./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/triangular-longest-2.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/triangular-longest-2.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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:23:42,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:23:42,315 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:23:42,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:23:42,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:23:42,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:23:42,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:23:42,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:23:42,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:23:42,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:23:42,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:23:42,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:23:42,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:23:42,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:23:42,362 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:23:42,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:23:42,362 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:23:42,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:23:42,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:23:42,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:23:42,363 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:23:42,363 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:23:42,364 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:23:42,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:23:42,366 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:23:42,366 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:23:42,366 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:23:42,366 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:23:42,366 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:23:42,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:23:42,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:23:42,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:23:42,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:23:42,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:23:42,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:23:42,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:23:42,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:23:42,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:23:42,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:23:42,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:23:42,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:23:42,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:23:42,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2024-10-14 19:23:42,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:23:42,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:23:42,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:23:42,601 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:23:42,601 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:23:42,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-2.i [2024-10-14 19:23:43,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:23:44,187 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:23:44,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-2.i [2024-10-14 19:23:44,207 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286f7adcf/857d74fd45974989986f87f8b1a7f3f3/FLAG528d0f481 [2024-10-14 19:23:44,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286f7adcf/857d74fd45974989986f87f8b1a7f3f3 [2024-10-14 19:23:44,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:23:44,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:23:44,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:23:44,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:23:44,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:23:44,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5322e243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44, skipping insertion in model container [2024-10-14 19:23:44,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,611 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:23:44,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:23:44,863 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:23:44,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:23:44,939 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:23:44,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44 WrapperNode [2024-10-14 19:23:44,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:23:44,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:23:44,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:23:44,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:23:44,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,980 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-10-14 19:23:44,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:23:44,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:23:44,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:23:44,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:23:44,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,991 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:45,005 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 19:23:45,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:45,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:45,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:45,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:45,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:45,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:45,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:23:45,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:23:45,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:23:45,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:23:45,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:45,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:23:45,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:45,097 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 19:23:45,099 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 19:23:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-14 19:23:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-14 19:23:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-14 19:23:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-14 19:23:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:23:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:23:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:23:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:23:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:23:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:23:45,155 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 19:23:45,247 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:23:45,248 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:23:45,368 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:23:45,369 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:23:45,517 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:23:45,517 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 19:23:45,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:23:45 BoogieIcfgContainer [2024-10-14 19:23:45,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:23:45,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:23:45,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:23:45,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:23:45,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:23:44" (1/3) ... [2024-10-14 19:23:45,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d91fec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:23:45, skipping insertion in model container [2024-10-14 19:23:45,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (2/3) ... [2024-10-14 19:23:45,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d91fec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:23:45, skipping insertion in model container [2024-10-14 19:23:45,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:23:45" (3/3) ... [2024-10-14 19:23:45,535 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2024-10-14 19:23:45,561 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:23:45,565 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:23:45,565 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:23:45,632 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:23:45,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-10-14 19:23:45,717 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-10-14 19:23:45,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:23:45,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-14 19:23:45,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-10-14 19:23:45,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-10-14 19:23:45,740 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:23:45,749 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;@5f724e8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:23:45,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:23:45,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:23:45,760 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-14 19:23:45,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:23:45,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:45,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:45,765 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:45,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1038261642, now seen corresponding path program 1 times [2024-10-14 19:23:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:45,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360276986] [2024-10-14 19:23:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:46,107 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 19:23:46,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:46,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360276986] [2024-10-14 19:23:46,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360276986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:46,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:23:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069221050] [2024-10-14 19:23:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:46,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:23:46,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:23:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:23:46,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-14 19:23:46,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 19:23:46,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:46,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-14 19:23:46,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:46,274 INFO L124 PetriNetUnfolderBase]: 70/157 cut-off events. [2024-10-14 19:23:46,279 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:23:46,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 157 events. 