./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-more-nonblocking-counter-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.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 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:56:46,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:56:46,980 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:56:46,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:56:46,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:56:47,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:56:47,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:56:47,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:56:47,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:56:47,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:56:47,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:56:47,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:56:47,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:56:47,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:56:47,012 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:56:47,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:56:47,015 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:56:47,015 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:56:47,015 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:56:47,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:56:47,016 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:56:47,016 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:56:47,016 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:56:47,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:56:47,017 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:56:47,017 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:56:47,017 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:56:47,017 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:56:47,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:56:47,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:56:47,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:56:47,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:56:47,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:56:47,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:47,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:56:47,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:56:47,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:56:47,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:56:47,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:56:47,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:56:47,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:56:47,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:56:47,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2024-10-14 19:56:47,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:56:47,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:56:47,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:56:47,269 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:56:47,269 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:56:47,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-14 19:56:48,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:56:48,794 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:56:48,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-14 19:56:48,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2618116/a1cd3c47cedb4b5186868e83836f6974/FLAG28b022ee9 [2024-10-14 19:56:49,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2618116/a1cd3c47cedb4b5186868e83836f6974 [2024-10-14 19:56:49,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:56:49,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:56:49,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:49,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:56:49,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:56:49,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d47344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49, skipping insertion in model container [2024-10-14 19:56:49,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:49,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:49,385 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:56:49,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:49,421 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:56:49,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49 WrapperNode [2024-10-14 19:56:49,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:49,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:56:49,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:56:49,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:56:49,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,452 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 46 [2024-10-14 19:56:49,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:56:49,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:56:49,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:56:49,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:56:49,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,474 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 19:56:49,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:56:49,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:56:49,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:56:49,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:56:49,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (1/1) ... [2024-10-14 19:56:49,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:49,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:49,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:56:49,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:56:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:56:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:56:49,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:56:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:56:49,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:56:49,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:56:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:56:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:56:49,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:56:49,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:56:49,554 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:56:49,626 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:56:49,628 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:56:49,770 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:56:49,770 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:56:49,965 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:56:49,965 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 19:56:49,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:49 BoogieIcfgContainer [2024-10-14 19:56:49,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:56:49,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:56:49,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:56:49,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:56:49,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:56:49" (1/3) ... [2024-10-14 19:56:49,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728a34f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:49, skipping insertion in model container [2024-10-14 19:56:49,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:49" (2/3) ... [2024-10-14 19:56:49,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728a34f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:49, skipping insertion in model container [2024-10-14 19:56:49,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:49" (3/3) ... [2024-10-14 19:56:49,974 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-14 19:56:49,989 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:56:49,989 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:56:49,989 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:56:50,027 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:56:50,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-10-14 19:56:50,110 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-10-14 19:56:50,110 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:56:50,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-10-14 19:56:50,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-10-14 19:56:50,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-10-14 19:56:50,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:56:50,135 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;@138950aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:56:50,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:56:50,148 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:56:50,149 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-10-14 19:56:50,149 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:56:50,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:50,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:50,151 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)] === [2024-10-14 19:56:50,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash 153611902, now seen corresponding path program 1 times [2024-10-14 19:56:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:56:50,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890049338] [2024-10-14 19:56:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:56:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:50,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:56:50,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890049338] [2024-10-14 19:56:50,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890049338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:50,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:50,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:50,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197271991] [2024-10-14 19:56:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:50,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:56:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:56:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:56:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:56:50,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-10-14 19:56:50,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 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) [2024-10-14 19:56:50,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:50,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-10-14 19:56:50,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:50,574 INFO L124 PetriNetUnfolderBase]: 73/148 cut-off events. [2024-10-14 19:56:50,574 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-14 19:56:50,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 148 events. 73/148 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 436 event pairs, 22 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 256. Up to 74 conditions per place. [2024-10-14 19:56:50,577 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-10-14 19:56:50,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 127 flow [2024-10-14 19:56:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:56:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:56:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-10-14 19:56:50,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-10-14 19:56:50,587 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 3 states and 45 transitions. [2024-10-14 19:56:50,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 127 flow [2024-10-14 19:56:50,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:56:50,591 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 52 flow [2024-10-14 19:56:50,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-10-14 19:56:50,595 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2024-10-14 19:56:50,595 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 52 flow [2024-10-14 19:56:50,595 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) [2024-10-14 19:56:50,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:50,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:50,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:56:50,596 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)] === [2024-10-14 19:56:50,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash 178506475, now seen corresponding path program 1 times [2024-10-14 19:56:50,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:56:50,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273775339] [2024-10-14 19:56:50,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:50,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:56:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:50,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:56:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273775339] [2024-10-14 19:56:50,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273775339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:50,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:50,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:56:50,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308928224] [2024-10-14 19:56:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:50,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:50,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:56:50,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:50,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:56:50,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:50,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:50,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:56:50,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:50,985 INFO L124 PetriNetUnfolderBase]: 142/260 cut-off events. [2024-10-14 19:56:50,986 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-14 19:56:50,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 260 events. 142/260 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 868 event pairs, 81 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 277. Up to 179 conditions per place. [2024-10-14 19:56:50,993 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-10-14 19:56:50,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 117 flow [2024-10-14 19:56:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-10-14 19:56:50,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-10-14 19:56:50,994 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 52 flow. Second operand 4 states and 45 transitions. [2024-10-14 19:56:50,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 117 flow [2024-10-14 19:56:50,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:56:50,995 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-10-14 19:56:50,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-10-14 19:56:50,996 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-10-14 19:56:50,996 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-10-14 19:56:50,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:50,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:50,996 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:50,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:56:50,996 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)] === [2024-10-14 19:56:50,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:50,997 INFO L85 PathProgramCache]: Analyzing trace with hash 808698325, now seen corresponding path program 1 times [2024-10-14 19:56:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:56:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892546145] [2024-10-14 19:56:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:51,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:56:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:51,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:56:51,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892546145] [2024-10-14 19:56:51,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892546145] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:56:51,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961284340] [2024-10-14 19:56:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:51,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:56:51,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:51,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:56:51,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:56:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:51,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:56:51,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:51,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:51,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961284340] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:51,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:56:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 10 [2024-10-14 19:56:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968884451] [2024-10-14 19:56:51,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:51,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:56:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:56:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:56:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:56:51,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-14 19:56:51,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:51,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:51,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-14 19:56:51,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:52,135 INFO L124 PetriNetUnfolderBase]: 428/744 cut-off events. [2024-10-14 19:56:52,135 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-10-14 19:56:52,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 744 events. 428/744 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3078 event pairs, 64 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 598. Up to 184 conditions per place. [2024-10-14 19:56:52,140 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 70 selfloop transitions, 16 changer transitions 13/100 dead transitions. [2024-10-14 19:56:52,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 100 transitions, 493 flow [2024-10-14 19:56:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:56:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:56:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-10-14 19:56:52,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 19:56:52,142 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 10 states and 138 transitions. [2024-10-14 19:56:52,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 100 transitions, 493 flow [2024-10-14 19:56:52,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 100 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:52,145 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 189 flow [2024-10-14 19:56:52,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=189, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-10-14 19:56:52,145 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-10-14 19:56:52,145 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 189 flow [2024-10-14 19:56:52,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:52,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:52,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:52,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:52,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:56:52,351 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)] === [2024-10-14 19:56:52,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1679184239, now seen corresponding path program 2 times [2024-10-14 19:56:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:56:52,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383727082] [2024-10-14 19:56:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:56:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:52,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:56:52,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383727082] [2024-10-14 19:56:52,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383727082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:56:52,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553583601] [2024-10-14 19:56:52,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:52,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:56:52,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:52,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:56:52,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:56:52,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:56:52,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:52,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:56:52,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:52,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:52,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553583601] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:52,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:56:52,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 8] total 16 [2024-10-14 19:56:52,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330182309] [2024-10-14 19:56:52,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:52,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:56:52,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:56:52,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:56:52,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:56:53,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-14 19:56:53,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 189 flow. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:53,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:53,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-14 19:56:53,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:53,543 INFO L124 PetriNetUnfolderBase]: 581/1001 cut-off events. [2024-10-14 19:56:53,543 INFO L125 PetriNetUnfolderBase]: For 1127/1127 co-relation queries the response was YES. [2024-10-14 19:56:53,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1001 events. 581/1001 cut-off events. For 1127/1127 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4615 event pairs, 0 based on Foata normal form. 24/945 useless extension candidates. Maximal degree in co-relation 2742. Up to 225 conditions per place. [2024-10-14 19:56:53,548 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 77 selfloop transitions, 88 changer transitions 9/175 dead transitions. [2024-10-14 19:56:53,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 175 transitions, 1249 flow [2024-10-14 19:56:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-14 19:56:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-14 19:56:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 190 transitions. [2024-10-14 19:56:53,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-10-14 19:56:53,550 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 189 flow. Second operand 20 states and 190 transitions. [2024-10-14 19:56:53,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 175 transitions, 1249 flow [2024-10-14 19:56:53,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 175 transitions, 1214 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-10-14 19:56:53,560 INFO L231 Difference]: Finished difference. Result has 70 places, 118 transitions, 1065 flow [2024-10-14 19:56:53,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1065, PETRI_PLACES=70, PETRI_TRANSITIONS=118} [2024-10-14 19:56:53,561 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 45 predicate places. [2024-10-14 19:56:53,561 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 118 transitions, 1065 flow [2024-10-14 19:56:53,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:53,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:53,561 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:53,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 19:56:53,762 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,SelfDestructingSolverStorable3 [2024-10-14 19:56:53,763 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)] === [2024-10-14 19:56:53,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1441668228, now seen corresponding path program 3 times [2024-10-14 19:56:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:56:53,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630949570] [2024-10-14 19:56:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:56:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:53,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:56:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630949570] [2024-10-14 19:56:53,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630949570] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:56:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024450304] [2024-10-14 19:56:53,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:56:53,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:56:53,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:53,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:56:53,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:56:54,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-14 19:56:54,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:54,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:56:54,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:54,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:54,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024450304] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:54,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:56:54,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-10-14 19:56:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154619165] [2024-10-14 19:56:54,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:54,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:56:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:56:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:56:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:56:54,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:56:54,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 118 transitions, 1065 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:54,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:54,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:56:54,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:54,905 INFO L124 PetriNetUnfolderBase]: 868/1536 cut-off events. [2024-10-14 19:56:54,906 INFO L125 PetriNetUnfolderBase]: For 6590/6618 co-relation queries the response was YES. [2024-10-14 19:56:54,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7035 conditions, 1536 events. 868/1536 cut-off events. For 6590/6618 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8207 event pairs, 62 based on Foata normal form. 20/1548 useless extension candidates. Maximal degree in co-relation 6748. Up to 419 conditions per place. [2024-10-14 19:56:54,917 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 99 selfloop transitions, 140 changer transitions 24/286 dead transitions. [2024-10-14 19:56:54,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 286 transitions, 2906 flow [2024-10-14 19:56:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 19:56:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 19:56:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 189 transitions. [2024-10-14 19:56:54,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-10-14 19:56:54,920 INFO L175 Difference]: Start difference. First operand has 70 places, 118 transitions, 1065 flow. Second operand 18 states and 189 transitions. [2024-10-14 19:56:54,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 286 transitions, 2906 flow [2024-10-14 19:56:54,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 2779 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:54,952 INFO L231 Difference]: Finished difference. Result has 97 places, 209 transitions, 2429 flow [2024-10-14 19:56:54,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2429, PETRI_PLACES=97, PETRI_TRANSITIONS=209} [2024-10-14 19:56:54,953 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 72 predicate places. [2024-10-14 19:56:54,953 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 209 transitions, 2429 flow [2024-10-14 19:56:54,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:54,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:54,954 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:54,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:55,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:56:55,155 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)] === [2024-10-14 19:56:55,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1202640566, now seen corresponding path program 4 times [2024-10-14 19:56:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:56:55,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648564852] [2024-10-14 19:56:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:55,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:56:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:55,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:56:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648564852] [2024-10-14 19:56:55,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648564852] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:56:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660406793] [2024-10-14 19:56:55,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:56:55,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:56:55,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:55,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:56:55,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:56:55,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:56:55,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:55,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:56:55,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:55,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:55,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660406793] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:55,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:56:55,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-14 19:56:55,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167561638] [2024-10-14 19:56:55,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:55,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:56:55,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:56:55,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:56:55,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:56:55,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-14 19:56:55,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 209 transitions, 2429 flow. Second operand has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:55,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:55,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-14 19:56:55,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:56,549 INFO L124 PetriNetUnfolderBase]: 1480/2462 cut-off events. [2024-10-14 19:56:56,549 INFO L125 PetriNetUnfolderBase]: For 22193/22193 co-relation queries the response was YES. [2024-10-14 19:56:56,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14920 conditions, 2462 events. 1480/2462 cut-off events. For 22193/22193 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12836 event pairs, 29 based on Foata normal form. 35/2497 useless extension candidates. Maximal degree in co-relation 14649. Up to 605 conditions per place. [2024-10-14 19:56:56,570 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 224 selfloop transitions, 319 changer transitions 5/549 dead transitions. [2024-10-14 19:56:56,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 549 transitions, 7334 flow [2024-10-14 19:56:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-14 19:56:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-14 19:56:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 276 transitions. [2024-10-14 19:56:56,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-14 19:56:56,572 INFO L175 Difference]: Start difference. First operand has 97 places, 209 transitions, 2429 flow. Second operand 28 states and 276 transitions. [2024-10-14 19:56:56,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 549 transitions, 7334 flow [2024-10-14 19:56:56,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 549 transitions, 7197 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:56,659 INFO L231 Difference]: Finished difference. Result has 140 places, 448 transitions, 6683 flow [2024-10-14 19:56:56,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6683, PETRI_PLACES=140, PETRI_TRANSITIONS=448} [2024-10-14 19:56:56,660 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 115 predicate places. [2024-10-14 19:56:56,660 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 448 transitions, 6683 flow [2024-10-14 19:56:56,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:56,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:56,661 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:56,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 19:56:56,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:56:56,863 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)] === [2024-10-14 19:56:56,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1999851034, now seen corresponding path program 5 times [2024-10-14 19:56:56,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:56:56,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091312867] [2024-10-14 19:56:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:56,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:56:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:57,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:56:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091312867] [2024-10-14 19:56:57,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091312867] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:56:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534493938] [2024-10-14 19:56:57,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:56:57,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:56:57,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:57,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:56:57,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:56:57,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:56:57,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:57,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:56:57,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:57,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:57,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534493938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:57,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:56:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-14 19:56:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542345851] [2024-10-14 19:56:57,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:57,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:56:57,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:56:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:56:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:56:57,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:56:57,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 448 transitions, 6683 flow. Second operand has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:57,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:57,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:56:57,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:59,735 INFO L124 PetriNetUnfolderBase]: 1941/3347 cut-off events. [2024-10-14 19:56:59,736 INFO L125 PetriNetUnfolderBase]: For 51842/51876 co-relation queries the response was YES. [2024-10-14 19:56:59,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24668 conditions, 3347 events. 1941/3347 cut-off events. For 51842/51876 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19607 event pairs, 27 based on Foata normal form. 82/3427 useless extension candidates. Maximal degree in co-relation 22729. Up to 792 conditions per place. [2024-10-14 19:56:59,770 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 176 selfloop transitions, 665 changer transitions 1/883 dead transitions. [2024-10-14 19:56:59,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 883 transitions, 14385 flow [2024-10-14 19:56:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-14 19:56:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-10-14 19:56:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 550 transitions. [2024-10-14 19:56:59,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4122938530734633 [2024-10-14 19:56:59,773 INFO L175 Difference]: Start difference. First operand has 140 places, 448 transitions, 6683 flow. Second operand 58 states and 550 transitions. [2024-10-14 19:56:59,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 883 transitions, 14385 flow [2024-10-14 19:57:00,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 883 transitions, 13472 flow, removed 432 selfloop flow, removed 5 redundant places. [2024-10-14 19:57:00,065 INFO L231 Difference]: Finished difference. Result has 205 places, 744 transitions, 12524 flow [2024-10-14 19:57:00,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=6302, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=12524, PETRI_PLACES=205, PETRI_TRANSITIONS=744} [2024-10-14 19:57:00,067 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 180 predicate places. [2024-10-14 19:57:00,067 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 744 transitions, 12524 flow [2024-10-14 19:57:00,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:00,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:00,067 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:00,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 19:57:00,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:00,268 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)] === [2024-10-14 19:57:00,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1835788314, now seen corresponding path program 6 times [2024-10-14 19:57:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:57:00,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254182935] [2024-10-14 19:57:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:57:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:57:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254182935] [2024-10-14 19:57:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254182935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:57:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297699125] [2024-10-14 19:57:00,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:57:00,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:00,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:57:00,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:57:00,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:57:00,529 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-14 19:57:00,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:00,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:57:00,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:00,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:00,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297699125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:00,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:57:00,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-10-14 19:57:00,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927452471] [2024-10-14 19:57:00,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:00,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 19:57:00,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:57:00,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 19:57:00,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-10-14 19:57:00,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-14 19:57:00,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 744 transitions, 12524 flow. Second operand has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:00,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:00,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-14 19:57:00,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:02,671 INFO L124 PetriNetUnfolderBase]: 2703/4536 cut-off events. [2024-10-14 19:57:02,672 INFO L125 PetriNetUnfolderBase]: For 51490/51490 co-relation queries the response was YES. [2024-10-14 19:57:02,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34453 conditions, 4536 events. 2703/4536 cut-off events. For 51490/51490 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 26879 event pairs, 38 based on Foata normal form. 11/4547 useless extension candidates. Maximal degree in co-relation 33099. Up to 1014 conditions per place. [2024-10-14 19:57:02,715 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 330 selfloop transitions, 830 changer transitions 3/1164 dead transitions. [2024-10-14 19:57:02,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 1164 transitions, 20931 flow [2024-10-14 19:57:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-14 19:57:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-14 19:57:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 359 transitions. [2024-10-14 19:57:02,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107551487414188 [2024-10-14 19:57:02,718 INFO L175 Difference]: Start difference. First operand has 205 places, 744 transitions, 12524 flow. Second operand 38 states and 359 transitions. [2024-10-14 19:57:02,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 1164 transitions, 20931 flow [2024-10-14 19:57:03,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1164 transitions, 19435 flow, removed 641 selfloop flow, removed 7 redundant places. [2024-10-14 19:57:03,259 INFO L231 Difference]: Finished difference. Result has 251 places, 1040 transitions, 18928 flow [2024-10-14 19:57:03,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=11477, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=553, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=18928, PETRI_PLACES=251, PETRI_TRANSITIONS=1040} [2024-10-14 19:57:03,260 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 226 predicate places. [2024-10-14 19:57:03,260 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 1040 transitions, 18928 flow [2024-10-14 19:57:03,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:03,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:03,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:03,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 19:57:03,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:03,461 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)] === [2024-10-14 19:57:03,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:03,462 INFO L85 PathProgramCache]: Analyzing trace with hash -418985660, now seen corresponding path program 7 times [2024-10-14 19:57:03,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:57:03,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798588093] [2024-10-14 19:57:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:03,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:57:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:57:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798588093] [2024-10-14 19:57:03,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798588093] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:57:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380153708] [2024-10-14 19:57:03,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:57:03,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:03,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:57:03,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:57:03,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 19:57:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:03,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:57:03,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:03,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:03,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380153708] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:03,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:57:03,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-10-14 19:57:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018071421] [2024-10-14 19:57:03,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:03,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:57:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:57:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:57:03,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:57:03,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:57:03,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 1040 transitions, 18928 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:03,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:03,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:57:03,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:05,489 INFO L124 PetriNetUnfolderBase]: 2709/4645 cut-off events. [2024-10-14 19:57:05,490 INFO L125 PetriNetUnfolderBase]: For 59421/59435 co-relation queries the response was YES. [2024-10-14 19:57:05,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38389 conditions, 4645 events. 2709/4645 cut-off events. For 59421/59435 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28754 event pairs, 100 based on Foata normal form. 14/4659 useless extension candidates. Maximal degree in co-relation 37955. Up to 1111 conditions per place. [2024-10-14 19:57:05,529 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 321 selfloop transitions, 793 changer transitions 3/1179 dead transitions. [2024-10-14 19:57:05,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1179 transitions, 23385 flow [2024-10-14 19:57:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-14 19:57:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-14 19:57:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 211 transitions. [2024-10-14 19:57:05,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45869565217391306 [2024-10-14 19:57:05,530 INFO L175 Difference]: Start difference. First operand has 251 places, 1040 transitions, 18928 flow. Second operand 20 states and 211 transitions. [2024-10-14 19:57:05,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1179 transitions, 23385 flow [2024-10-14 19:57:06,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1179 transitions, 23063 flow, removed 151 selfloop flow, removed 5 redundant places. [2024-10-14 19:57:06,286 INFO L231 Difference]: Finished difference. Result has 271 places, 1131 transitions, 23216 flow [2024-10-14 19:57:06,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=18564, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=696, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=23216, PETRI_PLACES=271, PETRI_TRANSITIONS=1131} [2024-10-14 19:57:06,288 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 246 predicate places. [2024-10-14 19:57:06,288 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 1131 transitions, 23216 flow [2024-10-14 19:57:06,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:06,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:06,288 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:06,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 19:57:06,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:06,493 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)] === [2024-10-14 19:57:06,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:06,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1514860904, now seen corresponding path program 8 times [2024-10-14 19:57:06,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:57:06,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964024747] [2024-10-14 19:57:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:06,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:57:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:06,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:57:06,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964024747] [2024-10-14 19:57:06,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964024747] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:57:06,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401393235] [2024-10-14 19:57:06,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:06,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:06,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:57:06,636 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:57:06,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 19:57:06,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:57:06,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:06,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:57:06,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:06,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:06,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401393235] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:06,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:57:06,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-14 19:57:06,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788882394] [2024-10-14 19:57:06,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:06,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:57:06,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:57:06,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:57:06,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:57:06,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:57:06,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 1131 transitions, 23216 flow. Second operand has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:06,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:06,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:57:06,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:09,095 INFO L124 PetriNetUnfolderBase]: 3173/5462 cut-off events. [2024-10-14 19:57:09,096 INFO L125 PetriNetUnfolderBase]: For 88624/88634 co-relation queries the response was YES. [2024-10-14 19:57:09,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49821 conditions, 5462 events. 3173/5462 cut-off events. For 88624/88634 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 35025 event pairs, 116 based on Foata normal form. 44/5506 useless extension candidates. Maximal degree in co-relation 49161. Up to 1213 conditions per place. [2024-10-14 19:57:09,148 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 329 selfloop transitions, 1072 changer transitions 4/1467 dead transitions. [2024-10-14 19:57:09,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1467 transitions, 32415 flow [2024-10-14 19:57:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:57:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:57:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 253 transitions. [2024-10-14 19:57:09,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-10-14 19:57:09,150 INFO L175 Difference]: Start difference. First operand has 271 places, 1131 transitions, 23216 flow. Second operand 23 states and 253 transitions. [2024-10-14 19:57:09,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1467 transitions, 32415 flow [2024-10-14 19:57:10,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 1467 transitions, 32166 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-10-14 19:57:10,087 INFO L231 Difference]: Finished difference. Result has 298 places, 1378 transitions, 32649 flow [2024-10-14 19:57:10,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=22973, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=846, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=32649, PETRI_PLACES=298, PETRI_TRANSITIONS=1378} [2024-10-14 19:57:10,089 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 273 predicate places. [2024-10-14 19:57:10,089 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 1378 transitions, 32649 flow [2024-10-14 19:57:10,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:10,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:10,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:10,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:10,289 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,SelfDestructingSolverStorable9 [2024-10-14 19:57:10,292 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)] === [2024-10-14 19:57:10,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash 903812650, now seen corresponding path program 9 times [2024-10-14 19:57:10,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:57:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522420268] [2024-10-14 19:57:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:57:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:10,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:57:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522420268] [2024-10-14 19:57:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522420268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:57:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363746365] [2024-10-14 19:57:10,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:57:10,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:10,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:57:10,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:57:10,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 19:57:10,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-14 19:57:10,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:10,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:57:10,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:10,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:10,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363746365] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:10,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:57:10,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-10-14 19:57:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136048019] [2024-10-14 19:57:10,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:10,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:57:10,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:57:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:57:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:57:10,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:57:10,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1378 transitions, 32649 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:10,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:10,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:57:10,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:13,428 INFO L124 PetriNetUnfolderBase]: 3781/6456 cut-off events. [2024-10-14 19:57:13,428 INFO L125 PetriNetUnfolderBase]: For 141874/141890 co-relation queries the response was YES. [2024-10-14 19:57:13,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66575 conditions, 6456 events. 3781/6456 cut-off events. For 141874/141890 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 42544 event pairs, 158 based on Foata normal form. 40/6496 useless extension candidates. Maximal degree in co-relation 65567. Up to 1338 conditions per place. [2024-10-14 19:57:13,494 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 335 selfloop transitions, 1312 changer transitions 7/1716 dead transitions. [2024-10-14 19:57:13,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1716 transitions, 43478 flow [2024-10-14 19:57:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 19:57:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 19:57:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 246 transitions. [2024-10-14 19:57:13,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44565217391304346 [2024-10-14 19:57:13,496 INFO L175 Difference]: Start difference. First operand has 298 places, 1378 transitions, 32649 flow. Second operand 24 states and 246 transitions. [2024-10-14 19:57:13,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1716 transitions, 43478 flow [2024-10-14 19:57:15,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1716 transitions, 43227 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-10-14 19:57:15,445 INFO L231 Difference]: Finished difference. Result has 330 places, 1634 transitions, 43888 flow [2024-10-14 19:57:15,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=32326, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=43888, PETRI_PLACES=330, PETRI_TRANSITIONS=1634} [2024-10-14 19:57:15,448 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 305 predicate places. [2024-10-14 19:57:15,448 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 1634 transitions, 43888 flow [2024-10-14 19:57:15,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:15,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:15,448 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:15,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 19:57:15,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:15,649 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)] === [2024-10-14 19:57:15,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash -451413604, now seen corresponding path program 10 times [2024-10-14 19:57:15,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:57:15,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934086857] [2024-10-14 19:57:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:15,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:57:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:15,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:57:15,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934086857] [2024-10-14 19:57:15,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934086857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:57:15,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899764883] [2024-10-14 19:57:15,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:57:15,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:15,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:57:15,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:57:15,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 19:57:15,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:57:15,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:15,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:57:15,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:15,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899764883] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:16,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:57:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-10-14 19:57:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992691201] [2024-10-14 19:57:16,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:16,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 19:57:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:57:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 19:57:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-10-14 19:57:16,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-14 19:57:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1634 transitions, 43888 flow. Second operand has 19 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 19 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:16,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:16,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-14 19:57:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:21,826 INFO L124 PetriNetUnfolderBase]: 6182/10221 cut-off events. [2024-10-14 19:57:21,826 INFO L125 PetriNetUnfolderBase]: For 244946/244946 co-relation queries the response was YES. [2024-10-14 19:57:21,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115843 conditions, 10221 events. 6182/10221 cut-off events. For 244946/244946 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 67399 event pairs, 82 based on Foata normal form. 104/10325 useless extension candidates. Maximal degree in co-relation 115051. Up to 2179 conditions per place. [2024-10-14 19:57:21,970 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 760 selfloop transitions, 2085 changer transitions 24/2870 dead transitions. [2024-10-14 19:57:21,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 2870 transitions, 82199 flow [2024-10-14 19:57:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-14 19:57:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-10-14 19:57:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 450 transitions. [2024-10-14 19:57:21,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4162812210915819 [2024-10-14 19:57:21,973 INFO L175 Difference]: Start difference. First operand has 330 places, 1634 transitions, 43888 flow. Second operand 47 states and 450 transitions. [2024-10-14 19:57:21,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 2870 transitions, 82199 flow [2024-10-14 19:57:28,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 2870 transitions, 81172 flow, removed 407 selfloop flow, removed 4 redundant places. [2024-10-14 19:57:28,259 INFO L231 Difference]: Finished difference. Result has 400 places, 2632 transitions, 79783 flow [2024-10-14 19:57:28,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=43160, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=79783, PETRI_PLACES=400, PETRI_TRANSITIONS=2632} [2024-10-14 19:57:28,262 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 375 predicate places. [2024-10-14 19:57:28,262 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 2632 transitions, 79783 flow [2024-10-14 19:57:28,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 19 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:28,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:28,263 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:28,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 19:57:28,463 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,SelfDestructingSolverStorable11 [2024-10-14 19:57:28,464 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)] === [2024-10-14 19:57:28,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:28,464 INFO L85 PathProgramCache]: Analyzing trace with hash -18666850, now seen corresponding path program 11 times [2024-10-14 19:57:28,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:57:28,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822036727] [2024-10-14 19:57:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:57:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:28,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:57:28,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822036727] [2024-10-14 19:57:28,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822036727] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:57:28,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074522108] [2024-10-14 19:57:28,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:57:28,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:28,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:57:28,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:57:28,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 19:57:28,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-14 19:57:28,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:28,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:57:28,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:28,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:28,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074522108] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:28,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:57:28,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-10-14 19:57:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315236656] [2024-10-14 19:57:28,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:28,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:57:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:57:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:57:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:57:28,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:57:28,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 2632 transitions, 79783 flow. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:28,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:28,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:57:28,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:36,470 INFO L124 PetriNetUnfolderBase]: 6857/11635 cut-off events. [2024-10-14 19:57:36,470 INFO L125 PetriNetUnfolderBase]: For 376016/376085 co-relation queries the response was YES. [2024-10-14 19:57:36,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148314 conditions, 11635 events. 6857/11635 cut-off events. For 376016/376085 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 81028 event pairs, 596 based on Foata normal form. 100/11732 useless extension candidates. Maximal degree in co-relation 147836. Up to 4368 conditions per place. [2024-10-14 19:57:36,620 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1532 selfloop transitions, 1647 changer transitions 3/3293 dead transitions. [2024-10-14 19:57:36,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 3293 transitions, 105572 flow [2024-10-14 19:57:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 19:57:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-14 19:57:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 282 transitions. [2024-10-14 19:57:36,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45410628019323673 [2024-10-14 19:57:36,621 INFO L175 Difference]: Start difference. First operand has 400 places, 2632 transitions, 79783 flow. Second operand 27 states and 282 transitions. [2024-10-14 19:57:36,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 3293 transitions, 105572 flow [2024-10-14 19:57:46,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 3293 transitions, 104849 flow, removed 313 selfloop flow, removed 7 redundant places. [2024-10-14 19:57:47,014 INFO L231 Difference]: Finished difference. Result has 440 places, 3003 transitions, 97294 flow [2024-10-14 19:57:47,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=79058, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=97294, PETRI_PLACES=440, PETRI_TRANSITIONS=3003} [2024-10-14 19:57:47,017 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 415 predicate places. [2024-10-14 19:57:47,017 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 3003 transitions, 97294 flow [2024-10-14 19:57:47,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:47,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:47,018 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:47,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:47,218 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,SelfDestructingSolverStorable12 [2024-10-14 19:57:47,218 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)] === [2024-10-14 19:57:47,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2125450970, now seen corresponding path program 12 times [2024-10-14 19:57:47,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:57:47,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822528312] [2024-10-14 19:57:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:57:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:47,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:57:47,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822528312] [2024-10-14 19:57:47,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822528312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:57:47,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913333288] [2024-10-14 19:57:47,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:57:47,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:57:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:57:47,345 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) [2024-10-14 19:57:47,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 19:57:47,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-14 19:57:47,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:47,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:57:47,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:47,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:47,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913333288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:47,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:57:47,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-10-14 19:57:47,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586591040] [2024-10-14 19:57:47,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:47,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:57:47,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:57:47,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:57:47,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:57:47,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:57:47,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 3003 transitions, 97294 flow. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:47,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:47,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:57:47,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:56,806 INFO L124 PetriNetUnfolderBase]: 7238/12336 cut-off events. [2024-10-14 19:57:56,807 INFO L125 PetriNetUnfolderBase]: For 472714/472761 co-relation queries the response was YES. [2024-10-14 19:57:56,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166145 conditions, 12336 events. 7238/12336 cut-off events. For 472714/472761 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 87539 event pairs, 594 based on Foata normal form. 62/12392 useless extension candidates. Maximal degree in co-relation 165677. Up to 4552 conditions per place. [2024-10-14 19:57:56,987 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1360 selfloop transitions, 1814 changer transitions 2/3287 dead transitions. [2024-10-14 19:57:56,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 3287 transitions, 112054 flow [2024-10-14 19:57:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 19:57:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 19:57:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 254 transitions. [2024-10-14 19:57:56,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2024-10-14 19:57:56,989 INFO L175 Difference]: Start difference. First operand has 440 places, 3003 transitions, 97294 flow. Second operand 24 states and 254 transitions. [2024-10-14 19:57:56,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 3287 transitions, 112054 flow [2024-10-14 19:58:08,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 3287 transitions, 111635 flow, removed 171 selfloop flow, removed 4 redundant places. [2024-10-14 19:58:08,741 INFO L231 Difference]: Finished difference. Result has 467 places, 3148 transitions, 108699 flow [2024-10-14 19:58:08,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=96752, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1668, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=108699, PETRI_PLACES=467, PETRI_TRANSITIONS=3148} [2024-10-14 19:58:08,744 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 442 predicate places. [2024-10-14 19:58:08,744 INFO L471 AbstractCegarLoop]: Abstraction has has 467 places, 3148 transitions, 108699 flow [2024-10-14 19:58:08,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:58:08,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:58:08,744 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:58:08,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 19:58:08,944 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,SelfDestructingSolverStorable13 [2024-10-14 19:58:08,945 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)] === [2024-10-14 19:58:08,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:58:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2006878916, now seen corresponding path program 13 times [2024-10-14 19:58:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:58:08,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882238495] [2024-10-14 19:58:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:58:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:58:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:58:09,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:58:09,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882238495] [2024-10-14 19:58:09,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882238495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:58:09,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063367986] [2024-10-14 19:58:09,056 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:58:09,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:58:09,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:58:09,058 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) [2024-10-14 19:58:09,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 19:58:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:58:09,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:58:09,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:58:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:58:09,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:58:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:58:09,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063367986] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:58:09,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:58:09,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-10-14 19:58:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742414949] [2024-10-14 19:58:09,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:58:09,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:58:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:58:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:58:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:58:09,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-14 19:58:09,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 3148 transitions, 108699 flow. Second operand has 18 states, 18 states have (on average 7.055555555555555) internal successors, (127), 18 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:58:09,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:58:09,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-14 19:58:09,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:58:20,365 INFO L124 PetriNetUnfolderBase]: 7274/12384 cut-off events. [2024-10-14 19:58:20,365 INFO L125 PetriNetUnfolderBase]: For 552138/552181 co-relation queries the response was YES. [2024-10-14 19:58:20,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175810 conditions, 12384 events. 7274/12384 cut-off events. For 552138/552181 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 87794 event pairs, 1222 based on Foata normal form. 30/12411 useless extension candidates. Maximal degree in co-relation 174574. Up to 7345 conditions per place. [2024-10-14 19:58:20,633 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 1559 selfloop transitions, 1512 changer transitions 7/3189 dead transitions. [2024-10-14 19:58:20,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 3189 transitions, 115821 flow [2024-10-14 19:58:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 19:58:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 19:58:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-10-14 19:58:20,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.431438127090301 [2024-10-14 19:58:20,635 INFO L175 Difference]: Start difference. First operand has 467 places, 3148 transitions, 108699 flow. Second operand 13 states and 129 transitions. [2024-10-14 19:58:20,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 3189 transitions, 115821 flow