./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.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 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:26:58,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:26:58,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:26:58,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:26:58,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:26:58,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:26:58,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:26:58,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:26:58,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:26:58,675 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:26:58,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:26:58,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:26:58,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:26:58,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:26:58,676 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:26:58,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:26:58,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:26:58,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:26:58,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:26:58,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:26:58,677 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:26:58,680 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:26:58,680 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:26:58,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:26:58,681 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:26:58,681 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:26:58,681 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:26:58,681 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:26:58,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:26:58,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:26:58,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:26:58,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:26:58,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:26:58,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:26:58,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:26:58,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:26:58,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:26:58,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:26:58,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:26:58,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:26:58,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:26:58,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:26:58,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 [2024-10-14 19:26:58,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:26:58,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:26:58,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:26:58,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:26:58,931 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:26:58,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-10-14 19:27:00,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:27:00,486 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:27:00,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-10-14 19:27:00,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a1bd1ef3/5409d6ef72e9456f986fcc1742662172/FLAG27e2c0096 [2024-10-14 19:27:00,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a1bd1ef3/5409d6ef72e9456f986fcc1742662172 [2024-10-14 19:27:00,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:27:00,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:27:00,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:27:00,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:27:00,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:27:00,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:00,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0110d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00, skipping insertion in model container [2024-10-14 19:27:00,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:00,569 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:27:00,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:27:00,889 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:27:00,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:27:00,964 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:27:00,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00 WrapperNode [2024-10-14 19:27:00,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:27:00,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:27:00,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:27:00,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:27:00,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:00,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,005 INFO L138 Inliner]: procedures = 164, calls = 17, calls flagged for inlining = 4, calls inlined = 5, statements flattened = 67 [2024-10-14 19:27:01,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:27:01,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:27:01,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:27:01,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:27:01,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,038 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-14 19:27:01,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:27:01,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:27:01,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:27:01,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:27:01,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (1/1) ... [2024-10-14 19:27:01,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:27:01,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:27:01,092 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) [2024-10-14 19:27:01,096 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 [2024-10-14 19:27:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 19:27:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 19:27:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 19:27:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:27:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:27:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 19:27:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 19:27:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:27:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:27:01,141 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:27:01,259 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:27:01,262 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:27:01,372 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:27:01,373 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:27:01,447 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:27:01,448 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 19:27:01,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:27:01 BoogieIcfgContainer [2024-10-14 19:27:01,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:27:01,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:27:01,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:27:01,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:27:01,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:27:00" (1/3) ... [2024-10-14 19:27:01,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb39c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:27:01, skipping insertion in model container [2024-10-14 19:27:01,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:27:00" (2/3) ... [2024-10-14 19:27:01,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb39c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:27:01, skipping insertion in model container [2024-10-14 19:27:01,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:27:01" (3/3) ... [2024-10-14 19:27:01,456 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2024-10-14 19:27:01,470 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:27:01,470 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-14 19:27:01,470 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:27:01,510 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:27:01,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 35 transitions, 74 flow [2024-10-14 19:27:01,573 INFO L124 PetriNetUnfolderBase]: 8/54 cut-off events. [2024-10-14 19:27:01,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:27:01,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 54 events. 