70/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 44 based on Foata normal form. 15/161 useless extension candidates. Maximal degree in co-relation 272. Up to 113 conditions per place. [2024-10-14 19:23:46,283 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-10-14 19:23:46,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-10-14 19:23:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:23:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:23:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-14 19:23:46,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-10-14 19:23:46,301 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-10-14 19:23:46,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-10-14 19:23:46,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:23:46,308 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-10-14 19:23:46,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-10-14 19:23:46,315 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-10-14 19:23:46,315 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-10-14 19:23:46,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 19:23:46,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:46,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:46,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:23:46,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:46,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1038262774, now seen corresponding path program 1 times [2024-10-14 19:23:46,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:46,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379142787] [2024-10-14 19:23:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:46,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:46,543 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 19:23:46,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:46,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379142787] [2024-10-14 19:23:46,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379142787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:46,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:46,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:23:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21690091] [2024-10-14 19:23:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:46,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:23:46,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:23:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:23:46,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:46,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 19:23:46,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:46,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:46,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:46,758 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2024-10-14 19:23:46,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:23:46,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 487 events. 273/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1990 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 921. Up to 181 conditions per place. [2024-10-14 19:23:46,762 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2024-10-14 19:23:46,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2024-10-14 19:23:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:23:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:23:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-14 19:23:46,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-10-14 19:23:46,764 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2024-10-14 19:23:46,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2024-10-14 19:23:46,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:23:46,765 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2024-10-14 19:23:46,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2024-10-14 19:23:46,766 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-10-14 19:23:46,767 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2024-10-14 19:23:46,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 19:23:46,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:46,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:46,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:23:46,768 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:46,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1117686194, now seen corresponding path program 1 times [2024-10-14 19:23:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:46,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441651597] [2024-10-14 19:23:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:46,891 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 19:23:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441651597] [2024-10-14 19:23:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441651597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:46,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:23:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992105991] [2024-10-14 19:23:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:46,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:23:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:23:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:23:46,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:46,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 19:23:46,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:46,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:46,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:47,077 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2024-10-14 19:23:47,078 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-10-14 19:23:47,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 704 events. 382/704 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3073 event pairs, 65 based on Foata normal form. 27/727 useless extension candidates. Maximal degree in co-relation 1591. Up to 246 conditions per place. [2024-10-14 19:23:47,089 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2024-10-14 19:23:47,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2024-10-14 19:23:47,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:23:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:23:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-10-14 19:23:47,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-10-14 19:23:47,094 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2024-10-14 19:23:47,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2024-10-14 19:23:47,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-14 19:23:47,102 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2024-10-14 19:23:47,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-10-14 19:23:47,103 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-10-14 19:23:47,105 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2024-10-14 19:23:47,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 19:23:47,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:47,105 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:47,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:23:47,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:47,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:47,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1000674482, now seen corresponding path program 2 times [2024-10-14 19:23:47,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:47,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580772473] [2024-10-14 19:23:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:47,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:47,187 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 19:23:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:47,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580772473] [2024-10-14 19:23:47,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580772473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:47,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:47,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:23:47,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940899590] [2024-10-14 19:23:47,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:47,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:23:47,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:47,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:23:47,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:23:47,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:47,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 19:23:47,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:47,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:47,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:47,328 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2024-10-14 19:23:47,328 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-10-14 19:23:47,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 611 events. 328/611 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2595 event pairs, 65 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 1723. Up to 234 conditions per place. [2024-10-14 19:23:47,331 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2024-10-14 19:23:47,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2024-10-14 19:23:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:23:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:23:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-10-14 19:23:47,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-10-14 19:23:47,332 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2024-10-14 19:23:47,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2024-10-14 19:23:47,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-14 19:23:47,336 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2024-10-14 19:23:47,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-10-14 19:23:47,337 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-10-14 19:23:47,337 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2024-10-14 19:23:47,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 19:23:47,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:47,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:47,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:23:47,338 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:47,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1356857717, now seen corresponding path program 1 times [2024-10-14 19:23:47,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:47,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348365435] [2024-10-14 19:23:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:47,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:47,437 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 19:23:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348365435] [2024-10-14 19:23:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348365435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:47,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:47,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:23:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099800198] [2024-10-14 19:23:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:47,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:23:47,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:23:47,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:23:47,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:47,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 19:23:47,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:47,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:47,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:47,630 INFO L124 PetriNetUnfolderBase]: 337/620 cut-off events. [2024-10-14 19:23:47,631 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2024-10-14 19:23:47,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 620 events. 337/620 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2632 event pairs, 74 based on Foata normal form. 18/634 useless extension candidates. Maximal degree in co-relation 1923. Up to 237 conditions per place. [2024-10-14 19:23:47,634 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2024-10-14 19:23:47,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2024-10-14 19:23:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:23:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:23:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-10-14 19:23:47,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2024-10-14 19:23:47,635 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2024-10-14 19:23:47,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2024-10-14 19:23:47,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-10-14 19:23:47,640 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2024-10-14 19:23:47,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-10-14 19:23:47,641 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-10-14 19:23:47,641 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2024-10-14 19:23:47,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 19:23:47,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:47,642 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:47,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:23:47,642 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:47,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash 392343623, now seen corresponding path program 2 times [2024-10-14 19:23:47,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:47,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253876164] [2024-10-14 19:23:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:47,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:47,714 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 19:23:47,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:47,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253876164] [2024-10-14 19:23:47,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253876164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:47,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:47,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:23:47,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093124459] [2024-10-14 19:23:47,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:47,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:23:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:47,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:23:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:23:47,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:47,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 19:23:47,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:47,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:47,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:47,925 INFO L124 PetriNetUnfolderBase]: 445/807 cut-off events. [2024-10-14 19:23:47,925 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2024-10-14 19:23:47,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 807 events. 445/807 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3481 event pairs, 59 based on Foata normal form. 27/828 useless extension candidates. Maximal degree in co-relation 2610. Up to 151 conditions per place. [2024-10-14 19:23:47,930 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 23 changer transitions 30/101 dead transitions. [2024-10-14 19:23:47,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 742 flow [2024-10-14 19:23:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:23:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:23:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-10-14 19:23:47,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2024-10-14 19:23:47,931 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 171 transitions. [2024-10-14 19:23:47,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 742 flow [2024-10-14 19:23:47,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 688 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-10-14 19:23:47,939 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 393 flow [2024-10-14 19:23:47,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=393, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-10-14 19:23:47,939 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-10-14 19:23:47,939 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 393 flow [2024-10-14 19:23:47,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 19:23:47,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:47,940 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:47,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:23:47,940 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:47,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1383133169, now seen corresponding path program 1 times [2024-10-14 19:23:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:47,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883114616] [2024-10-14 19:23:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:47,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:48,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883114616] [2024-10-14 19:23:48,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883114616] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654091035] [2024-10-14 19:23:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:48,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:48,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:48,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:23:48,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:23:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:48,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:23:48,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:48,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:48,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654091035] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:48,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:48,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:23:48,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671850351] [2024-10-14 19:23:48,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:48,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:23:48,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:23:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:23:48,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:48,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 393 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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 19:23:48,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:48,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:48,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:48,722 INFO L124 PetriNetUnfolderBase]: 571/1058 cut-off events. [2024-10-14 19:23:48,723 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2024-10-14 19:23:48,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1058 events. 571/1058 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4466 event pairs, 137 based on Foata normal form. 63/1117 useless extension candidates. Maximal degree in co-relation 4119. Up to 486 conditions per place. [2024-10-14 19:23:48,729 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 17 changer transitions 67/152 dead transitions. [2024-10-14 19:23:48,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 152 transitions, 1349 flow [2024-10-14 19:23:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 19:23:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 19:23:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-10-14 19:23:48,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2024-10-14 19:23:48,731 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 393 flow. Second operand 19 states and 288 transitions. [2024-10-14 19:23:48,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 152 transitions, 1349 flow [2024-10-14 19:23:48,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 152 transitions, 1270 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-10-14 19:23:48,739 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 524 flow [2024-10-14 19:23:48,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=524, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2024-10-14 19:23:48,740 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-10-14 19:23:48,740 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 524 flow [2024-10-14 19:23:48,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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 19:23:48,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:48,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:48,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:23:48,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:48,942 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:48,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1985942713, now seen corresponding path program 2 times [2024-10-14 19:23:48,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:48,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734444364] [2024-10-14 19:23:48,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:48,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:49,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:49,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734444364] [2024-10-14 19:23:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734444364] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:49,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187381468] [2024-10-14 19:23:49,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:23:49,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:49,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:49,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:23:49,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:23:49,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:23:49,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:23:49,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:23:49,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:49,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:49,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187381468] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:49,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:49,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:23:49,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690845413] [2024-10-14 19:23:49,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:49,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:23:49,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:23:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:23:49,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:49,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 52 transitions, 524 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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 19:23:49,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:49,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:49,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:49,816 INFO L124 PetriNetUnfolderBase]: 877/1628 cut-off events. [2024-10-14 19:23:49,817 INFO L125 PetriNetUnfolderBase]: For 29480/29480 co-relation queries the response was YES. [2024-10-14 19:23:49,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8520 conditions, 1628 events. 877/1628 cut-off events. For 29480/29480 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7913 event pairs, 70 based on Foata normal form. 72/1696 useless extension candidates. Maximal degree in co-relation 8480. Up to 249 conditions per place. [2024-10-14 19:23:49,830 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 88 selfloop transitions, 46 changer transitions 80/218 dead transitions. [2024-10-14 19:23:49,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 218 transitions, 2565 flow [2024-10-14 19:23:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 19:23:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-14 19:23:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 415 transitions. [2024-10-14 19:23:49,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5300127713920817 [2024-10-14 19:23:49,833 INFO L175 Difference]: Start difference. First operand has 90 places, 52 transitions, 524 flow. Second operand 27 states and 415 transitions. [2024-10-14 19:23:49,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 218 transitions, 2565 flow [2024-10-14 19:23:49,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 218 transitions, 2089 flow, removed 227 selfloop flow, removed 12 redundant places. [2024-10-14 19:23:49,852 INFO L231 Difference]: Finished difference. Result has 116 places, 70 transitions, 908 flow [2024-10-14 19:23:49,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=908, PETRI_PLACES=116, PETRI_TRANSITIONS=70} [2024-10-14 19:23:49,854 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-10-14 19:23:49,854 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 70 transitions, 908 flow [2024-10-14 19:23:49,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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 19:23:49,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:49,855 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:49,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 19:23:50,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-14 19:23:50,059 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:50,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1216840336, now seen corresponding path program 1 times [2024-10-14 19:23:50,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:50,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934024183] [2024-10-14 19:23:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:50,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:50,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:50,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934024183] [2024-10-14 19:23:50,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934024183] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:50,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322527459] [2024-10-14 19:23:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:50,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:50,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:50,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:23:50,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:23:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:50,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:23:50,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:50,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:50,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322527459] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:50,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:50,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-14 19:23:50,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123043791] [2024-10-14 19:23:50,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:50,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:23:50,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:50,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:23:50,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:23:50,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:50,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 70 transitions, 908 flow. Second operand has 16 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 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 19:23:50,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:50,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:50,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:51,279 INFO L124 PetriNetUnfolderBase]: 1093/2114 cut-off events. [2024-10-14 19:23:51,279 INFO L125 PetriNetUnfolderBase]: For 73277/73277 co-relation queries the response was YES. [2024-10-14 19:23:51,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13414 conditions, 2114 events. 1093/2114 cut-off events. For 73277/73277 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11488 event pairs, 94 based on Foata normal form. 72/2182 useless extension candidates. Maximal degree in co-relation 13362. Up to 409 conditions per place. [2024-10-14 19:23:51,296 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 86 selfloop transitions, 64 changer transitions 88/242 dead transitions. [2024-10-14 19:23:51,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 242 transitions, 3738 flow [2024-10-14 19:23:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-14 19:23:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-14 19:23:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2024-10-14 19:23:51,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2024-10-14 19:23:51,299 INFO L175 Difference]: Start difference. First operand has 116 places, 70 transitions, 908 flow. Second operand 28 states and 425 transitions. [2024-10-14 19:23:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 242 transitions, 3738 flow [2024-10-14 19:23:51,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 242 transitions, 3143 flow, removed 281 selfloop flow, removed 15 redundant places. [2024-10-14 19:23:51,357 INFO L231 Difference]: Finished difference. Result has 138 places, 92 transitions, 1417 flow [2024-10-14 19:23:51,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1417, PETRI_PLACES=138, PETRI_TRANSITIONS=92} [2024-10-14 19:23:51,359 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-10-14 19:23:51,359 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 92 transitions, 1417 flow [2024-10-14 19:23:51,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 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 19:23:51,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:51,359 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:51,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 19:23:51,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:51,560 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:51,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:51,564 INFO L85 PathProgramCache]: Analyzing trace with hash -974308042, now seen corresponding path program 2 times [2024-10-14 19:23:51,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:51,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029191013] [2024-10-14 19:23:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:51,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029191013] [2024-10-14 19:23:51,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029191013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:51,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686045529] [2024-10-14 19:23:51,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:23:51,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:51,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:51,774 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:23:51,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:23:51,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:23:51,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:23:51,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:23:51,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:51,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:52,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686045529] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:52,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:52,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-10-14 19:23:52,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654940275] [2024-10-14 19:23:52,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:52,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:23:52,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:52,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:23:52,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:23:52,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:52,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 92 transitions, 1417 flow. Second operand has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 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 19:23:52,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:52,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:52,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:53,391 INFO L124 PetriNetUnfolderBase]: 1399/2654 cut-off events. [2024-10-14 19:23:53,391 INFO L125 PetriNetUnfolderBase]: For 156808/156808 co-relation queries the response was YES. [2024-10-14 19:23:53,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19910 conditions, 2654 events. 1399/2654 cut-off events. For 156808/156808 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14350 event pairs, 50 based on Foata normal form. 99/2749 useless extension candidates. Maximal degree in co-relation 19848. Up to 528 conditions per place. [2024-10-14 19:23:53,415 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 112 selfloop transitions, 95 changer transitions 113/324 dead transitions. [2024-10-14 19:23:53,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 324 transitions, 6002 flow [2024-10-14 19:23:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-14 19:23:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-10-14 19:23:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 551 transitions. [2024-10-14 19:23:53,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-10-14 19:23:53,421 INFO L175 Difference]: Start difference. First operand has 138 places, 92 transitions, 1417 flow. Second operand 36 states and 551 transitions. [2024-10-14 19:23:53,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 324 transitions, 6002 flow [2024-10-14 19:23:53,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 324 transitions, 5013 flow, removed 469 selfloop flow, removed 16 redundant places. [2024-10-14 19:23:53,527 INFO L231 Difference]: Finished difference. Result has 172 places, 120 transitions, 2180 flow [2024-10-14 19:23:53,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2180, PETRI_PLACES=172, PETRI_TRANSITIONS=120} [2024-10-14 19:23:53,528 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-10-14 19:23:53,528 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 120 transitions, 2180 flow [2024-10-14 19:23:53,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 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 19:23:53,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:53,529 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:53,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 19:23:53,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:53,733 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:53,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1191975869, now seen corresponding path program 3 times [2024-10-14 19:23:53,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717565260] [2024-10-14 19:23:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:53,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:53,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717565260] [2024-10-14 19:23:53,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717565260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:53,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471135380] [2024-10-14 19:23:53,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:23:53,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:53,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:53,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:23:53,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:23:53,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-14 19:23:53,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:23:53,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 19:23:53,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:53,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471135380] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:54,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-10-14 19:23:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303319129] [2024-10-14 19:23:54,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:54,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:23:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:23:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:23:54,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:54,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 120 transitions, 2180 flow. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 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 19:23:54,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:54,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:54,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:56,103 INFO L124 PetriNetUnfolderBase]: 2155/3998 cut-off events. [2024-10-14 19:23:56,104 INFO L125 PetriNetUnfolderBase]: For 361978/361978 co-relation queries the response was YES. [2024-10-14 19:23:56,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35270 conditions, 3998 events. 2155/3998 cut-off events. For 361978/361978 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 20218 event pairs, 50 based on Foata normal form. 99/4093 useless extension candidates. Maximal degree in co-relation 35193. Up to 843 conditions per place. [2024-10-14 19:23:56,137 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 159 selfloop transitions, 143 changer transitions 150/456 dead transitions. [2024-10-14 19:23:56,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 456 transitions, 10170 flow [2024-10-14 19:23:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-14 19:23:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-10-14 19:23:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 779 transitions. [2024-10-14 19:23:56,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267072346179851 [2024-10-14 19:23:56,139 INFO L175 Difference]: Start difference. First operand has 172 places, 120 transitions, 2180 flow. Second operand 51 states and 779 transitions. [2024-10-14 19:23:56,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 456 transitions, 10170 flow [2024-10-14 19:23:56,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 456 transitions, 8153 flow, removed 974 selfloop flow, removed 24 redundant places. [2024-10-14 19:23:56,348 INFO L231 Difference]: Finished difference. Result has 220 places, 170 transitions, 3461 flow [2024-10-14 19:23:56,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3461, PETRI_PLACES=220, PETRI_TRANSITIONS=170} [2024-10-14 19:23:56,349 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-10-14 19:23:56,349 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 170 transitions, 3461 flow [2024-10-14 19:23:56,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 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 19:23:56,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:56,349 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:56,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 19:23:56,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 19:23:56,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:56,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -908330210, now seen corresponding path program 4 times [2024-10-14 19:23:56,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:56,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352245843] [2024-10-14 19:23:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:23:56,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:56,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352245843] [2024-10-14 19:23:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352245843] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:56,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941056221] [2024-10-14 19:23:56,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:23:56,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:56,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:56,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:23:56,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:23:57,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:23:57,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:23:57,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 19:23:57,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:23:57,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:23:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941056221] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:57,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:57,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-10-14 19:23:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001788228] [2024-10-14 19:23:57,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:57,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-14 19:23:57,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:57,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-14 19:23:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 19:23:57,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:57,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 170 transitions, 3461 flow. Second operand has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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 19:23:57,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:57,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:57,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:00,555 INFO L124 PetriNetUnfolderBase]: 2677/5129 cut-off events. [2024-10-14 19:24:00,556 INFO L125 PetriNetUnfolderBase]: For 813496/813496 co-relation queries the response was YES. [2024-10-14 19:24:00,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55327 conditions, 5129 events. 2677/5129 cut-off events. For 813496/813496 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 26047 event pairs, 857 based on Foata normal form. 189/5314 useless extension candidates. Maximal degree in co-relation 55232. Up to 3024 conditions per place. [2024-10-14 19:24:00,608 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 267 selfloop transitions, 55 changer transitions 221/547 dead transitions. [2024-10-14 19:24:00,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 547 transitions, 15951 flow [2024-10-14 19:24:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-14 19:24:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-10-14 19:24:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 904 transitions. [2024-10-14 19:24:00,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5110231769361221 [2024-10-14 19:24:00,611 INFO L175 Difference]: Start difference. First operand has 220 places, 170 transitions, 3461 flow. Second operand 61 states and 904 transitions. [2024-10-14 19:24:00,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 547 transitions, 15951 flow [2024-10-14 19:24:01,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 547 transitions, 12512 flow, removed 1679 selfloop flow, removed 23 redundant places. [2024-10-14 19:24:01,274 INFO L231 Difference]: Finished difference. Result has 293 places, 208 transitions, 4380 flow [2024-10-14 19:24:01,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=4380, PETRI_PLACES=293, PETRI_TRANSITIONS=208} [2024-10-14 19:24:01,275 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-10-14 19:24:01,275 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 208 transitions, 4380 flow [2024-10-14 19:24:01,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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 19:24:01,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:01,276 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:01,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 19:24:01,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:01,476 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:24:01,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1908105224, now seen corresponding path program 5 times [2024-10-14 19:24:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:01,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525761956] [2024-10-14 19:24:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525761956] [2024-10-14 19:24:01,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525761956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:24:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248024912] [2024-10-14 19:24:01,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:24:01,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:01,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:01,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:24:01,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 19:24:01,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-14 19:24:01,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:24:01,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 19:24:01,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:24:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:02,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:24:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:02,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248024912] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:24:02,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:24:02,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-10-14 19:24:02,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92476939] [2024-10-14 19:24:02,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:24:02,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-14 19:24:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-14 19:24:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 19:24:02,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:24:02,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 208 transitions, 4380 flow. Second operand has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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 19:24:02,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:02,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:24:02,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:05,699 INFO L124 PetriNetUnfolderBase]: 3397/6755 cut-off events. [2024-10-14 19:24:05,700 INFO L125 PetriNetUnfolderBase]: For 1581849/1581849 co-relation queries the response was YES. [2024-10-14 19:24:05,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82592 conditions, 6755 events. 3397/6755 cut-off events. For 1581849/1581849 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 38293 event pairs, 586 based on Foata normal form. 189/6940 useless extension candidates. Maximal degree in co-relation 82462. Up to 2191 conditions per place. [2024-10-14 19:24:05,771 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 252 selfloop transitions, 176 changer transitions 235/667 dead transitions. [2024-10-14 19:24:05,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 667 transitions, 20915 flow [2024-10-14 19:24:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-10-14 19:24:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-10-14 19:24:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 1011 transitions. [2024-10-14 19:24:05,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5126774847870182 [2024-10-14 19:24:05,777 INFO L175 Difference]: Start difference. First operand has 293 places, 208 transitions, 4380 flow. Second operand 68 states and 1011 transitions. [2024-10-14 19:24:05,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 667 transitions, 20915 flow [2024-10-14 19:24:09,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 667 transitions, 17561 flow, removed 1663 selfloop flow, removed 31 redundant places. [2024-10-14 19:24:09,304 INFO L231 Difference]: Finished difference. Result has 349 places, 287 transitions, 6675 flow [2024-10-14 19:24:09,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=6675, PETRI_PLACES=349, PETRI_TRANSITIONS=287} [2024-10-14 19:24:09,305 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-10-14 19:24:09,305 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 287 transitions, 6675 flow [2024-10-14 19:24:09,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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 19:24:09,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:09,306 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:09,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 19:24:09,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:09,507 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:24:09,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash 884768886, now seen corresponding path program 6 times [2024-10-14 19:24:09,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:09,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639156583] [2024-10-14 19:24:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:09,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:09,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639156583] [2024-10-14 19:24:09,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639156583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:24:09,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121016656] [2024-10-14 19:24:09,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:24:09,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:09,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:09,835 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:24:09,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 19:24:09,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-14 19:24:09,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:24:09,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 19:24:09,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:24:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:10,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:24:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121016656] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:24:10,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:24:10,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-10-14 19:24:10,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092800929] [2024-10-14 19:24:10,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:24:10,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-14 19:24:10,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-14 19:24:10,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2024-10-14 19:24:10,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:24:10,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 287 transitions, 6675 flow. Second operand has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 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 19:24:10,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:10,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:24:10,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:15,206 INFO L124 PetriNetUnfolderBase]: 4333/8861 cut-off events. [2024-10-14 19:24:15,206 INFO L125 PetriNetUnfolderBase]: For 2948158/2948158 co-relation queries the response was YES. [2024-10-14 19:24:15,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122766 conditions, 8861 events. 4333/8861 cut-off events. For 2948158/2948158 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 55425 event pairs, 214 based on Foata normal form. 189/9046 useless extension candidates. Maximal degree in co-relation 122615. Up to 2301 conditions per place. [2024-10-14 19:24:15,312 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 222 selfloop transitions, 338 changer transitions 249/813 dead transitions. [2024-10-14 19:24:15,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 813 transitions, 28538 flow [2024-10-14 19:24:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-14 19:24:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2024-10-14 19:24:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 1123 transitions. [2024-10-14 19:24:15,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163218390804598 [2024-10-14 19:24:15,314 INFO L175 Difference]: Start difference. First operand has 349 places, 287 transitions, 6675 flow. Second operand 75 states and 1123 transitions. [2024-10-14 19:24:15,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 813 transitions, 28538 flow [2024-10-14 19:24:21,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 813 transitions, 24143 flow, removed 2164 selfloop flow, removed 35 redundant places. [2024-10-14 19:24:21,729 INFO L231 Difference]: Finished difference. Result has 413 places, 390 transitions, 10130 flow [2024-10-14 19:24:21,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5000, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=10130, PETRI_PLACES=413, PETRI_TRANSITIONS=390} [2024-10-14 19:24:21,730 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-10-14 19:24:21,730 INFO L471 AbstractCegarLoop]: Abstraction has has 413 places, 390 transitions, 10130 flow [2024-10-14 19:24:21,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 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 19:24:21,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:21,731 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:21,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 19:24:21,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 19:24:21,932 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:24:21,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:21,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2021146752, now seen corresponding path program 7 times [2024-10-14 19:24:21,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:21,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964123430] [2024-10-14 19:24:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:22,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964123430] [2024-10-14 19:24:22,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964123430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:24:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4212088] [2024-10-14 19:24:22,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:24:22,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:22,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:22,283 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:24:22,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 19:24:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:22,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 19:24:22,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:24:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:22,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:24:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:22,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4212088] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:24:22,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:24:22,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-10-14 19:24:22,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036424659] [2024-10-14 19:24:22,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:24:22,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-14 19:24:22,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-14 19:24:22,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 19:24:22,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:24:22,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 390 transitions, 10130 flow. Second operand has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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 19:24:22,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:22,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:24:22,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:28,424 INFO L124 PetriNetUnfolderBase]: 6196/12388 cut-off events. [2024-10-14 19:24:28,424 INFO L125 PetriNetUnfolderBase]: For 5789349/5789349 co-relation queries the response was YES. [2024-10-14 19:24:28,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194940 conditions, 12388 events. 6196/12388 cut-off events. For 5789349/5789349 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 81379 event pairs, 84 based on Foata normal form. 189/12573 useless extension candidates. Maximal degree in co-relation 194763. Up to 3168 conditions per place. [2024-10-14 19:24:28,641 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 273 selfloop transitions, 495 changer transitions 259/1031 dead transitions. [2024-10-14 19:24:28,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1031 transitions, 40714 flow [2024-10-14 19:24:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-10-14 19:24:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-10-14 19:24:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1339 transitions. [2024-10-14 19:24:28,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246865203761756 [2024-10-14 19:24:28,644 INFO L175 Difference]: Start difference. First operand has 413 places, 390 transitions, 10130 flow. Second operand 88 states and 1339 transitions. [2024-10-14 19:24:28,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 1031 transitions, 40714 flow [2024-10-14 19:24:43,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1031 transitions, 30481 flow, removed 5045 selfloop flow, removed 40 redundant places. [2024-10-14 19:24:43,395 INFO L231 Difference]: Finished difference. Result has 494 places, 526 transitions, 14527 flow [2024-10-14 19:24:43,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7469, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=14527, PETRI_PLACES=494, PETRI_TRANSITIONS=526} [2024-10-14 19:24:43,396 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 464 predicate places. [2024-10-14 19:24:43,396 INFO L471 AbstractCegarLoop]: Abstraction has has 494 places, 526 transitions, 14527 flow [2024-10-14 19:24:43,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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 19:24:43,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:43,396 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:43,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 19:24:43,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 19:24:43,601 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:24:43,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2087910625, now seen corresponding path program 8 times [2024-10-14 19:24:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:43,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128549775] [2024-10-14 19:24:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:43,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:44,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:44,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128549775] [2024-10-14 19:24:44,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128549775] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:24:44,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558877131] [2024-10-14 19:24:44,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:24:44,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:44,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:44,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:24:44,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 19:24:44,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:24:44,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:24:44,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 19:24:44,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:24:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:44,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:24:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:44,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558877131] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:24:44,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:24:44,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-10-14 19:24:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951633478] [2024-10-14 19:24:44,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:24:44,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-14 19:24:44,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-14 19:24:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=2051, Unknown=0, NotChecked=0, Total=2652 [2024-10-14 19:24:44,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:24:44,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 526 transitions, 14527 flow. Second operand has 52 states, 52 states have (on average 10.01923076923077) internal successors, (521), 52 states have internal predecessors, (521), 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 19:24:44,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:44,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:24:44,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:53,550 INFO L124 PetriNetUnfolderBase]: 7573/15221 cut-off events. [2024-10-14 19:24:53,550 INFO L125 PetriNetUnfolderBase]: For 8269777/8269777 co-relation queries the response was YES. [2024-10-14 19:24:53,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253938 conditions, 15221 events. 7573/15221 cut-off events. For 8269777/8269777 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 100351 event pairs, 65 based on Foata normal form. 288/15503 useless extension candidates. Maximal degree in co-relation 253726. Up to 3846 conditions per place. [2024-10-14 19:24:53,772 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 309 selfloop transitions, 613 changer transitions 299/1225 dead transitions. [2024-10-14 19:24:53,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1225 transitions, 54048 flow [2024-10-14 19:24:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-10-14 19:24:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2024-10-14 19:24:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 1491 transitions. [2024-10-14 19:24:53,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246305418719212 [2024-10-14 19:24:53,775 INFO L175 Difference]: Start difference. First operand has 494 places, 526 transitions, 14527 flow. Second operand 98 states and 1491 transitions. [2024-10-14 19:24:53,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 1225 transitions, 54048 flow [2024-10-14 19:25:17,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1225 transitions, 40664 flow, removed 6553 selfloop flow, removed 47 redundant places. [2024-10-14 19:25:17,924 INFO L231 Difference]: Finished difference. Result has 576 places, 649 transitions, 18653 flow [2024-10-14 19:25:17,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=10599, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=491, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=18653, PETRI_PLACES=576, PETRI_TRANSITIONS=649} [2024-10-14 19:25:17,925 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 546 predicate places. [2024-10-14 19:25:17,925 INFO L471 AbstractCegarLoop]: Abstraction has has 576 places, 649 transitions, 18653 flow [2024-10-14 19:25:17,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 10.01923076923077) internal successors, (521), 52 states have internal predecessors, (521), 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 19:25:17,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:17,926 INFO L204 CegarLoopForPetriNet]: trace histogram [19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:25:17,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 19:25:18,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 19:25:18,127 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:25:18,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash -617039687, now seen corresponding path program 9 times [2024-10-14 19:25:18,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:18,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794120425] [2024-10-14 19:25:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:18,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794120425] [2024-10-14 19:25:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794120425] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:25:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893297338] [2024-10-14 19:25:19,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:25:19,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:25:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:25:19,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:25:19,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 19:25:19,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-10-14 19:25:19,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:25:19,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-14 19:25:19,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:25:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:19,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:25:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:20,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893297338] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:25:20,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:25:20,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 49 [2024-10-14 19:25:20,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256257278] [2024-10-14 19:25:20,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:25:20,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-14 19:25:20,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:20,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-14 19:25:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1918, Unknown=0, NotChecked=0, Total=2450 [2024-10-14 19:25:20,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:25:20,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 649 transitions, 18653 flow. Second operand has 50 states, 50 states have (on average 10.08) internal successors, (504), 50 states have internal predecessors, (504), 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 19:25:20,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:20,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:25:20,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand