./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 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/weaver/popl20-figure1.wvr.c -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 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:21:16,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:21:16,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:21:16,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:21:16,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:21:17,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:21:17,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:21:17,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:21:17,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:21:17,014 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:21:17,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:21:17,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:21:17,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:21:17,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:21:17,016 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:21:17,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:21:17,018 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:21:17,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:21:17,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:21:17,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:21:17,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:21:17,023 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:21:17,023 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:21:17,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:21:17,024 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:21:17,024 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:21:17,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:21:17,024 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:21:17,025 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:21:17,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:21:17,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:21:17,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:21:17,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:21:17,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:21:17,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:21:17,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:21:17,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:21:17,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:21:17,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:21:17,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:21:17,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:21:17,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:21:17,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 [2024-10-24 19:21:17,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:21:17,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:21:17,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:21:17,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:21:17,260 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:21:17,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-24 19:21:18,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:21:18,820 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:21:18,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-24 19:21:18,828 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd16a50cf/e99950bdb0b44934b9dab8e0fc97a18c/FLAGde80eadee [2024-10-24 19:21:19,235 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd16a50cf/e99950bdb0b44934b9dab8e0fc97a18c [2024-10-24 19:21:19,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:21:19,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:21:19,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:21:19,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:21:19,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:21:19,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebd4929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19, skipping insertion in model container [2024-10-24 19:21:19,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:21:19,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:21:19,420 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:21:19,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:21:19,449 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:21:19,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19 WrapperNode [2024-10-24 19:21:19,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:21:19,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:21:19,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:21:19,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:21:19,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,485 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2024-10-24 19:21:19,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:21:19,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:21:19,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:21:19,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:21:19,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,511 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]. [2024-10-24 19:21:19,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:21:19,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:21:19,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:21:19,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:21:19,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (1/1) ... [2024-10-24 19:21:19,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:21:19,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:19,560 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) [2024-10-24 19:21:19,563 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 [2024-10-24 19:21:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:21:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:21:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:21:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:21:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:21:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:21:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:21:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:21:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:21:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:21:19,606 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:21:19,688 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:21:19,690 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:21:19,829 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:21:19,830 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:21:19,943 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:21:19,943 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 19:21:19,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:21:19 BoogieIcfgContainer [2024-10-24 19:21:19,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:21:19,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:21:19,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:21:19,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:21:19,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:21:19" (1/3) ... [2024-10-24 19:21:19,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fdbfb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:21:19, skipping insertion in model container [2024-10-24 19:21:19,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:19" (2/3) ... [2024-10-24 19:21:19,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fdbfb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:21:19, skipping insertion in model container [2024-10-24 19:21:19,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:21:19" (3/3) ... [2024-10-24 19:21:19,952 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-10-24 19:21:19,967 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:21:19,967 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 19:21:19,967 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:21:20,002 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:21:20,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-10-24 19:21:20,057 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-10-24 19:21:20,057 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:21:20,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-24 19:21:20,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-10-24 19:21:20,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-10-24 19:21:20,079 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:21:20,087 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;@15e365ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:21:20,088 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 19:21:20,099 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:21:20,100 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-24 19:21:20,101 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:21:20,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:20,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:20,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:20,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash 353442512, now seen corresponding path program 1 times [2024-10-24 19:21:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:20,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404781893] [2024-10-24 19:21:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:20,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404781893] [2024-10-24 19:21:20,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404781893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:21:20,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:21:20,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:21:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854090586] [2024-10-24 19:21:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:21:20,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:21:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:20,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:21:20,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:21:20,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-24 19:21:20,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-10-24 19:21:20,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:20,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-24 19:21:20,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:20,402 INFO L124 PetriNetUnfolderBase]: 76/157 cut-off events. [2024-10-24 19:21:20,403 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 19:21:20,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 157 events. 76/157 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 513 event pairs, 27 based on Foata normal form. 9/165 useless extension candidates. Maximal degree in co-relation 273. Up to 91 conditions per place. [2024-10-24 19:21:20,406 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-10-24 19:21:20,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 127 flow [2024-10-24 19:21:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:21:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:21:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-10-24 19:21:20,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-24 19:21:20,416 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 46 transitions. [2024-10-24 19:21:20,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 127 flow [2024-10-24 19:21:20,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:21:20,421 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-10-24 19:21:20,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-10-24 19:21:20,426 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-10-24 19:21:20,426 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-10-24 19:21:20,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-10-24 19:21:20,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:20,427 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:20,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:21:20,427 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:20,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1224174837, now seen corresponding path program 1 times [2024-10-24 19:21:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062680817] [2024-10-24 19:21:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:20,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062680817] [2024-10-24 19:21:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062680817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:21:20,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:21:20,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:21:20,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756071103] [2024-10-24 19:21:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:21:20,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:21:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:20,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:21:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:21:20,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 19:21:20,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-24 19:21:20,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:20,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 19:21:20,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:20,811 INFO L124 PetriNetUnfolderBase]: 132/252 cut-off events. [2024-10-24 19:21:20,811 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-24 19:21:20,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 252 events. 132/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 970 event pairs, 55 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 197. Up to 161 conditions per place. [2024-10-24 19:21:20,814 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 30 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-10-24 19:21:20,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 42 transitions, 191 flow [2024-10-24 19:21:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:21:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:21:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-24 19:21:20,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-24 19:21:20,816 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 66 transitions. [2024-10-24 19:21:20,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 42 transitions, 191 flow [2024-10-24 19:21:20,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 42 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:21:20,818 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 106 flow [2024-10-24 19:21:20,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-10-24 19:21:20,818 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-10-24 19:21:20,819 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 106 flow [2024-10-24 19:21:20,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-24 19:21:20,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:20,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:20,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:21:20,820 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:20,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1871034303, now seen corresponding path program 2 times [2024-10-24 19:21:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776433342] [2024-10-24 19:21:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:20,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776433342] [2024-10-24 19:21:20,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776433342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:21:20,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:21:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 19:21:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845652269] [2024-10-24 19:21:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:21:20,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:21:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:21:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:21:20,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 19:21:20,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-10-24 19:21:20,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:20,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 19:21:20,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:21,037 INFO L124 PetriNetUnfolderBase]: 150/287 cut-off events. [2024-10-24 19:21:21,038 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-10-24 19:21:21,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 287 events. 150/287 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1129 event pairs, 4 based on Foata normal form. 13/300 useless extension candidates. Maximal degree in co-relation 357. Up to 122 conditions per place. [2024-10-24 19:21:21,041 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 10 changer transitions 1/57 dead transitions. [2024-10-24 19:21:21,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 57 transitions, 331 flow [2024-10-24 19:21:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 19:21:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 19:21:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-10-24 19:21:21,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-10-24 19:21:21,044 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 106 flow. Second operand 7 states and 87 transitions. [2024-10-24 19:21:21,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 57 transitions, 331 flow [2024-10-24 19:21:21,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 329 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 19:21:21,047 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 186 flow [2024-10-24 19:21:21,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-10-24 19:21:21,047 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-10-24 19:21:21,048 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 186 flow [2024-10-24 19:21:21,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-10-24 19:21:21,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:21,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:21,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 19:21:21,048 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:21,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:21,049 INFO L85 PathProgramCache]: Analyzing trace with hash -91052613, now seen corresponding path program 3 times [2024-10-24 19:21:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:21,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095388233] [2024-10-24 19:21:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:21,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:21,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:21,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095388233] [2024-10-24 19:21:21,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095388233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:21:21,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:21:21,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:21:21,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845422498] [2024-10-24 19:21:21,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:21:21,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:21:21,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:21,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:21:21,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:21:21,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 19:21:21,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-24 19:21:21,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:21,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 19:21:21,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:21,195 INFO L124 PetriNetUnfolderBase]: 197/374 cut-off events. [2024-10-24 19:21:21,195 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-10-24 19:21:21,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 374 events. 197/374 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1519 event pairs, 63 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 852. Up to 167 conditions per place. [2024-10-24 19:21:21,199 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 44 selfloop transitions, 10 changer transitions 2/58 dead transitions. [2024-10-24 19:21:21,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 433 flow [2024-10-24 19:21:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:21:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:21:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-10-24 19:21:21,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-24 19:21:21,201 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 186 flow. Second operand 5 states and 63 transitions. [2024-10-24 19:21:21,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 433 flow [2024-10-24 19:21:21,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:21:21,205 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 237 flow [2024-10-24 19:21:21,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2024-10-24 19:21:21,206 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-24 19:21:21,206 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 237 flow [2024-10-24 19:21:21,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-24 19:21:21,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:21,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:21,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 19:21:21,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:21,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:21,207 INFO L85 PathProgramCache]: Analyzing trace with hash -572072187, now seen corresponding path program 4 times [2024-10-24 19:21:21,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:21,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446982825] [2024-10-24 19:21:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:21,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:21,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:21,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446982825] [2024-10-24 19:21:21,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446982825] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:21,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930077539] [2024-10-24 19:21:21,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:21:21,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:21,271 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) [2024-10-24 19:21:21,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 19:21:21,319 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:21:21,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:21,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:21:21,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:21,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:21,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930077539] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:21,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:21,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-24 19:21:21,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638361918] [2024-10-24 19:21:21,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:21,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:21:21,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:21:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:21:21,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:21,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 237 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2024-10-24 19:21:21,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:21,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:21,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:21,735 INFO L124 PetriNetUnfolderBase]: 363/634 cut-off events. [2024-10-24 19:21:21,735 INFO L125 PetriNetUnfolderBase]: For 1452/1452 co-relation queries the response was YES. [2024-10-24 19:21:21,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2325 conditions, 634 events. 363/634 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2649 event pairs, 20 based on Foata normal form. 13/647 useless extension candidates. Maximal degree in co-relation 1993. Up to 147 conditions per place. [2024-10-24 19:21:21,739 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 73 selfloop transitions, 40 changer transitions 1/115 dead transitions. [2024-10-24 19:21:21,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 115 transitions, 884 flow [2024-10-24 19:21:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 19:21:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 19:21:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 164 transitions. [2024-10-24 19:21:21,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-24 19:21:21,741 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 237 flow. Second operand 15 states and 164 transitions. [2024-10-24 19:21:21,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 115 transitions, 884 flow [2024-10-24 19:21:21,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 115 transitions, 846 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-24 19:21:21,747 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 556 flow [2024-10-24 19:21:21,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=556, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-10-24 19:21:21,748 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-10-24 19:21:21,748 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 556 flow [2024-10-24 19:21:21,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2024-10-24 19:21:21,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:21,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:21,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 19:21:21,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:21,949 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:21,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1841011263, now seen corresponding path program 5 times [2024-10-24 19:21:21,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:21,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282289684] [2024-10-24 19:21:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:22,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282289684] [2024-10-24 19:21:22,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282289684] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394499992] [2024-10-24 19:21:22,015 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:21:22,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:22,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:22,017 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) [2024-10-24 19:21:22,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 19:21:22,068 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:21:22,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:22,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:21:22,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:22,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394499992] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:22,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:22,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-10-24 19:21:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588326294] [2024-10-24 19:21:22,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:22,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:21:22,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:21:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:21:22,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:22,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 556 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-10-24 19:21:22,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:22,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:22,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:22,311 INFO L124 PetriNetUnfolderBase]: 349/618 cut-off events. [2024-10-24 19:21:22,311 INFO L125 PetriNetUnfolderBase]: For 2847/2847 co-relation queries the response was YES. [2024-10-24 19:21:22,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 618 events. 349/618 cut-off events. For 2847/2847 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2632 event pairs, 57 based on Foata normal form. 13/631 useless extension candidates. Maximal degree in co-relation 2374. Up to 223 conditions per place. [2024-10-24 19:21:22,316 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 65 selfloop transitions, 37 changer transitions 1/104 dead transitions. [2024-10-24 19:21:22,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 1041 flow [2024-10-24 19:21:22,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:21:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:21:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-10-24 19:21:22,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-10-24 19:21:22,317 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 556 flow. Second operand 8 states and 97 transitions. [2024-10-24 19:21:22,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 1041 flow [2024-10-24 19:21:22,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 902 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-10-24 19:21:22,325 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 678 flow [2024-10-24 19:21:22,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=678, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-10-24 19:21:22,326 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-10-24 19:21:22,326 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 678 flow [2024-10-24 19:21:22,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-10-24 19:21:22,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:22,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:22,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 19:21:22,530 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,SelfDestructingSolverStorable5 [2024-10-24 19:21:22,531 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:22,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:22,532 INFO L85 PathProgramCache]: Analyzing trace with hash 55239027, now seen corresponding path program 6 times [2024-10-24 19:21:22,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:22,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628628629] [2024-10-24 19:21:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:22,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:22,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:22,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628628629] [2024-10-24 19:21:22,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628628629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:21:22,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:21:22,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:21:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196390920] [2024-10-24 19:21:22,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:21:22,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:21:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:21:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:21:22,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 19:21:22,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-24 19:21:22,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:22,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 19:21:22,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:22,719 INFO L124 PetriNetUnfolderBase]: 286/525 cut-off events. [2024-10-24 19:21:22,719 INFO L125 PetriNetUnfolderBase]: For 2539/2541 co-relation queries the response was YES. [2024-10-24 19:21:22,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 525 events. 286/525 cut-off events. For 2539/2541 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2226 event pairs, 81 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2112. Up to 266 conditions per place. [2024-10-24 19:21:22,723 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 48 selfloop transitions, 22 changer transitions 2/84 dead transitions. [2024-10-24 19:21:22,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 883 flow [2024-10-24 19:21:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:21:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:21:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-24 19:21:22,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 19:21:22,724 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 678 flow. Second operand 5 states and 60 transitions. [2024-10-24 19:21:22,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 883 flow [2024-10-24 19:21:22,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 814 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-10-24 19:21:22,731 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 647 flow [2024-10-24 19:21:22,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=647, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-10-24 19:21:22,732 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-10-24 19:21:22,732 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 647 flow [2024-10-24 19:21:22,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-24 19:21:22,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:22,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:22,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 19:21:22,733 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:22,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 575401179, now seen corresponding path program 1 times [2024-10-24 19:21:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:22,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366481598] [2024-10-24 19:21:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:22,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366481598] [2024-10-24 19:21:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366481598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328092737] [2024-10-24 19:21:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:22,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:22,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:22,811 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) [2024-10-24 19:21:22,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 19:21:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:22,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:22,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:22,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328092737] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:22,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:22,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 5 [2024-10-24 19:21:22,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913825122] [2024-10-24 19:21:22,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:22,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:21:22,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:21:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:21:22,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-24 19:21:22,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2024-10-24 19:21:22,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:22,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-24 19:21:22,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:23,053 INFO L124 PetriNetUnfolderBase]: 446/869 cut-off events. [2024-10-24 19:21:23,053 INFO L125 PetriNetUnfolderBase]: For 4018/4031 co-relation queries the response was YES. [2024-10-24 19:21:23,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3592 conditions, 869 events. 446/869 cut-off events. For 4018/4031 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4396 event pairs, 69 based on Foata normal form. 18/882 useless extension candidates. Maximal degree in co-relation 2715. Up to 337 conditions per place. [2024-10-24 19:21:23,058 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 92 selfloop transitions, 5 changer transitions 15/130 dead transitions. [2024-10-24 19:21:23,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 130 transitions, 1407 flow [2024-10-24 19:21:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:21:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:21:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-24 19:21:23,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-24 19:21:23,060 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 647 flow. Second operand 4 states and 66 transitions. [2024-10-24 19:21:23,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 130 transitions, 1407 flow [2024-10-24 19:21:23,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 1315 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-24 19:21:23,068 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 632 flow [2024-10-24 19:21:23,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=632, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-10-24 19:21:23,069 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-10-24 19:21:23,069 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 632 flow [2024-10-24 19:21:23,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2024-10-24 19:21:23,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:23,069 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:23,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 19:21:23,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:23,271 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:23,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1582567342, now seen corresponding path program 2 times [2024-10-24 19:21:23,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:23,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16186420] [2024-10-24 19:21:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:23,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:23,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:23,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16186420] [2024-10-24 19:21:23,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16186420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:23,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918159748] [2024-10-24 19:21:23,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:21:23,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:23,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:23,326 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) [2024-10-24 19:21:23,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 19:21:23,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:21:23,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:23,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:23,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:23,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:21:23,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918159748] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:23,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:23,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-24 19:21:23,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382501386] [2024-10-24 19:21:23,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:23,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:21:23,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:23,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:21:23,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:21:23,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:23,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 632 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-10-24 19:21:23,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:23,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:23,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:24,196 INFO L124 PetriNetUnfolderBase]: 1147/1898 cut-off events. [2024-10-24 19:21:24,196 INFO L125 PetriNetUnfolderBase]: For 7040/7040 co-relation queries the response was YES. [2024-10-24 19:21:24,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8293 conditions, 1898 events. 1147/1898 cut-off events. For 7040/7040 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8737 event pairs, 48 based on Foata normal form. 56/1936 useless extension candidates. Maximal degree in co-relation 6496. Up to 373 conditions per place. [2024-10-24 19:21:24,212 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 134 selfloop transitions, 100 changer transitions 7/242 dead transitions. [2024-10-24 19:21:24,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 242 transitions, 2261 flow [2024-10-24 19:21:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 19:21:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 19:21:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 281 transitions. [2024-10-24 19:21:24,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45032051282051283 [2024-10-24 19:21:24,214 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 632 flow. Second operand 26 states and 281 transitions. [2024-10-24 19:21:24,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 242 transitions, 2261 flow [2024-10-24 19:21:24,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 242 transitions, 2213 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-10-24 19:21:24,228 INFO L231 Difference]: Finished difference. Result has 113 places, 126 transitions, 1447 flow [2024-10-24 19:21:24,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1447, PETRI_PLACES=113, PETRI_TRANSITIONS=126} [2024-10-24 19:21:24,229 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 87 predicate places. [2024-10-24 19:21:24,229 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 126 transitions, 1447 flow [2024-10-24 19:21:24,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-10-24 19:21:24,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:24,229 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:24,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 19:21:24,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:24,430 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:24,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:24,430 INFO L85 PathProgramCache]: Analyzing trace with hash 83493486, now seen corresponding path program 3 times [2024-10-24 19:21:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:24,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602943531] [2024-10-24 19:21:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:24,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602943531] [2024-10-24 19:21:24,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602943531] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651879108] [2024-10-24 19:21:24,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:21:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:24,487 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) [2024-10-24 19:21:24,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 19:21:24,527 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 19:21:24,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:24,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:24,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:24,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651879108] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:24,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:24,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-24 19:21:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936580782] [2024-10-24 19:21:24,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:24,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:21:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:21:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:21:24,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:24,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 126 transitions, 1447 flow. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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) [2024-10-24 19:21:24,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:24,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:24,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:25,315 INFO L124 PetriNetUnfolderBase]: 1428/2369 cut-off events. [2024-10-24 19:21:25,315 INFO L125 PetriNetUnfolderBase]: For 23001/23001 co-relation queries the response was YES. [2024-10-24 19:21:25,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13776 conditions, 2369 events. 1428/2369 cut-off events. For 23001/23001 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11655 event pairs, 69 based on Foata normal form. 24/2393 useless extension candidates. Maximal degree in co-relation 12169. Up to 658 conditions per place. [2024-10-24 19:21:25,336 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 114 selfloop transitions, 125 changer transitions 20/260 dead transitions. [2024-10-24 19:21:25,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 260 transitions, 3259 flow [2024-10-24 19:21:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 19:21:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 19:21:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 162 transitions. [2024-10-24 19:21:25,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-24 19:21:25,340 INFO L175 Difference]: Start difference. First operand has 113 places, 126 transitions, 1447 flow. Second operand 15 states and 162 transitions. [2024-10-24 19:21:25,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 260 transitions, 3259 flow [2024-10-24 19:21:25,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 3062 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-10-24 19:21:25,384 INFO L231 Difference]: Finished difference. Result has 129 places, 177 transitions, 2340 flow [2024-10-24 19:21:25,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2340, PETRI_PLACES=129, PETRI_TRANSITIONS=177} [2024-10-24 19:21:25,385 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 103 predicate places. [2024-10-24 19:21:25,385 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 177 transitions, 2340 flow [2024-10-24 19:21:25,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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) [2024-10-24 19:21:25,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:25,386 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:25,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 19:21:25,586 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,SelfDestructingSolverStorable9 [2024-10-24 19:21:25,587 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:25,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:25,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2030137314, now seen corresponding path program 4 times [2024-10-24 19:21:25,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:25,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507002592] [2024-10-24 19:21:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:25,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:25,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:25,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507002592] [2024-10-24 19:21:25,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507002592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:25,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341835998] [2024-10-24 19:21:25,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:21:25,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:25,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:25,671 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) [2024-10-24 19:21:25,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 19:21:25,712 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:21:25,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:25,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:25,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:25,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:25,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341835998] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:25,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:25,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-24 19:21:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283544767] [2024-10-24 19:21:25,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:25,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 19:21:25,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:25,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 19:21:25,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-24 19:21:25,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:25,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 177 transitions, 2340 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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) [2024-10-24 19:21:25,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:25,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:25,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:26,396 INFO L124 PetriNetUnfolderBase]: 1813/2993 cut-off events. [2024-10-24 19:21:26,397 INFO L125 PetriNetUnfolderBase]: For 44656/44656 co-relation queries the response was YES. [2024-10-24 19:21:26,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19712 conditions, 2993 events. 1813/2993 cut-off events. For 44656/44656 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15431 event pairs, 155 based on Foata normal form. 18/3011 useless extension candidates. Maximal degree in co-relation 17594. Up to 628 conditions per place. [2024-10-24 19:21:26,488 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 182 selfloop transitions, 116 changer transitions 3/302 dead transitions. [2024-10-24 19:21:26,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 302 transitions, 4411 flow [2024-10-24 19:21:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 19:21:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 19:21:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 186 transitions. [2024-10-24 19:21:26,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-10-24 19:21:26,489 INFO L175 Difference]: Start difference. First operand has 129 places, 177 transitions, 2340 flow. Second operand 17 states and 186 transitions. [2024-10-24 19:21:26,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 302 transitions, 4411 flow [2024-10-24 19:21:26,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 302 transitions, 4219 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-10-24 19:21:26,592 INFO L231 Difference]: Finished difference. Result has 148 places, 215 transitions, 3150 flow [2024-10-24 19:21:26,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3150, PETRI_PLACES=148, PETRI_TRANSITIONS=215} [2024-10-24 19:21:26,593 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 122 predicate places. [2024-10-24 19:21:26,593 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 215 transitions, 3150 flow [2024-10-24 19:21:26,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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) [2024-10-24 19:21:26,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:26,594 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:26,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 19:21:26,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:26,798 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:26,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:26,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1385965072, now seen corresponding path program 5 times [2024-10-24 19:21:26,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:26,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345533014] [2024-10-24 19:21:26,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:26,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:26,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:26,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345533014] [2024-10-24 19:21:26,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345533014] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:26,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033709075] [2024-10-24 19:21:26,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:21:26,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:26,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:26,919 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) [2024-10-24 19:21:26,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 19:21:26,964 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 19:21:26,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:26,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:26,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:27,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:27,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033709075] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:27,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:27,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-24 19:21:27,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144292033] [2024-10-24 19:21:27,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:27,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:21:27,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:27,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:21:27,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:21:27,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:27,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 215 transitions, 3150 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-10-24 19:21:27,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:27,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:27,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:27,882 INFO L124 PetriNetUnfolderBase]: 2311/3823 cut-off events. [2024-10-24 19:21:27,882 INFO L125 PetriNetUnfolderBase]: For 73765/73765 co-relation queries the response was YES. [2024-10-24 19:21:27,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26696 conditions, 3823 events. 2311/3823 cut-off events. For 73765/73765 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20725 event pairs, 86 based on Foata normal form. 71/3894 useless extension candidates. Maximal degree in co-relation 23762. Up to 1204 conditions per place. [2024-10-24 19:21:27,916 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 170 selfloop transitions, 197 changer transitions 2/370 dead transitions. [2024-10-24 19:21:27,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 370 transitions, 5641 flow [2024-10-24 19:21:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 19:21:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 19:21:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 180 transitions. [2024-10-24 19:21:27,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-24 19:21:27,918 INFO L175 Difference]: Start difference. First operand has 148 places, 215 transitions, 3150 flow. Second operand 16 states and 180 transitions. [2024-10-24 19:21:27,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 370 transitions, 5641 flow [2024-10-24 19:21:28,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 370 transitions, 5226 flow, removed 193 selfloop flow, removed 3 redundant places. [2024-10-24 19:21:28,125 INFO L231 Difference]: Finished difference. Result has 169 places, 276 transitions, 4477 flow [2024-10-24 19:21:28,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4477, PETRI_PLACES=169, PETRI_TRANSITIONS=276} [2024-10-24 19:21:28,126 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2024-10-24 19:21:28,126 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 276 transitions, 4477 flow [2024-10-24 19:21:28,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-10-24 19:21:28,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:28,126 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:28,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 19:21:28,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:28,327 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:28,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash -511635788, now seen corresponding path program 6 times [2024-10-24 19:21:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:28,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230496992] [2024-10-24 19:21:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:28,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:28,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:28,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230496992] [2024-10-24 19:21:28,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230496992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:28,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027617718] [2024-10-24 19:21:28,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 19:21:28,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:28,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:28,424 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) [2024-10-24 19:21:28,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 19:21:28,466 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-24 19:21:28,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:28,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:28,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:28,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027617718] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:28,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:28,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-24 19:21:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80818795] [2024-10-24 19:21:28,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:28,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:21:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:21:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:21:28,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:28,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 276 transitions, 4477 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-10-24 19:21:28,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:28,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:28,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:29,626 INFO L124 PetriNetUnfolderBase]: 2658/4390 cut-off events. [2024-10-24 19:21:29,627 INFO L125 PetriNetUnfolderBase]: For 90766/90766 co-relation queries the response was YES. [2024-10-24 19:21:29,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31819 conditions, 4390 events. 2658/4390 cut-off events. For 90766/90766 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 24453 event pairs, 102 based on Foata normal form. 46/4436 useless extension candidates. Maximal degree in co-relation 31007. Up to 871 conditions per place. [2024-10-24 19:21:29,720 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 195 selfloop transitions, 252 changer transitions 2/450 dead transitions. [2024-10-24 19:21:29,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 450 transitions, 7383 flow [2024-10-24 19:21:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 19:21:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 19:21:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 281 transitions. [2024-10-24 19:21:29,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45032051282051283 [2024-10-24 19:21:29,726 INFO L175 Difference]: Start difference. First operand has 169 places, 276 transitions, 4477 flow. Second operand 26 states and 281 transitions. [2024-10-24 19:21:29,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 450 transitions, 7383 flow [2024-10-24 19:21:29,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 450 transitions, 7288 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-10-24 19:21:29,979 INFO L231 Difference]: Finished difference. Result has 204 places, 322 transitions, 6175 flow [2024-10-24 19:21:29,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6175, PETRI_PLACES=204, PETRI_TRANSITIONS=322} [2024-10-24 19:21:29,980 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2024-10-24 19:21:29,980 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 322 transitions, 6175 flow [2024-10-24 19:21:29,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-10-24 19:21:29,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:29,981 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:29,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 19:21:30,181 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,SelfDestructingSolverStorable12 [2024-10-24 19:21:30,182 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:30,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash 564075368, now seen corresponding path program 7 times [2024-10-24 19:21:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904108123] [2024-10-24 19:21:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:30,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:30,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:30,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904108123] [2024-10-24 19:21:30,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904108123] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:30,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809821486] [2024-10-24 19:21:30,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 19:21:30,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:30,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:30,237 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) [2024-10-24 19:21:30,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 19:21:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:30,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:30,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:30,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809821486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:30,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:30,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-24 19:21:30,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772160045] [2024-10-24 19:21:30,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:30,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:21:30,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:21:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:21:30,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:30,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 322 transitions, 6175 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-10-24 19:21:30,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:30,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:30,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:31,356 INFO L124 PetriNetUnfolderBase]: 2664/4412 cut-off events. [2024-10-24 19:21:31,356 INFO L125 PetriNetUnfolderBase]: For 130009/130009 co-relation queries the response was YES. [2024-10-24 19:21:31,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35788 conditions, 4412 events. 2664/4412 cut-off events. For 130009/130009 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 24958 event pairs, 334 based on Foata normal form. 8/4420 useless extension candidates. Maximal degree in co-relation 34854. Up to 1052 conditions per place. [2024-10-24 19:21:31,406 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 234 selfloop transitions, 163 changer transitions 4/402 dead transitions. [2024-10-24 19:21:31,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 402 transitions, 7922 flow [2024-10-24 19:21:31,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 19:21:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 19:21:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-10-24 19:21:31,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-10-24 19:21:31,407 INFO L175 Difference]: Start difference. First operand has 204 places, 322 transitions, 6175 flow. Second operand 13 states and 154 transitions. [2024-10-24 19:21:31,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 402 transitions, 7922 flow [2024-10-24 19:21:31,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 402 transitions, 7475 flow, removed 116 selfloop flow, removed 14 redundant places. [2024-10-24 19:21:31,947 INFO L231 Difference]: Finished difference. Result has 202 places, 320 transitions, 6069 flow [2024-10-24 19:21:31,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5714, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6069, PETRI_PLACES=202, PETRI_TRANSITIONS=320} [2024-10-24 19:21:31,947 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2024-10-24 19:21:31,947 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 320 transitions, 6069 flow [2024-10-24 19:21:31,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-10-24 19:21:31,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:31,948 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:31,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 19:21:32,148 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,SelfDestructingSolverStorable13 [2024-10-24 19:21:32,148 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:32,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash -822306354, now seen corresponding path program 8 times [2024-10-24 19:21:32,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:32,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681881755] [2024-10-24 19:21:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:32,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:32,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681881755] [2024-10-24 19:21:32,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681881755] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135572337] [2024-10-24 19:21:32,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:21:32,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:32,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:32,231 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) [2024-10-24 19:21:32,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 19:21:32,268 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:21:32,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:32,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:32,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:32,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135572337] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:32,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-24 19:21:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43037573] [2024-10-24 19:21:32,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:32,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:21:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:21:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:21:32,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:32,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 320 transitions, 6069 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2024-10-24 19:21:32,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:32,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:32,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:33,553 INFO L124 PetriNetUnfolderBase]: 2908/4796 cut-off events. [2024-10-24 19:21:33,554 INFO L125 PetriNetUnfolderBase]: For 152503/152503 co-relation queries the response was YES. [2024-10-24 19:21:33,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39790 conditions, 4796 events. 2908/4796 cut-off events. For 152503/152503 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26979 event pairs, 169 based on Foata normal form. 54/4850 useless extension candidates. Maximal degree in co-relation 37853. Up to 931 conditions per place. [2024-10-24 19:21:33,608 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 172 selfloop transitions, 310 changer transitions 6/489 dead transitions. [2024-10-24 19:21:33,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 489 transitions, 9318 flow [2024-10-24 19:21:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 19:21:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 19:21:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 270 transitions. [2024-10-24 19:21:33,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-10-24 19:21:33,611 INFO L175 Difference]: Start difference. First operand has 202 places, 320 transitions, 6069 flow. Second operand 26 states and 270 transitions. [2024-10-24 19:21:33,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 489 transitions, 9318 flow [2024-10-24 19:21:34,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 489 transitions, 8939 flow, removed 26 selfloop flow, removed 12 redundant places. [2024-10-24 19:21:34,228 INFO L231 Difference]: Finished difference. Result has 220 places, 380 transitions, 8019 flow [2024-10-24 19:21:34,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5705, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8019, PETRI_PLACES=220, PETRI_TRANSITIONS=380} [2024-10-24 19:21:34,229 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 194 predicate places. [2024-10-24 19:21:34,229 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 380 transitions, 8019 flow [2024-10-24 19:21:34,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2024-10-24 19:21:34,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:34,229 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:34,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 19:21:34,430 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,SelfDestructingSolverStorable14 [2024-10-24 19:21:34,430 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:34,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash -281848868, now seen corresponding path program 9 times [2024-10-24 19:21:34,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:34,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344786101] [2024-10-24 19:21:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:34,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:34,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:34,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344786101] [2024-10-24 19:21:34,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344786101] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:34,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373227494] [2024-10-24 19:21:34,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:21:34,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:34,504 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) [2024-10-24 19:21:34,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 19:21:34,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 19:21:34,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:34,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:34,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:34,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:34,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373227494] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:34,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:34,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-24 19:21:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424308912] [2024-10-24 19:21:34,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:34,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 19:21:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 19:21:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-24 19:21:34,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:34,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 380 transitions, 8019 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2024-10-24 19:21:34,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:34,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:34,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:35,929 INFO L124 PetriNetUnfolderBase]: 3264/5430 cut-off events. [2024-10-24 19:21:35,929 INFO L125 PetriNetUnfolderBase]: For 195777/195777 co-relation queries the response was YES. [2024-10-24 19:21:35,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47741 conditions, 5430 events. 3264/5430 cut-off events. For 195777/195777 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 31826 event pairs, 157 based on Foata normal form. 30/5460 useless extension candidates. Maximal degree in co-relation 45020. Up to 1116 conditions per place. [2024-10-24 19:21:36,072 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 240 selfloop transitions, 330 changer transitions 6/577 dead transitions. [2024-10-24 19:21:36,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 577 transitions, 12021 flow [2024-10-24 19:21:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-24 19:21:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-24 19:21:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 304 transitions. [2024-10-24 19:21:36,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2024-10-24 19:21:36,074 INFO L175 Difference]: Start difference. First operand has 220 places, 380 transitions, 8019 flow. Second operand 29 states and 304 transitions. [2024-10-24 19:21:36,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 577 transitions, 12021 flow [2024-10-24 19:21:37,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 577 transitions, 11533 flow, removed 114 selfloop flow, removed 14 redundant places. [2024-10-24 19:21:37,233 INFO L231 Difference]: Finished difference. Result has 239 places, 429 transitions, 9703 flow [2024-10-24 19:21:37,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7588, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9703, PETRI_PLACES=239, PETRI_TRANSITIONS=429} [2024-10-24 19:21:37,234 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 213 predicate places. [2024-10-24 19:21:37,234 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 429 transitions, 9703 flow [2024-10-24 19:21:37,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2024-10-24 19:21:37,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:37,234 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:37,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 19:21:37,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 19:21:37,435 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:37,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1052008316, now seen corresponding path program 10 times [2024-10-24 19:21:37,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:37,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153244138] [2024-10-24 19:21:37,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:37,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:37,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153244138] [2024-10-24 19:21:37,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153244138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:37,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665917008] [2024-10-24 19:21:37,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:21:37,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:37,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:37,487 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:21:37,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 19:21:37,522 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:21:37,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:37,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:37,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:37,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:37,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665917008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:37,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:37,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-24 19:21:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818415143] [2024-10-24 19:21:37,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:37,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 19:21:37,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 19:21:37,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-10-24 19:21:37,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:37,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 429 transitions, 9703 flow. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 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) [2024-10-24 19:21:37,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:37,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:37,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:38,898 INFO L124 PetriNetUnfolderBase]: 3694/6123 cut-off events. [2024-10-24 19:21:38,898 INFO L125 PetriNetUnfolderBase]: For 262108/262108 co-relation queries the response was YES. [2024-10-24 19:21:38,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55729 conditions, 6123 events. 3694/6123 cut-off events. For 262108/262108 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 36600 event pairs, 1307 based on Foata normal form. 18/6141 useless extension candidates. Maximal degree in co-relation 53471. Up to 4660 conditions per place. [2024-10-24 19:21:39,000 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 471 selfloop transitions, 72 changer transitions 2/546 dead transitions. [2024-10-24 19:21:39,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 546 transitions, 12514 flow [2024-10-24 19:21:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 19:21:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 19:21:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-10-24 19:21:39,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-10-24 19:21:39,002 INFO L175 Difference]: Start difference. First operand has 239 places, 429 transitions, 9703 flow. Second operand 16 states and 173 transitions. [2024-10-24 19:21:39,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 546 transitions, 12514 flow [2024-10-24 19:21:40,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 546 transitions, 11999 flow, removed 46 selfloop flow, removed 14 redundant places. [2024-10-24 19:21:40,826 INFO L231 Difference]: Finished difference. Result has 246 places, 462 transitions, 10163 flow [2024-10-24 19:21:40,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9248, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10163, PETRI_PLACES=246, PETRI_TRANSITIONS=462} [2024-10-24 19:21:40,828 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 220 predicate places. [2024-10-24 19:21:40,828 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 462 transitions, 10163 flow [2024-10-24 19:21:40,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 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) [2024-10-24 19:21:40,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:40,828 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:40,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-24 19:21:41,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 19:21:41,029 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:41,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:41,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1699324732, now seen corresponding path program 11 times [2024-10-24 19:21:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:41,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471102404] [2024-10-24 19:21:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:41,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:41,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:41,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471102404] [2024-10-24 19:21:41,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471102404] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618546135] [2024-10-24 19:21:41,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:21:41,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:41,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:41,080 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:21:41,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 19:21:41,129 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 19:21:41,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:41,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:41,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:41,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:41,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618546135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:41,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:41,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-24 19:21:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569874] [2024-10-24 19:21:41,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:41,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 19:21:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 19:21:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-24 19:21:41,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:41,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 462 transitions, 10163 flow. Second operand has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 states have internal predecessors, (102), 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) [2024-10-24 19:21:41,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:41,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:41,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:42,946 INFO L124 PetriNetUnfolderBase]: 4052/6692 cut-off events. [2024-10-24 19:21:42,946 INFO L125 PetriNetUnfolderBase]: For 320135/320135 co-relation queries the response was YES. [2024-10-24 19:21:42,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61976 conditions, 6692 events. 4052/6692 cut-off events. For 320135/320135 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 40325 event pairs, 633 based on Foata normal form. 84/6776 useless extension candidates. Maximal degree in co-relation 59745. Up to 2935 conditions per place. [2024-10-24 19:21:43,130 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 357 selfloop transitions, 252 changer transitions 3/613 dead transitions. [2024-10-24 19:21:43,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 613 transitions, 13774 flow [2024-10-24 19:21:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 19:21:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 19:21:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 224 transitions. [2024-10-24 19:21:43,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-24 19:21:43,132 INFO L175 Difference]: Start difference. First operand has 246 places, 462 transitions, 10163 flow. Second operand 20 states and 224 transitions. [2024-10-24 19:21:43,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 613 transitions, 13774 flow [2024-10-24 19:21:44,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 613 transitions, 13449 flow, removed 130 selfloop flow, removed 6 redundant places. [2024-10-24 19:21:44,748 INFO L231 Difference]: Finished difference. Result has 271 places, 496 transitions, 11838 flow [2024-10-24 19:21:44,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9861, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11838, PETRI_PLACES=271, PETRI_TRANSITIONS=496} [2024-10-24 19:21:44,749 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 245 predicate places. [2024-10-24 19:21:44,749 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 496 transitions, 11838 flow [2024-10-24 19:21:44,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 states have internal predecessors, (102), 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) [2024-10-24 19:21:44,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:44,750 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:44,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-24 19:21:44,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 19:21:44,954 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:44,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 337672886, now seen corresponding path program 12 times [2024-10-24 19:21:44,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:44,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265896646] [2024-10-24 19:21:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:44,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:45,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:45,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265896646] [2024-10-24 19:21:45,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265896646] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:45,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170770634] [2024-10-24 19:21:45,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 19:21:45,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:45,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:45,026 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:21:45,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 19:21:45,063 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-24 19:21:45,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:45,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:45,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:45,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:21:45,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170770634] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:45,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:45,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-24 19:21:45,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840247033] [2024-10-24 19:21:45,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:45,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:21:45,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:45,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:21:45,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:21:45,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:45,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 496 transitions, 11838 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2024-10-24 19:21:45,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:45,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:46,705 INFO L124 PetriNetUnfolderBase]: 4253/7014 cut-off events. [2024-10-24 19:21:46,706 INFO L125 PetriNetUnfolderBase]: For 401491/401491 co-relation queries the response was YES. [2024-10-24 19:21:46,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69530 conditions, 7014 events. 4253/7014 cut-off events. For 401491/401491 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42440 event pairs, 615 based on Foata normal form. 54/7068 useless extension candidates. Maximal degree in co-relation 68976. Up to 2716 conditions per place. [2024-10-24 19:21:46,799 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 329 selfloop transitions, 283 changer transitions 2/615 dead transitions. [2024-10-24 19:21:46,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 615 transitions, 14976 flow [2024-10-24 19:21:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 19:21:46,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 19:21:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 205 transitions. [2024-10-24 19:21:46,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-10-24 19:21:46,800 INFO L175 Difference]: Start difference. First operand has 271 places, 496 transitions, 11838 flow. Second operand 20 states and 205 transitions. [2024-10-24 19:21:46,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 615 transitions, 14976 flow [2024-10-24 19:21:48,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 615 transitions, 14593 flow, removed 176 selfloop flow, removed 3 redundant places. [2024-10-24 19:21:48,767 INFO L231 Difference]: Finished difference. Result has 294 places, 519 transitions, 13240 flow [2024-10-24 19:21:48,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11540, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=13240, PETRI_PLACES=294, PETRI_TRANSITIONS=519} [2024-10-24 19:21:48,768 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 268 predicate places. [2024-10-24 19:21:48,769 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 519 transitions, 13240 flow [2024-10-24 19:21:48,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2024-10-24 19:21:48,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:48,769 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:48,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-24 19:21:48,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:48,970 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:48,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:48,970 INFO L85 PathProgramCache]: Analyzing trace with hash -562072520, now seen corresponding path program 13 times [2024-10-24 19:21:48,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:48,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119162725] [2024-10-24 19:21:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:48,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:49,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:49,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119162725] [2024-10-24 19:21:49,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119162725] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:49,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125259026] [2024-10-24 19:21:49,027 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 19:21:49,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:49,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:49,028 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:21:49,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 19:21:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:49,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:21:49,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:49,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:49,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125259026] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:49,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:49,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-24 19:21:49,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698258621] [2024-10-24 19:21:49,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:49,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:21:49,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:49,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:21:49,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:21:49,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:21:49,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 519 transitions, 13240 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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) [2024-10-24 19:21:49,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:49,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:21:49,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:50,829 INFO L124 PetriNetUnfolderBase]: 4250/7009 cut-off events. [2024-10-24 19:21:50,830 INFO L125 PetriNetUnfolderBase]: For 432427/432427 co-relation queries the response was YES. [2024-10-24 19:21:50,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72295 conditions, 7009 events. 4250/7009 cut-off events. For 432427/432427 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 42652 event pairs, 1553 based on Foata normal form. 8/7017 useless extension candidates. Maximal degree in co-relation 71626. Up to 5629 conditions per place. [2024-10-24 19:21:50,900 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 500 selfloop transitions, 71 changer transitions 2/574 dead transitions. [2024-10-24 19:21:50,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 574 transitions, 15103 flow [2024-10-24 19:21:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:21:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:21:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-10-24 19:21:50,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-10-24 19:21:50,901 INFO L175 Difference]: Start difference. First operand has 294 places, 519 transitions, 13240 flow. Second operand 11 states and 126 transitions. [2024-10-24 19:21:50,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 574 transitions, 15103 flow [2024-10-24 19:21:52,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 574 transitions, 14847 flow, removed 84 selfloop flow, removed 13 redundant places. [2024-10-24 19:21:52,706 INFO L231 Difference]: Finished difference. Result has 289 places, 516 transitions, 13129 flow [2024-10-24 19:21:52,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12964, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13129, PETRI_PLACES=289, PETRI_TRANSITIONS=516} [2024-10-24 19:21:52,707 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 263 predicate places. [2024-10-24 19:21:52,707 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 516 transitions, 13129 flow [2024-10-24 19:21:52,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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) [2024-10-24 19:21:52,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:52,707 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:21:52,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-24 19:21:52,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:52,908 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:21:52,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash 572267720, now seen corresponding path program 14 times [2024-10-24 19:21:52,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:21:52,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902439090] [2024-10-24 19:21:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:52,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:21:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:21:52,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:21:52,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902439090] [2024-10-24 19:21:52,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902439090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:21:52,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560674787] [2024-10-24 19:21:52,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:21:52,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:21:52,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:21:52,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:21:52,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 19:21:52,998 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:21:52,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:21:52,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:21:52,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:53,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:21:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:53,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560674787] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:21:53,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:21:53,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 7 [2024-10-24 19:21:53,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160253052] [2024-10-24 19:21:53,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:21:53,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:21:53,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:21:53,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:21:53,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:21:53,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-24 19:21:53,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 516 transitions, 13129 flow. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:21:53,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:53,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-24 19:21:53,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:55,515 INFO L124 PetriNetUnfolderBase]: 5726/10205 cut-off events. [2024-10-24 19:21:55,516 INFO L125 PetriNetUnfolderBase]: For 603906/604769 co-relation queries the response was YES. [2024-10-24 19:21:55,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103568 conditions, 10205 events. 5726/10205 cut-off events. For 603906/604769 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 75728 event pairs, 531 based on Foata normal form. 350/10439 useless extension candidates. Maximal degree in co-relation 101924. Up to 2568 conditions per place. [2024-10-24 19:21:55,680 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 895 selfloop transitions, 10 changer transitions 99/1165 dead transitions. [2024-10-24 19:21:55,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1165 transitions, 32212 flow [2024-10-24 19:21:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:21:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:21:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-10-24 19:21:55,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-10-24 19:21:55,681 INFO L175 Difference]: Start difference. First operand has 289 places, 516 transitions, 13129 flow. Second operand 5 states and 85 transitions. [2024-10-24 19:21:55,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1165 transitions, 32212 flow [2024-10-24 19:22:00,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 1165 transitions, 31958 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-24 19:22:00,442 INFO L231 Difference]: Finished difference. Result has 286 places, 512 transitions, 12824 flow [2024-10-24 19:22:00,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13020, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12824, PETRI_PLACES=286, PETRI_TRANSITIONS=512} [2024-10-24 19:22:00,443 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2024-10-24 19:22:00,444 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 512 transitions, 12824 flow [2024-10-24 19:22:00,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:00,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:00,444 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:00,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-24 19:22:00,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:22:00,645 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:22:00,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:00,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1830706175, now seen corresponding path program 15 times [2024-10-24 19:22:00,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:22:00,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714515711] [2024-10-24 19:22:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:00,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:22:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:00,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:22:00,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714515711] [2024-10-24 19:22:00,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714515711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:22:00,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232235976] [2024-10-24 19:22:00,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:22:00,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:22:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:22:00,805 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:22:00,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 19:22:00,848 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-24 19:22:00,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:22:00,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:22:00,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:01,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232235976] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:01,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:22:01,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-24 19:22:01,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40794022] [2024-10-24 19:22:01,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:01,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 19:22:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:22:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 19:22:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-10-24 19:22:01,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:22:01,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 512 transitions, 12824 flow. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:01,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:01,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:22:01,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:05,982 INFO L124 PetriNetUnfolderBase]: 10166/16602 cut-off events. [2024-10-24 19:22:05,982 INFO L125 PetriNetUnfolderBase]: For 1103821/1103821 co-relation queries the response was YES. [2024-10-24 19:22:06,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179725 conditions, 16602 events. 10166/16602 cut-off events. For 1103821/1103821 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 113391 event pairs, 411 based on Foata normal form. 185/16787 useless extension candidates. Maximal degree in co-relation 178035. Up to 3452 conditions per place. [2024-10-24 19:22:06,201 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 462 selfloop transitions, 612 changer transitions 31/1106 dead transitions. [2024-10-24 19:22:06,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1106 transitions, 27655 flow [2024-10-24 19:22:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-24 19:22:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-24 19:22:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 464 transitions. [2024-10-24 19:22:06,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-10-24 19:22:06,203 INFO L175 Difference]: Start difference. First operand has 286 places, 512 transitions, 12824 flow. Second operand 44 states and 464 transitions. [2024-10-24 19:22:06,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1106 transitions, 27655 flow [2024-10-24 19:22:15,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1106 transitions, 27273 flow, removed 191 selfloop flow, removed 0 redundant places. [2024-10-24 19:22:15,263 INFO L231 Difference]: Finished difference. Result has 349 places, 748 transitions, 21761 flow [2024-10-24 19:22:15,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12804, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=21761, PETRI_PLACES=349, PETRI_TRANSITIONS=748} [2024-10-24 19:22:15,264 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 323 predicate places. [2024-10-24 19:22:15,264 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 748 transitions, 21761 flow [2024-10-24 19:22:15,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:15,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:15,265 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:15,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-24 19:22:15,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:22:15,466 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:22:15,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash 325825773, now seen corresponding path program 16 times [2024-10-24 19:22:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:22:15,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384956005] [2024-10-24 19:22:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:15,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:22:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:22:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384956005] [2024-10-24 19:22:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384956005] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:22:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285622731] [2024-10-24 19:22:15,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:22:15,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:22:15,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:22:15,583 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:22:15,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-24 19:22:15,625 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:22:15,626 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:22:15,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:22:15,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:15,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:15,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285622731] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:15,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:22:15,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-24 19:22:15,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252173902] [2024-10-24 19:22:15,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:15,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:22:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:22:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:22:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:22:15,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:22:15,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 748 transitions, 21761 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2024-10-24 19:22:15,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:15,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:22:15,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:21,873 INFO L124 PetriNetUnfolderBase]: 12327/20115 cut-off events. [2024-10-24 19:22:21,874 INFO L125 PetriNetUnfolderBase]: For 1748771/1748771 co-relation queries the response was YES. [2024-10-24 19:22:22,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237117 conditions, 20115 events. 12327/20115 cut-off events. For 1748771/1748771 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 140557 event pairs, 623 based on Foata normal form. 71/20186 useless extension candidates. Maximal degree in co-relation 235115. Up to 6748 conditions per place. [2024-10-24 19:22:22,408 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 448 selfloop transitions, 886 changer transitions 86/1421 dead transitions. [2024-10-24 19:22:22,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1421 transitions, 41996 flow [2024-10-24 19:22:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-24 19:22:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-24 19:22:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 205 transitions. [2024-10-24 19:22:22,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44956140350877194 [2024-10-24 19:22:22,410 INFO L175 Difference]: Start difference. First operand has 349 places, 748 transitions, 21761 flow. Second operand 19 states and 205 transitions. [2024-10-24 19:22:22,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1421 transitions, 41996 flow [2024-10-24 19:22:39,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1421 transitions, 39885 flow, removed 649 selfloop flow, removed 16 redundant places. [2024-10-24 19:22:39,354 INFO L231 Difference]: Finished difference. Result has 360 places, 1133 transitions, 35198 flow [2024-10-24 19:22:39,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20825, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=511, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=35198, PETRI_PLACES=360, PETRI_TRANSITIONS=1133} [2024-10-24 19:22:39,355 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 334 predicate places. [2024-10-24 19:22:39,356 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 1133 transitions, 35198 flow [2024-10-24 19:22:39,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2024-10-24 19:22:39,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:39,356 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:39,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-24 19:22:39,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:22:39,556 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:22:39,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:39,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1788707173, now seen corresponding path program 17 times [2024-10-24 19:22:39,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:22:39,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953359534] [2024-10-24 19:22:39,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:39,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:22:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:39,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:22:39,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953359534] [2024-10-24 19:22:39,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953359534] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:22:39,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739039323] [2024-10-24 19:22:39,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:22:39,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:22:39,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:22:39,627 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:22:39,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-24 19:22:39,668 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-24 19:22:39,668 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:22:39,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:22:39,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:39,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:39,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739039323] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:39,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:22:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-24 19:22:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734017124] [2024-10-24 19:22:39,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:39,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 19:22:39,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:22:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 19:22:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 19:22:39,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-24 19:22:39,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1133 transitions, 35198 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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) [2024-10-24 19:22:39,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:39,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-24 19:22:39,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:49,083 INFO L124 PetriNetUnfolderBase]: 15412/24959 cut-off events. [2024-10-24 19:22:49,083 INFO L125 PetriNetUnfolderBase]: For 2314122/2314122 co-relation queries the response was YES. [2024-10-24 19:22:49,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302057 conditions, 24959 events. 15412/24959 cut-off events. For 2314122/2314122 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 177379 event pairs, 1246 based on Foata normal form. 58/25017 useless extension candidates. Maximal degree in co-relation 300038. Up to 5371 conditions per place. [2024-10-24 19:22:49,682 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 751 selfloop transitions, 773 changer transitions 10/1535 dead transitions. [2024-10-24 19:22:49,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1535 transitions, 47910 flow [2024-10-24 19:22:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 19:22:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 19:22:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 239 transitions. [2024-10-24 19:22:49,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4742063492063492 [2024-10-24 19:22:49,683 INFO L175 Difference]: Start difference. First operand has 360 places, 1133 transitions, 35198 flow. Second operand 21 states and 239 transitions. [2024-10-24 19:22:49,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1535 transitions, 47910 flow