8/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2024-10-14 19:27:01,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 35 transitions, 74 flow [2024-10-14 19:27:01,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 35 transitions, 74 flow [2024-10-14 19:27:01,599 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:27:01,608 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;@5f1a828f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:27:01,608 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-14 19:27:01,617 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:27:01,617 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-10-14 19:27:01,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:27:01,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:01,619 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 19:27:01,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2024-10-14 19:27:01,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:01,623 INFO L85 PathProgramCache]: Analyzing trace with hash 157571686, now seen corresponding path program 1 times [2024-10-14 19:27:01,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:01,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670357671] [2024-10-14 19:27:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:27:01,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:27:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:27:01,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:27:01,786 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:27:01,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-14 19:27:01,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-14 19:27:01,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-14 19:27:01,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-10-14 19:27:01,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-14 19:27:01,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:27:01,790 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-14 19:27:01,792 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:27:01,793 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 19:27:01,806 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:27:01,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 108 flow [2024-10-14 19:27:01,824 INFO L124 PetriNetUnfolderBase]: 13/87 cut-off events. [2024-10-14 19:27:01,824 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:27:01,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 87 events. 13/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 56. Up to 6 conditions per place. [2024-10-14 19:27:01,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 108 flow [2024-10-14 19:27:01,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 49 transitions, 108 flow [2024-10-14 19:27:01,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:27:01,829 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;@5f1a828f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:27:01,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-14 19:27:01,834 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:27:01,835 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-10-14 19:27:01,835 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:27:01,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:01,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:01,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-14 19:27:01,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 743436492, now seen corresponding path program 1 times [2024-10-14 19:27:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:01,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601256790] [2024-10-14 19:27:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:01,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:01,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:01,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601256790] [2024-10-14 19:27:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601256790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:01,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:27:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736402111] [2024-10-14 19:27:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:01,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:27:01,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:01,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:27:01,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:27:01,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-14 19:27:01,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-10-14 19:27:01,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:01,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-14 19:27:01,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:27:02,199 INFO L124 PetriNetUnfolderBase]: 680/1512 cut-off events. [2024-10-14 19:27:02,200 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-14 19:27:02,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 1512 events. 680/1512 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10268 event pairs, 680 based on Foata normal form. 354/1782 useless extension candidates. Maximal degree in co-relation 1927. Up to 1154 conditions per place. [2024-10-14 19:27:02,217 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 23 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-10-14 19:27:02,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 134 flow [2024-10-14 19:27:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:27:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:27:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-10-14 19:27:02,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-10-14 19:27:02,230 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 108 flow. Second operand 2 states and 62 transitions. [2024-10-14 19:27:02,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 134 flow [2024-10-14 19:27:02,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:27:02,235 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 88 flow [2024-10-14 19:27:02,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-10-14 19:27:02,239 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-10-14 19:27:02,240 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 88 flow [2024-10-14 19:27:02,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-10-14 19:27:02,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:02,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:02,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:27:02,240 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-14 19:27:02,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1986174764, now seen corresponding path program 1 times [2024-10-14 19:27:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198297647] [2024-10-14 19:27:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:02,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:02,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198297647] [2024-10-14 19:27:02,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198297647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:02,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:02,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:27:02,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979009359] [2024-10-14 19:27:02,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:02,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:27:02,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:27:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:27:02,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-10-14 19:27:02,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-10-14 19:27:02,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:02,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-10-14 19:27:02,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:27:02,659 INFO L124 PetriNetUnfolderBase]: 1080/2300 cut-off events. [2024-10-14 19:27:02,659 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-14 19:27:02,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4146 conditions, 2300 events. 1080/2300 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16251 event pairs, 687 based on Foata normal form. 206/2448 useless extension candidates. Maximal degree in co-relation 4141. Up to 1386 conditions per place. [2024-10-14 19:27:02,669 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-10-14 19:27:02,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 229 flow [2024-10-14 19:27:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:27:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:27:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-10-14 19:27:02,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6054421768707483 [2024-10-14 19:27:02,674 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 88 flow. Second operand 3 states and 89 transitions. [2024-10-14 19:27:02,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 229 flow [2024-10-14 19:27:02,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:27:02,677 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 142 flow [2024-10-14 19:27:02,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-14 19:27:02,680 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-10-14 19:27:02,681 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 142 flow [2024-10-14 19:27:02,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-10-14 19:27:02,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:02,684 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2024-10-14 19:27:02,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:27:02,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-10-14 19:27:02,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:02,685 INFO L85 PathProgramCache]: Analyzing trace with hash 547898454, now seen corresponding path program 1 times [2024-10-14 19:27:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:02,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681758911] [2024-10-14 19:27:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:27:02,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:27:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:27:02,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:27:02,730 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:27:02,730 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-14 19:27:02,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-14 19:27:02,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-14 19:27:02,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-10-14 19:27:02,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-14 19:27:02,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-14 19:27:02,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:27:02,733 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 19:27:02,733 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:27:02,733 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 19:27:02,756 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:27:02,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 63 transitions, 144 flow [2024-10-14 19:27:02,768 INFO L124 PetriNetUnfolderBase]: 18/120 cut-off events. [2024-10-14 19:27:02,768 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 19:27:02,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 18/120 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 473 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 93. Up to 8 conditions per place. [2024-10-14 19:27:02,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 63 transitions, 144 flow [2024-10-14 19:27:02,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 63 transitions, 144 flow [2024-10-14 19:27:02,771 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:27:02,772 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;@5f1a828f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:27:02,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 19:27:02,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:27:02,776 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-10-14 19:27:02,776 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:27:02,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:02,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:02,776 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-10-14 19:27:02,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:02,777 INFO L85 PathProgramCache]: Analyzing trace with hash 813252684, now seen corresponding path program 1 times [2024-10-14 19:27:02,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:02,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607683030] [2024-10-14 19:27:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:02,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607683030] [2024-10-14 19:27:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607683030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:02,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:02,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:27:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170280281] [2024-10-14 19:27:02,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:02,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:27:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:27:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:27:02,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-10-14 19:27:02,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2024-10-14 19:27:02,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:02,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-10-14 19:27:02,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:27:03,684 INFO L124 PetriNetUnfolderBase]: 6440/11494 cut-off events. [2024-10-14 19:27:03,685 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-10-14 19:27:03,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20952 conditions, 11494 events. 6440/11494 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 91646 event pairs, 6440 based on Foata normal form. 3066/14061 useless extension candidates. Maximal degree in co-relation 4459. Up to 9290 conditions per place. [2024-10-14 19:27:03,746 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 29 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-10-14 19:27:03,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 176 flow [2024-10-14 19:27:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:27:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:27:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-10-14 19:27:03,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-10-14 19:27:03,749 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 144 flow. Second operand 2 states and 80 transitions. [2024-10-14 19:27:03,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 176 flow [2024-10-14 19:27:03,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 19:27:03,752 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 116 flow [2024-10-14 19:27:03,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=58, PETRI_TRANSITIONS=50} [2024-10-14 19:27:03,753 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-10-14 19:27:03,753 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 116 flow [2024-10-14 19:27:03,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2024-10-14 19:27:03,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:03,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:03,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:27:03,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-10-14 19:27:03,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash 178127251, now seen corresponding path program 1 times [2024-10-14 19:27:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644847562] [2024-10-14 19:27:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:03,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644847562] [2024-10-14 19:27:03,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644847562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:03,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:03,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:27:03,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786048539] [2024-10-14 19:27:03,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:03,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:27:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:03,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:27:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:27:03,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 63 [2024-10-14 19:27:03,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-14 19:27:03,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:03,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 63 [2024-10-14 19:27:03,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:27:05,215 INFO L124 PetriNetUnfolderBase]: 13477/23774 cut-off events. [2024-10-14 19:27:05,217 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-10-14 19:27:05,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43372 conditions, 23774 events. 13477/23774 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 206991 event pairs, 8161 based on Foata normal form. 2081/25389 useless extension candidates. Maximal degree in co-relation 43366. Up to 14060 conditions per place. [2024-10-14 19:27:05,347 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 52 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-10-14 19:27:05,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 300 flow [2024-10-14 19:27:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:27:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:27:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-10-14 19:27:05,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2024-10-14 19:27:05,353 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 116 flow. Second operand 3 states and 115 transitions. [2024-10-14 19:27:05,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 300 flow [2024-10-14 19:27:05,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:27:05,356 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 188 flow [2024-10-14 19:27:05,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-10-14 19:27:05,357 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-10-14 19:27:05,358 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 188 flow [2024-10-14 19:27:05,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-14 19:27:05,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:05,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:05,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:27:05,358 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-10-14 19:27:05,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:05,359 INFO L85 PathProgramCache]: Analyzing trace with hash -618648839, now seen corresponding path program 1 times [2024-10-14 19:27:05,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:05,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204930238] [2024-10-14 19:27:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:05,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204930238] [2024-10-14 19:27:05,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204930238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:05,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:05,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:27:05,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090128767] [2024-10-14 19:27:05,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:05,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:27:05,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:05,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:27:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:27:05,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-10-14 19:27:05,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-10-14 19:27:05,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:05,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-10-14 19:27:05,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:27:06,839 INFO L124 PetriNetUnfolderBase]: 10881/20172 cut-off events. [2024-10-14 19:27:06,840 INFO L125 PetriNetUnfolderBase]: For 7378/7528 co-relation queries the response was YES. [2024-10-14 19:27:06,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44689 conditions, 20172 events. 10881/20172 cut-off events. For 7378/7528 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 180863 event pairs, 9371 based on Foata normal form. 127/19604 useless extension candidates. Maximal degree in co-relation 44681. Up to 14599 conditions per place. [2024-10-14 19:27:07,132 INFO L140 encePairwiseOnDemand]: 61/63 looper letters, 32 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-10-14 19:27:07,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 252 flow [2024-10-14 19:27:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:27:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:27:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-14 19:27:07,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-10-14 19:27:07,133 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 188 flow. Second operand 3 states and 90 transitions. [2024-10-14 19:27:07,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 252 flow [2024-10-14 19:27:07,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:27:07,149 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 172 flow [2024-10-14 19:27:07,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-10-14 19:27:07,150 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-10-14 19:27:07,151 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 172 flow [2024-10-14 19:27:07,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-10-14 19:27:07,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:07,151 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-10-14 19:27:07,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 19:27:07,151 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-10-14 19:27:07,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1328592853, now seen corresponding path program 1 times [2024-10-14 19:27:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328003628] [2024-10-14 19:27:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:07,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:27:07,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:27:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:27:07,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:27:07,173 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:27:07,174 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-14 19:27:07,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-10-14 19:27:07,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-10-14 19:27:07,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-10-14 19:27:07,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-10-14 19:27:07,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-14 19:27:07,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-14 19:27:07,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 19:27:07,175 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 19:27:07,175 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:27:07,176 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 19:27:07,195 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:27:07,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 77 transitions, 182 flow [2024-10-14 19:27:07,205 INFO L124 PetriNetUnfolderBase]: 23/153 cut-off events. [2024-10-14 19:27:07,205 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 19:27:07,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 153 events. 23/153 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 621 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 131. Up to 10 conditions per place. [2024-10-14 19:27:07,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 77 transitions, 182 flow [2024-10-14 19:27:07,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 77 transitions, 182 flow [2024-10-14 19:27:07,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:27:07,209 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;@5f1a828f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:27:07,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-14 19:27:07,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:27:07,211 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-10-14 19:27:07,211 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:27:07,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:07,211 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:07,211 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-14 19:27:07,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash -533072180, now seen corresponding path program 1 times [2024-10-14 19:27:07,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:07,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722462856] [2024-10-14 19:27:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:07,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:07,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:07,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722462856] [2024-10-14 19:27:07,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722462856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:07,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:07,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:27:07,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688230403] [2024-10-14 19:27:07,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:07,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:27:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:27:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:27:07,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-10-14 19:27:07,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-10-14 19:27:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-10-14 19:27:07,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:27:12,356 INFO L124 PetriNetUnfolderBase]: 52880/83510 cut-off events. [2024-10-14 19:27:12,356 INFO L125 PetriNetUnfolderBase]: For 3018/3018 co-relation queries the response was YES. [2024-10-14 19:27:12,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154745 conditions, 83510 events. 52880/83510 cut-off events. For 3018/3018 co-relation queries the response was YES. Maximal size of possible extension queue 3449. Compared 738053 event pairs, 52880 based on Foata normal form. 24138/104741 useless extension candidates. Maximal degree in co-relation 21051. Up to 69986 conditions per place. [2024-10-14 19:27:12,835 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 35 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2024-10-14 19:27:12,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 220 flow [2024-10-14 19:27:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:27:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:27:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2024-10-14 19:27:12,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-14 19:27:12,839 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 182 flow. Second operand 2 states and 98 transitions. [2024-10-14 19:27:12,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 220 flow [2024-10-14 19:27:12,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 214 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 19:27:12,844 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 144 flow [2024-10-14 19:27:12,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=144, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-10-14 19:27:12,845 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2024-10-14 19:27:12,845 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 144 flow [2024-10-14 19:27:12,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-10-14 19:27:12,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:12,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:12,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 19:27:12,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-14 19:27:12,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:12,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1391729504, now seen corresponding path program 1 times [2024-10-14 19:27:12,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:12,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237070325] [2024-10-14 19:27:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:12,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:12,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:12,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237070325] [2024-10-14 19:27:12,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237070325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:12,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:12,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:27:12,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798241744] [2024-10-14 19:27:12,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:12,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:27:12,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:12,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:27:12,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:27:12,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-10-14 19:27:12,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-14 19:27:12,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:12,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-10-14 19:27:12,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:27:26,225 INFO L124 PetriNetUnfolderBase]: 141969/224625 cut-off events. [2024-10-14 19:27:26,226 INFO L125 PetriNetUnfolderBase]: For 2050/2050 co-relation queries the response was YES. [2024-10-14 19:27:26,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414310 conditions, 224625 events. 141969/224625 cut-off events. For 2050/2050 co-relation queries the response was YES. Maximal size of possible extension queue 8636. Compared 2193521 event pairs, 82899 based on Foata normal form. 19479/240392 useless extension candidates. Maximal degree in co-relation 414303. Up to 130411 conditions per place. [2024-10-14 19:27:27,430 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 63 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-10-14 19:27:27,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 371 flow [2024-10-14 19:27:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:27:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:27:27,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-10-14 19:27:27,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6103896103896104 [2024-10-14 19:27:27,432 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 144 flow. Second operand 3 states and 141 transitions. [2024-10-14 19:27:27,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 371 flow [2024-10-14 19:27:27,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:27:27,436 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 234 flow [2024-10-14 19:27:27,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-10-14 19:27:27,437 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-10-14 19:27:27,437 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 234 flow [2024-10-14 19:27:27,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-14 19:27:27,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:27,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:27,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 19:27:27,438 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-14 19:27:27,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1716981542, now seen corresponding path program 1 times [2024-10-14 19:27:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:27,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165742088] [2024-10-14 19:27:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:27,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:27,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165742088] [2024-10-14 19:27:27,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165742088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:27,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:27,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:27:27,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887638329] [2024-10-14 19:27:27,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:27,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:27:27,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:27,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:27:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:27:27,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-10-14 19:27:27,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-10-14 19:27:27,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:27,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-10-14 19:27:27,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:27:40,173 INFO L124 PetriNetUnfolderBase]: 117405/192139 cut-off events. [2024-10-14 19:27:40,173 INFO L125 PetriNetUnfolderBase]: For 69658/70744 co-relation queries the response was YES. [2024-10-14 19:27:40,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432668 conditions, 192139 events. 117405/192139 cut-off events. For 69658/70744 co-relation queries the response was YES. Maximal size of possible extension queue 7913. Compared 1939272 event pairs, 99665 based on Foata normal form. 783/187295 useless extension candidates. Maximal degree in co-relation 432659. Up to 142201 conditions per place. [2024-10-14 19:27:41,940 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 39 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2024-10-14 19:27:41,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 312 flow [2024-10-14 19:27:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:27:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:27:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-10-14 19:27:41,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-10-14 19:27:41,942 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 234 flow. Second operand 3 states and 111 transitions. [2024-10-14 19:27:41,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 312 flow [2024-10-14 19:27:42,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:27:42,067 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 214 flow [2024-10-14 19:27:42,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-10-14 19:27:42,067 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-10-14 19:27:42,068 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 214 flow [2024-10-14 19:27:42,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-10-14 19:27:42,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:42,068 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:42,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 19:27:42,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-14 19:27:42,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 321063247, now seen corresponding path program 1 times [2024-10-14 19:27:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:42,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872399949] [2024-10-14 19:27:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:42,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:27:42,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:27:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:27:42,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:27:42,088 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:27:42,088 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-14 19:27:42,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-10-14 19:27:42,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-10-14 19:27:42,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-10-14 19:27:42,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-10-14 19:27:42,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-10-14 19:27:42,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-10-14 19:27:42,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-10-14 19:27:42,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 19:27:42,089 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 19:27:42,089 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:27:42,090 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-14 19:27:42,104 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:27:42,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 222 flow [2024-10-14 19:27:42,113 INFO L124 PetriNetUnfolderBase]: 28/186 cut-off events. [2024-10-14 19:27:42,113 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-14 19:27:42,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 186 events. 28/186 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 781 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 170. Up to 12 conditions per place. [2024-10-14 19:27:42,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 91 transitions, 222 flow [2024-10-14 19:27:42,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 91 transitions, 222 flow [2024-10-14 19:27:42,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:27:42,116 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;@5f1a828f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:27:42,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-14 19:27:42,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:27:42,118 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-10-14 19:27:42,118 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:27:42,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:27:42,118 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:27:42,118 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2024-10-14 19:27:42,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:27:42,118 INFO L85 PathProgramCache]: Analyzing trace with hash 999429196, now seen corresponding path program 1 times [2024-10-14 19:27:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:27:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760910084] [2024-10-14 19:27:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:27:42,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:27:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:27:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:27:42,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:27:42,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760910084] [2024-10-14 19:27:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760910084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:27:42,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:27:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:27:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714576601] [2024-10-14 19:27:42,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:27:42,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:27:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:27:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:27:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:27:42,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 91 [2024-10-14 19:27:42,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 222 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2024-10-14 19:27:42,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:27:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 91 [2024-10-14 19:27:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand