./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:08:15,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:08:15,191 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:08:15,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:08:15,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:08:15,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:08:15,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:08:15,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:08:15,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:08:15,219 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:08:15,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:08:15,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:08:15,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:08:15,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:08:15,221 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:08:15,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:08:15,222 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:08:15,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:08:15,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:08:15,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:08:15,225 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:08:15,226 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:08:15,226 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:08:15,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:08:15,226 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:08:15,226 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:08:15,227 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:08:15,227 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:08:15,227 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:08:15,227 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:08:15,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:08:15,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:08:15,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:08:15,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:08:15,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:08:15,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:08:15,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:08:15,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:08:15,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:08:15,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:08:15,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:08:15,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:08:15,230 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2024-11-17 03:08:15,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:08:15,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:08:15,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:08:15,466 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:08:15,466 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:08:15,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-11-17 03:08:16,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:08:16,857 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:08:16,861 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-11-17 03:08:16,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abb1ba02/0db3c08dfd6d45c1ad2cce53e50cbc7a/FLAG6c6822435 [2024-11-17 03:08:16,892 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abb1ba02/0db3c08dfd6d45c1ad2cce53e50cbc7a [2024-11-17 03:08:16,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:08:16,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:08:16,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:08:16,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:08:16,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:08:16,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:08:16" (1/1) ... [2024-11-17 03:08:16,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe4b7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:16, skipping insertion in model container [2024-11-17 03:08:16,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:08:16" (1/1) ... [2024-11-17 03:08:16,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:08:17,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:08:17,246 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:08:17,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:08:17,336 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:08:17,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17 WrapperNode [2024-11-17 03:08:17,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:08:17,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:08:17,338 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:08:17,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:08:17,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,372 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 59 [2024-11-17 03:08:17,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:08:17,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:08:17,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:08:17,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:08:17,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,393 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 03:08:17,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,397 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:08:17,401 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:08:17,401 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:08:17,402 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:08:17,402 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (1/1) ... [2024-11-17 03:08:17,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:08:17,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:08:17,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:08:17,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:08:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-17 03:08:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-17 03:08:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:08:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:08:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:08:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:08:17,472 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:08:17,578 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:08:17,579 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:08:17,683 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:08:17,683 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:08:17,753 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:08:17,753 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:08:17,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:08:17 BoogieIcfgContainer [2024-11-17 03:08:17,754 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:08:17,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:08:17,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:08:17,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:08:17,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:08:16" (1/3) ... [2024-11-17 03:08:17,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312dbb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:08:17, skipping insertion in model container [2024-11-17 03:08:17,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:17" (2/3) ... [2024-11-17 03:08:17,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312dbb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:08:17, skipping insertion in model container [2024-11-17 03:08:17,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:08:17" (3/3) ... [2024-11-17 03:08:17,760 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2024-11-17 03:08:17,772 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:08:17,773 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:08:17,773 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:08:17,806 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:17,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 28 transitions, 60 flow [2024-11-17 03:08:17,855 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2024-11-17 03:08:17,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:17,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 35 events. 6/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2024-11-17 03:08:17,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 28 transitions, 60 flow [2024-11-17 03:08:17,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 28 transitions, 60 flow [2024-11-17 03:08:17,867 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:17,872 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@526de63d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:17,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:08:17,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:17,876 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:08:17,876 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:17,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:17,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:08:17,877 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:08:17,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:17,881 INFO L85 PathProgramCache]: Analyzing trace with hash 5304888, now seen corresponding path program 1 times [2024-11-17 03:08:17,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:17,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861580723] [2024-11-17 03:08:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:18,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861580723] [2024-11-17 03:08:18,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861580723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:18,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810982596] [2024-11-17 03:08:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:18,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:18,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:18,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:18,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 28 [2024-11-17 03:08:18,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 28 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2024-11-17 03:08:18,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:18,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 28 [2024-11-17 03:08:18,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:18,072 INFO L124 PetriNetUnfolderBase]: 16/62 cut-off events. [2024-11-17 03:08:18,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:18,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 62 events. 16/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 173 event pairs, 10 based on Foata normal form. 13/66 useless extension candidates. Maximal degree in co-relation 83. Up to 31 conditions per place. [2024-11-17 03:08:18,076 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 9 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2024-11-17 03:08:18,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 62 flow [2024-11-17 03:08:18,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-11-17 03:08:18,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-11-17 03:08:18,099 INFO L175 Difference]: Start difference. First operand has 26 places, 28 transitions, 60 flow. Second operand 2 states and 39 transitions. [2024-11-17 03:08:18,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 62 flow [2024-11-17 03:08:18,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 20 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:18,104 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 44 flow [2024-11-17 03:08:18,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2024-11-17 03:08:18,111 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2024-11-17 03:08:18,112 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 44 flow [2024-11-17 03:08:18,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2024-11-17 03:08:18,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:18,112 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 03:08:18,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:08:18,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:08:18,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2081586277, now seen corresponding path program 1 times [2024-11-17 03:08:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364813493] [2024-11-17 03:08:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:18,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:18,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:18,186 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:18,187 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-17 03:08:18,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-17 03:08:18,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-17 03:08:18,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-17 03:08:18,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:08:18,189 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:08:18,191 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:18,191 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:08:18,205 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:18,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 46 transitions, 102 flow [2024-11-17 03:08:18,215 INFO L124 PetriNetUnfolderBase]: 11/61 cut-off events. [2024-11-17 03:08:18,215 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:08:18,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 11/61 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 142 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2024-11-17 03:08:18,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 46 transitions, 102 flow [2024-11-17 03:08:18,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 46 transitions, 102 flow [2024-11-17 03:08:18,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:18,219 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@526de63d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:18,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-17 03:08:18,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:18,220 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:08:18,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:18,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:18,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:08:18,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:08:18,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 6720952, now seen corresponding path program 1 times [2024-11-17 03:08:18,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:18,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079426889] [2024-11-17 03:08:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:18,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:18,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:18,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079426889] [2024-11-17 03:08:18,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079426889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:18,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:18,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:18,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86726266] [2024-11-17 03:08:18,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:18,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:18,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:18,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:18,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 46 [2024-11-17 03:08:18,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-11-17 03:08:18,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:18,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 46 [2024-11-17 03:08:18,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:18,326 INFO L124 PetriNetUnfolderBase]: 196/463 cut-off events. [2024-11-17 03:08:18,326 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 03:08:18,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 463 events. 196/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2356 event pairs, 160 based on Foata normal form. 102/505 useless extension candidates. Maximal degree in co-relation 172. Up to 289 conditions per place. [2024-11-17 03:08:18,333 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 15 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2024-11-17 03:08:18,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 110 flow [2024-11-17 03:08:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 65 transitions. [2024-11-17 03:08:18,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7065217391304348 [2024-11-17 03:08:18,335 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 102 flow. Second operand 2 states and 65 transitions. [2024-11-17 03:08:18,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 110 flow [2024-11-17 03:08:18,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:18,338 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 80 flow [2024-11-17 03:08:18,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-17 03:08:18,339 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2024-11-17 03:08:18,339 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 80 flow [2024-11-17 03:08:18,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-11-17 03:08:18,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:18,340 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-17 03:08:18,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:08:18,341 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:08:18,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 122245549, now seen corresponding path program 1 times [2024-11-17 03:08:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:18,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631719018] [2024-11-17 03:08:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:18,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:18,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:18,381 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:18,383 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-17 03:08:18,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-17 03:08:18,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-17 03:08:18,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-17 03:08:18,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-17 03:08:18,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:08:18,384 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:08:18,384 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:18,384 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:08:18,412 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:18,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 64 transitions, 146 flow [2024-11-17 03:08:18,423 INFO L124 PetriNetUnfolderBase]: 16/87 cut-off events. [2024-11-17 03:08:18,423 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:08:18,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 16/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 235 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 68. Up to 8 conditions per place. [2024-11-17 03:08:18,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 64 transitions, 146 flow [2024-11-17 03:08:18,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 64 transitions, 146 flow [2024-11-17 03:08:18,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:18,427 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@526de63d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:18,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 03:08:18,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:18,429 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:08:18,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:18,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:18,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:08:18,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:08:18,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:18,430 INFO L85 PathProgramCache]: Analyzing trace with hash 8691128, now seen corresponding path program 1 times [2024-11-17 03:08:18,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:18,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645717836] [2024-11-17 03:08:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:18,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:18,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645717836] [2024-11-17 03:08:18,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645717836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:18,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:18,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:18,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240923976] [2024-11-17 03:08:18,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:18,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:18,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:18,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:18,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:18,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 64 [2024-11-17 03:08:18,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2024-11-17 03:08:18,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:18,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 64 [2024-11-17 03:08:18,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:18,737 INFO L124 PetriNetUnfolderBase]: 1816/3416 cut-off events. [2024-11-17 03:08:18,738 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-11-17 03:08:18,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5961 conditions, 3416 events. 1816/3416 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 22973 event pairs, 1600 based on Foata normal form. 857/3909 useless extension candidates. Maximal degree in co-relation 777. Up to 2377 conditions per place. [2024-11-17 03:08:18,764 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 21 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-11-17 03:08:18,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 160 flow [2024-11-17 03:08:18,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2024-11-17 03:08:18,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2024-11-17 03:08:18,767 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 146 flow. Second operand 2 states and 91 transitions. [2024-11-17 03:08:18,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 160 flow [2024-11-17 03:08:18,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 158 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:18,771 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 116 flow [2024-11-17 03:08:18,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-11-17 03:08:18,772 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2024-11-17 03:08:18,773 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 116 flow [2024-11-17 03:08:18,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2024-11-17 03:08:18,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:18,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:18,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:08:18,774 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:08:18,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash -186087414, now seen corresponding path program 1 times [2024-11-17 03:08:18,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:18,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108922559] [2024-11-17 03:08:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:18,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:18,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:18,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108922559] [2024-11-17 03:08:18,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108922559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:18,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:18,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:08:18,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631361006] [2024-11-17 03:08:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:18,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:18,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:18,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-17 03:08:18,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-11-17 03:08:18,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:18,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-17 03:08:18,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:19,346 INFO L124 PetriNetUnfolderBase]: 3436/5916 cut-off events. [2024-11-17 03:08:19,347 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-11-17 03:08:19,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11054 conditions, 5916 events. 3436/5916 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 41564 event pairs, 736 based on Foata normal form. 0/5603 useless extension candidates. Maximal degree in co-relation 11048. Up to 2085 conditions per place. [2024-11-17 03:08:19,385 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 52 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-17 03:08:19,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 304 flow [2024-11-17 03:08:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:08:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:08:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-11-17 03:08:19,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-17 03:08:19,390 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 116 flow. Second operand 4 states and 160 transitions. [2024-11-17 03:08:19,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 304 flow [2024-11-17 03:08:19,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:19,394 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 120 flow [2024-11-17 03:08:19,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-11-17 03:08:19,397 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-11-17 03:08:19,397 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 120 flow [2024-11-17 03:08:19,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-11-17 03:08:19,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:19,397 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:19,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:08:19,398 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:08:19,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash -185104311, now seen corresponding path program 1 times [2024-11-17 03:08:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:19,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177561714] [2024-11-17 03:08:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:19,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:19,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:19,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177561714] [2024-11-17 03:08:19,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177561714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:19,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:19,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:08:19,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308927672] [2024-11-17 03:08:19,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:19,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:19,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:19,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:19,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-11-17 03:08:19,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-11-17 03:08:19,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:19,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-11-17 03:08:19,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:19,853 INFO L124 PetriNetUnfolderBase]: 3436/5400 cut-off events. [2024-11-17 03:08:19,853 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES. [2024-11-17 03:08:19,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10797 conditions, 5400 events. 3436/5400 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 33781 event pairs, 736 based on Foata normal form. 129/5327 useless extension candidates. Maximal degree in co-relation 10790. Up to 2085 conditions per place. [2024-11-17 03:08:19,877 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 53 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-17 03:08:19,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 300 flow [2024-11-17 03:08:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:08:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:08:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-17 03:08:19,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-17 03:08:19,879 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 120 flow. Second operand 4 states and 156 transitions. [2024-11-17 03:08:19,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 300 flow [2024-11-17 03:08:19,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:08:19,882 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 111 flow [2024-11-17 03:08:19,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-17 03:08:19,882 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2024-11-17 03:08:19,883 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 111 flow [2024-11-17 03:08:19,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-11-17 03:08:19,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:19,883 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-17 03:08:19,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:08:19,883 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:08:19,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1236768226, now seen corresponding path program 1 times [2024-11-17 03:08:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:19,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958273562] [2024-11-17 03:08:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:19,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:19,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:19,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:19,901 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:19,901 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-17 03:08:19,901 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-17 03:08:19,901 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-17 03:08:19,901 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-17 03:08:19,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-17 03:08:19,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-17 03:08:19,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:08:19,902 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:08:19,902 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:19,902 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 03:08:19,928 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:19,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 82 transitions, 192 flow [2024-11-17 03:08:19,938 INFO L124 PetriNetUnfolderBase]: 21/113 cut-off events. [2024-11-17 03:08:19,938 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 03:08:19,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 113 events. 21/113 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 321 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 99. Up to 10 conditions per place. [2024-11-17 03:08:19,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 82 transitions, 192 flow [2024-11-17 03:08:19,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 82 transitions, 192 flow [2024-11-17 03:08:19,940 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:19,942 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@526de63d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:19,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:08:19,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:19,943 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:08:19,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:19,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:19,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:08:19,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:19,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:19,943 INFO L85 PathProgramCache]: Analyzing trace with hash 11215416, now seen corresponding path program 1 times [2024-11-17 03:08:19,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:19,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376621539] [2024-11-17 03:08:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:19,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:19,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:19,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376621539] [2024-11-17 03:08:19,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376621539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:19,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:19,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:19,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368053231] [2024-11-17 03:08:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:19,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:19,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:19,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:19,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:19,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 82 [2024-11-17 03:08:19,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-11-17 03:08:19,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:19,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 82 [2024-11-17 03:08:19,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:21,712 INFO L124 PetriNetUnfolderBase]: 14776/24373 cut-off events. [2024-11-17 03:08:21,712 INFO L125 PetriNetUnfolderBase]: For 3337/3337 co-relation queries the response was YES. [2024-11-17 03:08:21,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43767 conditions, 24373 events. 14776/24373 cut-off events. For 3337/3337 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 191307 event pairs, 13480 based on Foata normal form. 6683/28868 useless extension candidates. Maximal degree in co-relation 5998. Up to 18145 conditions per place. [2024-11-17 03:08:21,871 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 27 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2024-11-17 03:08:21,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 212 flow [2024-11-17 03:08:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:21,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 117 transitions. [2024-11-17 03:08:21,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7134146341463414 [2024-11-17 03:08:21,876 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 192 flow. Second operand 2 states and 117 transitions. [2024-11-17 03:08:21,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 212 flow [2024-11-17 03:08:21,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 206 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:21,883 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 152 flow [2024-11-17 03:08:21,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-11-17 03:08:21,884 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2024-11-17 03:08:21,886 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 152 flow [2024-11-17 03:08:21,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-11-17 03:08:21,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:21,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:21,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:08:21,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:21,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:21,887 INFO L85 PathProgramCache]: Analyzing trace with hash 45911323, now seen corresponding path program 1 times [2024-11-17 03:08:21,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:21,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335081130] [2024-11-17 03:08:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:21,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335081130] [2024-11-17 03:08:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335081130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:21,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:21,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:08:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61294535] [2024-11-17 03:08:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:21,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:21,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 82 [2024-11-17 03:08:21,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:21,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:21,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 82 [2024-11-17 03:08:21,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:24,277 INFO L124 PetriNetUnfolderBase]: 28384/43286 cut-off events. [2024-11-17 03:08:24,277 INFO L125 PetriNetUnfolderBase]: For 2050/2050 co-relation queries the response was YES. [2024-11-17 03:08:24,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81905 conditions, 43286 events. 28384/43286 cut-off events. For 2050/2050 co-relation queries the response was YES. Maximal size of possible extension queue 1766. Compared 337958 event pairs, 6352 based on Foata normal form. 0/41390 useless extension candidates. Maximal degree in co-relation 81898. Up to 15765 conditions per place. [2024-11-17 03:08:24,565 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 70 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-17 03:08:24,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 410 flow [2024-11-17 03:08:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:08:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:08:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-17 03:08:24,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2024-11-17 03:08:24,566 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 152 flow. Second operand 4 states and 214 transitions. [2024-11-17 03:08:24,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 410 flow [2024-11-17 03:08:24,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 106 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:24,573 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 156 flow [2024-11-17 03:08:24,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-11-17 03:08:24,574 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-11-17 03:08:24,574 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 156 flow [2024-11-17 03:08:24,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:24,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:24,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:24,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:08:24,575 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:24,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 46894426, now seen corresponding path program 1 times [2024-11-17 03:08:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:24,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538123712] [2024-11-17 03:08:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:24,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:24,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538123712] [2024-11-17 03:08:24,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538123712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:24,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:24,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:08:24,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073586069] [2024-11-17 03:08:24,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:24,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:24,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:24,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2024-11-17 03:08:24,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:24,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:24,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2024-11-17 03:08:24,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:26,977 INFO L124 PetriNetUnfolderBase]: 28384/40178 cut-off events. [2024-11-17 03:08:26,978 INFO L125 PetriNetUnfolderBase]: For 2824/2824 co-relation queries the response was YES. [2024-11-17 03:08:27,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80352 conditions, 40178 events. 28384/40178 cut-off events. For 2824/2824 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 276731 event pairs, 6352 based on Foata normal form. 777/39728 useless extension candidates. Maximal degree in co-relation 80344. Up to 15765 conditions per place. [2024-11-17 03:08:27,211 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 71 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-11-17 03:08:27,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 102 transitions, 406 flow [2024-11-17 03:08:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:08:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:08:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-17 03:08:27,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6402439024390244 [2024-11-17 03:08:27,213 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 156 flow. Second operand 4 states and 210 transitions. [2024-11-17 03:08:27,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 102 transitions, 406 flow [2024-11-17 03:08:27,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:08:27,226 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 147 flow [2024-11-17 03:08:27,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-17 03:08:27,227 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2024-11-17 03:08:27,228 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 147 flow [2024-11-17 03:08:27,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:27,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:27,228 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:27,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:08:27,229 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:27,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:27,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1512200468, now seen corresponding path program 1 times [2024-11-17 03:08:27,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:27,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680612805] [2024-11-17 03:08:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:27,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:08:27,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:27,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680612805] [2024-11-17 03:08:27,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680612805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:27,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:27,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:08:27,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744522510] [2024-11-17 03:08:27,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:27,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:27,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:27,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2024-11-17 03:08:27,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-11-17 03:08:27,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:27,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2024-11-17 03:08:27,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:30,756 INFO L124 PetriNetUnfolderBase]: 41545/61391 cut-off events. [2024-11-17 03:08:30,756 INFO L125 PetriNetUnfolderBase]: For 4543/4543 co-relation queries the response was YES. [2024-11-17 03:08:30,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119418 conditions, 61391 events. 41545/61391 cut-off events. For 4543/4543 co-relation queries the response was YES. Maximal size of possible extension queue 2506. Compared 478948 event pairs, 8611 based on Foata normal form. 0/56031 useless extension candidates. Maximal degree in co-relation 119410. Up to 21195 conditions per place. [2024-11-17 03:08:31,088 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 69 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-17 03:08:31,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 99 transitions, 393 flow [2024-11-17 03:08:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:08:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:08:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-17 03:08:31,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6371951219512195 [2024-11-17 03:08:31,090 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 147 flow. Second operand 4 states and 209 transitions. [2024-11-17 03:08:31,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 99 transitions, 393 flow [2024-11-17 03:08:31,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 386 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:08:31,096 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 148 flow [2024-11-17 03:08:31,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-11-17 03:08:31,096 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2024-11-17 03:08:31,097 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 148 flow [2024-11-17 03:08:31,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-11-17 03:08:31,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:31,097 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:31,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:08:31,097 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:31,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1513183571, now seen corresponding path program 1 times [2024-11-17 03:08:31,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:31,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672490677] [2024-11-17 03:08:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:31,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:08:31,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:31,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672490677] [2024-11-17 03:08:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672490677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:31,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:08:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604245224] [2024-11-17 03:08:31,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:31,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:31,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 82 [2024-11-17 03:08:31,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-17 03:08:31,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:31,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 82 [2024-11-17 03:08:31,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:33,955 INFO L124 PetriNetUnfolderBase]: 35131/50849 cut-off events. [2024-11-17 03:08:33,955 INFO L125 PetriNetUnfolderBase]: For 3544/3544 co-relation queries the response was YES. [2024-11-17 03:08:34,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100446 conditions, 50849 events. 35131/50849 cut-off events. For 3544/3544 co-relation queries the response was YES. Maximal size of possible extension queue 2071. Compared 374820 event pairs, 8611 based on Foata normal form. 1032/48984 useless extension candidates. Maximal degree in co-relation 100438. Up to 16956 conditions per place. [2024-11-17 03:08:34,204 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 68 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-11-17 03:08:34,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 378 flow [2024-11-17 03:08:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:08:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:08:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 211 transitions. [2024-11-17 03:08:34,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6432926829268293 [2024-11-17 03:08:34,206 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 148 flow. Second operand 4 states and 211 transitions. [2024-11-17 03:08:34,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 378 flow [2024-11-17 03:08:34,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:08:34,217 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 139 flow [2024-11-17 03:08:34,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-17 03:08:34,218 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2024-11-17 03:08:34,218 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 139 flow [2024-11-17 03:08:34,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-17 03:08:34,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:34,218 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:34,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:08:34,219 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:34,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash 941388730, now seen corresponding path program 1 times [2024-11-17 03:08:34,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:34,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517357644] [2024-11-17 03:08:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:34,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:34,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:34,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:34,231 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:34,231 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-17 03:08:34,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-17 03:08:34,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-17 03:08:34,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-17 03:08:34,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-17 03:08:34,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-17 03:08:34,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:08:34,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 03:08:34,233 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-17 03:08:34,233 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:34,233 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-17 03:08:34,252 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:34,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 100 transitions, 240 flow [2024-11-17 03:08:34,259 INFO L124 PetriNetUnfolderBase]: 26/139 cut-off events. [2024-11-17 03:08:34,259 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-17 03:08:34,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 139 events. 26/139 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 420 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 131. Up to 12 conditions per place. [2024-11-17 03:08:34,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 100 transitions, 240 flow [2024-11-17 03:08:34,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 100 transitions, 240 flow [2024-11-17 03:08:34,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:34,262 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@526de63d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:34,262 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 03:08:34,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:34,263 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:08:34,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:34,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:34,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:08:34,263 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:08:34,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 14293816, now seen corresponding path program 1 times [2024-11-17 03:08:34,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:34,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473222763] [2024-11-17 03:08:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:34,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:34,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473222763] [2024-11-17 03:08:34,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473222763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:34,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:34,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:34,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266983027] [2024-11-17 03:08:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:34,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:34,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 100 [2024-11-17 03:08:34,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 240 flow. Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 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) [2024-11-17 03:08:34,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:34,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 100 [2024-11-17 03:08:34,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:45,498 INFO L124 PetriNetUnfolderBase]: 111976/169561 cut-off events. [2024-11-17 03:08:45,498 INFO L125 PetriNetUnfolderBase]: For 31597/31597 co-relation queries the response was YES. [2024-11-17 03:08:46,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310780 conditions, 169561 events. 111976/169561 cut-off events. For 31597/31597 co-relation queries the response was YES. Maximal size of possible extension queue 5980. Compared 1472555 event pairs, 104200 based on Foata normal form. 49415/205844 useless extension candidates. Maximal degree in co-relation 44020. Up to 132193 conditions per place. [2024-11-17 03:08:47,253 INFO L140 encePairwiseOnDemand]: 88/100 looper letters, 33 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2024-11-17 03:08:47,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 266 flow [2024-11-17 03:08:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 143 transitions. [2024-11-17 03:08:47,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.715 [2024-11-17 03:08:47,255 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 240 flow. Second operand 2 states and 143 transitions. [2024-11-17 03:08:47,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 266 flow [2024-11-17 03:08:47,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 254 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:47,274 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 188 flow [2024-11-17 03:08:47,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-11-17 03:08:47,274 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -8 predicate places. [2024-11-17 03:08:47,275 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 188 flow [2024-11-17 03:08:47,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 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) [2024-11-17 03:08:47,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:47,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:47,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 03:08:47,275 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:08:47,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash -999326036, now seen corresponding path program 1 times [2024-11-17 03:08:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:47,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349312043] [2024-11-17 03:08:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:47,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:47,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349312043] [2024-11-17 03:08:47,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349312043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:47,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:47,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:08:47,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858307011] [2024-11-17 03:08:47,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:47,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:47,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:47,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 100 [2024-11-17 03:08:47,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2024-11-17 03:08:47,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:47,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 100 [2024-11-17 03:08:47,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand