740 flow [2023-08-24 06:22:23,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 627 places, 774 transitions, 1740 flow [2023-08-24 06:23:27,189 INFO L124 PetriNetUnfolderBase]: 53929/159018 cut-off events. [2023-08-24 06:23:27,189 INFO L125 PetriNetUnfolderBase]: For 49552/49594 co-relation queries the response was YES. [2023-08-24 06:23:41,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208447 conditions, 159018 events. 53929/159018 cut-off events. For 49552/49594 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 2082832 event pairs, 22897 based on Foata normal form. 0/141898 useless extension candidates. Maximal degree in co-relation 101405. Up to 24576 conditions per place. [2023-08-24 06:24:05,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 482112 [2023-08-24 06:24:12,115 INFO L134 LiptonReduction]: Checked pairs total: 1276155 [2023-08-24 06:24:12,115 INFO L136 LiptonReduction]: Total number of compositions: 489 [2023-08-24 06:24:12,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:24:12,118 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;@10671120, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:24:12,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:24:12,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:24:12,242 INFO L124 PetriNetUnfolderBase]: 386/1261 cut-off events. [2023-08-24 06:24:12,242 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2023-08-24 06:24:12,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:24:12,242 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:24:12,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:24:12,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:24:12,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1490078801, now seen corresponding path program 1 times [2023-08-24 06:24:12,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:24:12,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872887422] [2023-08-24 06:24:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:24:12,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:24:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:12,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:24:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:24:12,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:24:12,285 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:24:12,285 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:24:12,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:24:12,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:24:12,286 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:24:12,286 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:24:12,286 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:24:12,286 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:24:12,344 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-08-24 06:24:12,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 717 places, 888 transitions, 2014 flow