./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-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 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-nonblocking-cntr-alt.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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:48:22,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:48:22,279 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:48:22,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:48:22,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:48:22,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:48:22,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:48:22,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:48:22,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:48:22,330 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:48:22,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:48:22,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:48:22,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:48:22,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:48:22,335 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:48:22,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:48:22,336 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:48:22,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:48:22,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:48:22,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:48:22,337 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:48:22,338 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:48:22,340 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:48:22,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:48:22,340 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:48:22,340 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:48:22,341 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:48:22,341 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:48:22,341 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:48:22,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:48:22,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:48:22,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:48:22,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:48:22,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:48:22,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:48:22,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:48:22,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:48:22,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:48:22,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:48:22,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:48:22,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:48:22,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:48:22,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-20 17:48:22,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:48:22,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:48:22,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:48:22,672 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:48:22,673 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:48:22,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-20 17:48:24,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:48:24,359 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:48:24,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-20 17:48:24,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36104f87c/b818cbe87fce46f18733786b8fda3f3a/FLAGf5adbc48e [2024-11-20 17:48:24,378 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36104f87c/b818cbe87fce46f18733786b8fda3f3a [2024-11-20 17:48:24,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:48:24,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:48:24,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:48:24,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:48:24,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:48:24,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11602bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24, skipping insertion in model container [2024-11-20 17:48:24,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,415 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:48:24,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:48:24,615 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:48:24,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:48:24,649 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:48:24,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24 WrapperNode [2024-11-20 17:48:24,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:48:24,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:48:24,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:48:24,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:48:24,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,682 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2024-11-20 17:48:24,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:48:24,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:48:24,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:48:24,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:48:24,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,710 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 17:48:24,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:48:24,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:48:24,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:48:24,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:48:24,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (1/1) ... [2024-11-20 17:48:24,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:48:24,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:24,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 17:48:24,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 17:48:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:48:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:48:24,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:48:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:48:24,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:48:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:48:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 17:48:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 17:48:24,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:48:24,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:48:24,792 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:48:24,867 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:48:24,869 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:48:25,016 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:48:25,016 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:48:25,190 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:48:25,190 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:48:25,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:48:25 BoogieIcfgContainer [2024-11-20 17:48:25,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:48:25,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:48:25,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:48:25,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:48:25,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:48:24" (1/3) ... [2024-11-20 17:48:25,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f433c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:48:25, skipping insertion in model container [2024-11-20 17:48:25,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:24" (2/3) ... [2024-11-20 17:48:25,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f433c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:48:25, skipping insertion in model container [2024-11-20 17:48:25,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:48:25" (3/3) ... [2024-11-20 17:48:25,202 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-20 17:48:25,217 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:48:25,218 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:48:25,218 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:48:25,278 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:48:25,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-11-20 17:48:25,351 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-20 17:48:25,351 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:48:25,354 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 19 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. [2024-11-20 17:48:25,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-11-20 17:48:25,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-11-20 17:48:25,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:48:25,377 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;@42d8b97f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:48:25,379 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 17:48:25,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:48:25,388 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-20 17:48:25,388 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:48:25,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:25,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:25,390 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)] === [2024-11-20 17:48:25,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1974399478, now seen corresponding path program 1 times [2024-11-20 17:48:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:25,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911563842] [2024-11-20 17:48:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:25,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:25,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:25,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911563842] [2024-11-20 17:48:25,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911563842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:25,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:25,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:48:25,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920150254] [2024-11-20 17:48:25,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:25,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:48:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:25,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:48:25,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:48:25,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-20 17:48:25,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:25,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:25,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-20 17:48:25,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:25,867 INFO L124 PetriNetUnfolderBase]: 61/123 cut-off events. [2024-11-20 17:48:25,867 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-20 17:48:25,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 123 events. 61/123 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 370 event pairs, 31 based on Foata normal form. 10/128 useless extension candidates. Maximal degree in co-relation 213. Up to 86 conditions per place. [2024-11-20 17:48:25,871 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 19 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-11-20 17:48:25,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 109 flow [2024-11-20 17:48:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:48:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:48:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-11-20 17:48:25,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-20 17:48:25,888 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 48 transitions. [2024-11-20 17:48:25,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 109 flow [2024-11-20 17:48:25,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:48:25,895 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-11-20 17:48:25,897 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-20 17:48:25,901 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-11-20 17:48:25,901 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-11-20 17:48:25,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:25,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:25,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:25,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:48:25,903 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)] === [2024-11-20 17:48:25,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1080039208, now seen corresponding path program 1 times [2024-11-20 17:48:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:25,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384281162] [2024-11-20 17:48:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:48:26,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384281162] [2024-11-20 17:48:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384281162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:26,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:26,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:48:26,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177266815] [2024-11-20 17:48:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:26,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:48:26,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:48:26,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:48:26,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-20 17:48:26,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:26,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:26,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-20 17:48:26,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:26,150 INFO L124 PetriNetUnfolderBase]: 89/174 cut-off events. [2024-11-20 17:48:26,150 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-20 17:48:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 174 events. 89/174 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 589 event pairs, 42 based on Foata normal form. 10/177 useless extension candidates. Maximal degree in co-relation 103. Up to 108 conditions per place. [2024-11-20 17:48:26,153 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-20 17:48:26,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 133 flow [2024-11-20 17:48:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:48:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:48:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-11-20 17:48:26,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-20 17:48:26,155 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 48 transitions. [2024-11-20 17:48:26,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 133 flow [2024-11-20 17:48:26,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:48:26,157 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-20 17:48:26,157 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} [2024-11-20 17:48:26,158 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-11-20 17:48:26,159 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-20 17:48:26,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:26,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:26,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:26,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:48:26,160 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)] === [2024-11-20 17:48:26,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash 978789089, now seen corresponding path program 1 times [2024-11-20 17:48:26,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:26,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461007746] [2024-11-20 17:48:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:26,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461007746] [2024-11-20 17:48:26,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461007746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:26,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393266896] [2024-11-20 17:48:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:26,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:26,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:26,622 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) [2024-11-20 17:48:26,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:48:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:26,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:48:26,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:27,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:27,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393266896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:27,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:27,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-20 17:48:27,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091271606] [2024-11-20 17:48:27,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:27,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 17:48:27,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:27,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 17:48:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2024-11-20 17:48:27,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:27,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:27,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:27,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:27,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:29,185 INFO L124 PetriNetUnfolderBase]: 565/989 cut-off events. [2024-11-20 17:48:29,186 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-11-20 17:48:29,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 989 events. 565/989 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4577 event pairs, 13 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 881. Up to 211 conditions per place. [2024-11-20 17:48:29,194 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 123 selfloop transitions, 111 changer transitions 13/248 dead transitions. [2024-11-20 17:48:29,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 248 transitions, 1234 flow [2024-11-20 17:48:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-20 17:48:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-20 17:48:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 389 transitions. [2024-11-20 17:48:29,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4336677814938685 [2024-11-20 17:48:29,198 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 39 states and 389 transitions. [2024-11-20 17:48:29,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 248 transitions, 1234 flow [2024-11-20 17:48:29,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 248 transitions, 1220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:48:29,204 INFO L231 Difference]: Finished difference. Result has 78 places, 149 transitions, 912 flow [2024-11-20 17:48:29,204 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=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=912, PETRI_PLACES=78, PETRI_TRANSITIONS=149} [2024-11-20 17:48:29,205 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2024-11-20 17:48:29,205 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 149 transitions, 912 flow [2024-11-20 17:48:29,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:29,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:29,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:29,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 17:48:29,410 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 [2024-11-20 17:48:29,411 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)] === [2024-11-20 17:48:29,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1609550437, now seen corresponding path program 2 times [2024-11-20 17:48:29,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:29,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304446896] [2024-11-20 17:48:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:29,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:29,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304446896] [2024-11-20 17:48:29,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304446896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885856014] [2024-11-20 17:48:29,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:48:29,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:29,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:29,659 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) [2024-11-20 17:48:29,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 17:48:29,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:48:29,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:29,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:48:29,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:29,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:30,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885856014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:30,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:30,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-20 17:48:30,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298262118] [2024-11-20 17:48:30,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:30,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 17:48:30,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 17:48:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-20 17:48:30,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:30,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 149 transitions, 912 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:30,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:30,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:30,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:31,415 INFO L124 PetriNetUnfolderBase]: 643/1184 cut-off events. [2024-11-20 17:48:31,416 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-11-20 17:48:31,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 1184 events. 643/1184 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5763 event pairs, 31 based on Foata normal form. 3/1187 useless extension candidates. Maximal degree in co-relation 4630. Up to 359 conditions per place. [2024-11-20 17:48:31,442 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 130 selfloop transitions, 115 changer transitions 26/272 dead transitions. [2024-11-20 17:48:31,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 272 transitions, 2184 flow [2024-11-20 17:48:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 17:48:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-20 17:48:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2024-11-20 17:48:31,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4428341384863124 [2024-11-20 17:48:31,449 INFO L175 Difference]: Start difference. First operand has 78 places, 149 transitions, 912 flow. Second operand 27 states and 275 transitions. [2024-11-20 17:48:31,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 272 transitions, 2184 flow [2024-11-20 17:48:31,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 272 transitions, 2088 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-20 17:48:31,481 INFO L231 Difference]: Finished difference. Result has 109 places, 178 transitions, 1390 flow [2024-11-20 17:48:31,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1390, PETRI_PLACES=109, PETRI_TRANSITIONS=178} [2024-11-20 17:48:31,482 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 84 predicate places. [2024-11-20 17:48:31,482 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 178 transitions, 1390 flow [2024-11-20 17:48:31,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:31,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:31,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:31,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 17:48:31,687 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 [2024-11-20 17:48:31,688 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)] === [2024-11-20 17:48:31,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1294723099, now seen corresponding path program 3 times [2024-11-20 17:48:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:31,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319642755] [2024-11-20 17:48:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:31,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:31,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319642755] [2024-11-20 17:48:31,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319642755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:31,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066224875] [2024-11-20 17:48:31,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:48:31,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:31,908 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) [2024-11-20 17:48:31,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 17:48:31,947 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:48:31,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:31,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:48:31,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:32,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:32,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066224875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:32,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:32,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-20 17:48:32,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382993848] [2024-11-20 17:48:32,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:32,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 17:48:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 17:48:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-11-20 17:48:32,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:32,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 178 transitions, 1390 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:32,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:32,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:32,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:33,792 INFO L124 PetriNetUnfolderBase]: 622/1141 cut-off events. [2024-11-20 17:48:33,792 INFO L125 PetriNetUnfolderBase]: For 4871/4871 co-relation queries the response was YES. [2024-11-20 17:48:33,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5303 conditions, 1141 events. 622/1141 cut-off events. For 4871/4871 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5466 event pairs, 28 based on Foata normal form. 1/1142 useless extension candidates. Maximal degree in co-relation 5215. Up to 360 conditions per place. [2024-11-20 17:48:33,803 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 122 selfloop transitions, 124 changer transitions 15/262 dead transitions. [2024-11-20 17:48:33,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 262 transitions, 2458 flow [2024-11-20 17:48:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-20 17:48:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-20 17:48:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 297 transitions. [2024-11-20 17:48:33,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43043478260869567 [2024-11-20 17:48:33,805 INFO L175 Difference]: Start difference. First operand has 109 places, 178 transitions, 1390 flow. Second operand 30 states and 297 transitions. [2024-11-20 17:48:33,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 262 transitions, 2458 flow [2024-11-20 17:48:33,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 262 transitions, 2333 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-11-20 17:48:33,835 INFO L231 Difference]: Finished difference. Result has 130 places, 181 transitions, 1655 flow [2024-11-20 17:48:33,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1655, PETRI_PLACES=130, PETRI_TRANSITIONS=181} [2024-11-20 17:48:33,837 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 105 predicate places. [2024-11-20 17:48:33,837 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 181 transitions, 1655 flow [2024-11-20 17:48:33,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:33,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:33,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:33,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 17:48:34,041 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 [2024-11-20 17:48:34,042 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)] === [2024-11-20 17:48:34,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash -441805595, now seen corresponding path program 4 times [2024-11-20 17:48:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:34,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314958831] [2024-11-20 17:48:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:34,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:34,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314958831] [2024-11-20 17:48:34,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314958831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:34,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167916501] [2024-11-20 17:48:34,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:48:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:34,244 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) [2024-11-20 17:48:34,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 17:48:34,281 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:48:34,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:34,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:48:34,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:34,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:34,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167916501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:34,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:34,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-20 17:48:34,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247902981] [2024-11-20 17:48:34,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:34,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 17:48:34,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 17:48:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2024-11-20 17:48:34,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:34,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 181 transitions, 1655 flow. Second operand has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:34,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:34,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:34,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:36,152 INFO L124 PetriNetUnfolderBase]: 806/1456 cut-off events. [2024-11-20 17:48:36,153 INFO L125 PetriNetUnfolderBase]: For 6627/6627 co-relation queries the response was YES. [2024-11-20 17:48:36,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7383 conditions, 1456 events. 806/1456 cut-off events. For 6627/6627 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7375 event pairs, 27 based on Foata normal form. 3/1459 useless extension candidates. Maximal degree in co-relation 7290. Up to 318 conditions per place. [2024-11-20 17:48:36,167 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 157 selfloop transitions, 204 changer transitions 16/378 dead transitions. [2024-11-20 17:48:36,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 378 transitions, 4032 flow [2024-11-20 17:48:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-20 17:48:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-20 17:48:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 377 transitions. [2024-11-20 17:48:36,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44300822561692127 [2024-11-20 17:48:36,170 INFO L175 Difference]: Start difference. First operand has 130 places, 181 transitions, 1655 flow. Second operand 37 states and 377 transitions. [2024-11-20 17:48:36,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 378 transitions, 4032 flow [2024-11-20 17:48:36,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 378 transitions, 3711 flow, removed 44 selfloop flow, removed 21 redundant places. [2024-11-20 17:48:36,241 INFO L231 Difference]: Finished difference. Result has 155 places, 273 transitions, 2986 flow [2024-11-20 17:48:36,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2986, PETRI_PLACES=155, PETRI_TRANSITIONS=273} [2024-11-20 17:48:36,244 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 130 predicate places. [2024-11-20 17:48:36,244 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 273 transitions, 2986 flow [2024-11-20 17:48:36,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:36,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:36,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:36,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 17:48:36,449 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 [2024-11-20 17:48:36,450 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)] === [2024-11-20 17:48:36,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1126948333, now seen corresponding path program 5 times [2024-11-20 17:48:36,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:36,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973691178] [2024-11-20 17:48:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:36,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:36,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:36,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973691178] [2024-11-20 17:48:36,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973691178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:36,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544930616] [2024-11-20 17:48:36,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:48:36,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:36,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:36,528 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) [2024-11-20 17:48:36,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 17:48:36,571 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:48:36,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:36,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 17:48:36,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:36,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544930616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:36,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:36,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-20 17:48:36,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781712730] [2024-11-20 17:48:36,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:36,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 17:48:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 17:48:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-20 17:48:36,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:48:36,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 273 transitions, 2986 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:36,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:36,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:48:36,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:36,889 INFO L124 PetriNetUnfolderBase]: 722/1320 cut-off events. [2024-11-20 17:48:36,889 INFO L125 PetriNetUnfolderBase]: For 8934/8944 co-relation queries the response was YES. [2024-11-20 17:48:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 1320 events. 722/1320 cut-off events. For 8934/8944 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6575 event pairs, 26 based on Foata normal form. 27/1344 useless extension candidates. Maximal degree in co-relation 7442. Up to 663 conditions per place. [2024-11-20 17:48:36,904 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 163 selfloop transitions, 106 changer transitions 1/303 dead transitions. [2024-11-20 17:48:36,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 303 transitions, 3776 flow [2024-11-20 17:48:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:48:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:48:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-20 17:48:36,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-11-20 17:48:36,905 INFO L175 Difference]: Start difference. First operand has 155 places, 273 transitions, 2986 flow. Second operand 5 states and 59 transitions. [2024-11-20 17:48:36,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 303 transitions, 3776 flow [2024-11-20 17:48:36,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 303 transitions, 3492 flow, removed 83 selfloop flow, removed 12 redundant places. [2024-11-20 17:48:36,977 INFO L231 Difference]: Finished difference. Result has 143 places, 277 transitions, 3195 flow [2024-11-20 17:48:36,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3195, PETRI_PLACES=143, PETRI_TRANSITIONS=277} [2024-11-20 17:48:36,980 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 118 predicate places. [2024-11-20 17:48:36,980 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 277 transitions, 3195 flow [2024-11-20 17:48:36,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:36,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:36,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:36,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 17:48:37,181 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 [2024-11-20 17:48:37,182 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)] === [2024-11-20 17:48:37,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1781100175, now seen corresponding path program 6 times [2024-11-20 17:48:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:37,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634180107] [2024-11-20 17:48:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:37,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:37,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:37,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634180107] [2024-11-20 17:48:37,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634180107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:37,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253013134] [2024-11-20 17:48:37,386 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:48:37,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:37,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:37,389 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) [2024-11-20 17:48:37,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 17:48:37,428 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 17:48:37,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:37,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:48:37,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:37,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:37,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253013134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:37,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:37,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-20 17:48:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476447856] [2024-11-20 17:48:37,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:37,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 17:48:37,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 17:48:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-11-20 17:48:37,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:37,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 277 transitions, 3195 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:37,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:37,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:37,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:38,745 INFO L124 PetriNetUnfolderBase]: 1050/1867 cut-off events. [2024-11-20 17:48:38,745 INFO L125 PetriNetUnfolderBase]: For 11931/11931 co-relation queries the response was YES. [2024-11-20 17:48:38,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11078 conditions, 1867 events. 1050/1867 cut-off events. For 11931/11931 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9912 event pairs, 25 based on Foata normal form. 2/1853 useless extension candidates. Maximal degree in co-relation 10806. Up to 876 conditions per place. [2024-11-20 17:48:38,761 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 192 selfloop transitions, 227 changer transitions 22/442 dead transitions. [2024-11-20 17:48:38,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 442 transitions, 5819 flow [2024-11-20 17:48:38,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 17:48:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 17:48:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 204 transitions. [2024-11-20 17:48:38,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.422360248447205 [2024-11-20 17:48:38,764 INFO L175 Difference]: Start difference. First operand has 143 places, 277 transitions, 3195 flow. Second operand 21 states and 204 transitions. [2024-11-20 17:48:38,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 442 transitions, 5819 flow [2024-11-20 17:48:38,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 442 transitions, 5807 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-20 17:48:38,827 INFO L231 Difference]: Finished difference. Result has 176 places, 372 transitions, 5302 flow [2024-11-20 17:48:38,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5302, PETRI_PLACES=176, PETRI_TRANSITIONS=372} [2024-11-20 17:48:38,830 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 151 predicate places. [2024-11-20 17:48:38,831 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 372 transitions, 5302 flow [2024-11-20 17:48:38,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:38,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:38,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:38,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 17:48:39,032 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 [2024-11-20 17:48:39,032 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)] === [2024-11-20 17:48:39,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:39,033 INFO L85 PathProgramCache]: Analyzing trace with hash -4479771, now seen corresponding path program 7 times [2024-11-20 17:48:39,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:39,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945307600] [2024-11-20 17:48:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945307600] [2024-11-20 17:48:39,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945307600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573926849] [2024-11-20 17:48:39,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:48:39,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:39,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:39,244 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) [2024-11-20 17:48:39,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 17:48:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:39,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:48:39,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:39,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:39,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573926849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:39,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:39,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-20 17:48:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561015863] [2024-11-20 17:48:39,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:39,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 17:48:39,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 17:48:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2024-11-20 17:48:39,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:39,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 372 transitions, 5302 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:39,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:39,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:39,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:40,662 INFO L124 PetriNetUnfolderBase]: 1102/1944 cut-off events. [2024-11-20 17:48:40,662 INFO L125 PetriNetUnfolderBase]: For 17665/17665 co-relation queries the response was YES. [2024-11-20 17:48:40,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13400 conditions, 1944 events. 1102/1944 cut-off events. For 17665/17665 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10256 event pairs, 22 based on Foata normal form. 1/1945 useless extension candidates. Maximal degree in co-relation 13281. Up to 938 conditions per place. [2024-11-20 17:48:40,684 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 213 selfloop transitions, 269 changer transitions 7/490 dead transitions. [2024-11-20 17:48:40,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 490 transitions, 7589 flow [2024-11-20 17:48:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 17:48:40,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-20 17:48:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 239 transitions. [2024-11-20 17:48:40,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3996655518394649 [2024-11-20 17:48:40,686 INFO L175 Difference]: Start difference. First operand has 176 places, 372 transitions, 5302 flow. Second operand 26 states and 239 transitions. [2024-11-20 17:48:40,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 490 transitions, 7589 flow [2024-11-20 17:48:40,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 490 transitions, 7516 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-20 17:48:40,763 INFO L231 Difference]: Finished difference. Result has 202 places, 437 transitions, 7250 flow [2024-11-20 17:48:40,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7250, PETRI_PLACES=202, PETRI_TRANSITIONS=437} [2024-11-20 17:48:40,764 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 177 predicate places. [2024-11-20 17:48:40,764 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 437 transitions, 7250 flow [2024-11-20 17:48:40,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:40,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:40,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:40,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 17:48:40,964 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 [2024-11-20 17:48:40,965 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)] === [2024-11-20 17:48:40,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash -301608987, now seen corresponding path program 8 times [2024-11-20 17:48:40,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:40,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851114176] [2024-11-20 17:48:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:40,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:41,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:41,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851114176] [2024-11-20 17:48:41,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851114176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059121816] [2024-11-20 17:48:41,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:48:41,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:41,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:41,161 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) [2024-11-20 17:48:41,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 17:48:41,201 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:48:41,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:41,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:48:41,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:41,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:41,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059121816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:41,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:41,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-20 17:48:41,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807819054] [2024-11-20 17:48:41,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:41,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 17:48:41,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 17:48:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-11-20 17:48:41,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:41,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 437 transitions, 7250 flow. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:41,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:41,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:41,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:42,554 INFO L124 PetriNetUnfolderBase]: 1141/2014 cut-off events. [2024-11-20 17:48:42,554 INFO L125 PetriNetUnfolderBase]: For 23987/23987 co-relation queries the response was YES. [2024-11-20 17:48:42,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15756 conditions, 2014 events. 1141/2014 cut-off events. For 23987/23987 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10638 event pairs, 26 based on Foata normal form. 2/2016 useless extension candidates. Maximal degree in co-relation 15640. Up to 933 conditions per place. [2024-11-20 17:48:42,574 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 236 selfloop transitions, 265 changer transitions 23/525 dead transitions. [2024-11-20 17:48:42,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 525 transitions, 9491 flow [2024-11-20 17:48:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 17:48:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-20 17:48:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 191 transitions. [2024-11-20 17:48:42,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43707093821510296 [2024-11-20 17:48:42,576 INFO L175 Difference]: Start difference. First operand has 202 places, 437 transitions, 7250 flow. Second operand 19 states and 191 transitions. [2024-11-20 17:48:42,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 525 transitions, 9491 flow [2024-11-20 17:48:42,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 525 transitions, 9312 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:42,713 INFO L231 Difference]: Finished difference. Result has 222 places, 460 transitions, 8514 flow [2024-11-20 17:48:42,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=7128, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8514, PETRI_PLACES=222, PETRI_TRANSITIONS=460} [2024-11-20 17:48:42,714 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 197 predicate places. [2024-11-20 17:48:42,714 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 460 transitions, 8514 flow [2024-11-20 17:48:42,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:42,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:42,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:42,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 17:48:42,914 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 [2024-11-20 17:48:42,915 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)] === [2024-11-20 17:48:42,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:42,915 INFO L85 PathProgramCache]: Analyzing trace with hash 551308517, now seen corresponding path program 9 times [2024-11-20 17:48:42,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:42,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493115049] [2024-11-20 17:48:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:42,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:43,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493115049] [2024-11-20 17:48:43,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493115049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32215891] [2024-11-20 17:48:43,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:48:43,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:43,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:43,114 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) [2024-11-20 17:48:43,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 17:48:43,153 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:48:43,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:43,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:48:43,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:43,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:43,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32215891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:43,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:43,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-20 17:48:43,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648984664] [2024-11-20 17:48:43,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:43,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 17:48:43,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:43,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 17:48:43,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2024-11-20 17:48:43,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:43,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 460 transitions, 8514 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:43,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:43,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:43,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:44,734 INFO L124 PetriNetUnfolderBase]: 1197/2111 cut-off events. [2024-11-20 17:48:44,735 INFO L125 PetriNetUnfolderBase]: For 30433/30433 co-relation queries the response was YES. [2024-11-20 17:48:44,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17999 conditions, 2111 events. 1197/2111 cut-off events. For 30433/30433 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11242 event pairs, 23 based on Foata normal form. 2/2113 useless extension candidates. Maximal degree in co-relation 17858. Up to 936 conditions per place. [2024-11-20 17:48:44,755 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 249 selfloop transitions, 336 changer transitions 13/599 dead transitions. [2024-11-20 17:48:44,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 599 transitions, 11692 flow [2024-11-20 17:48:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-20 17:48:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-20 17:48:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 295 transitions. [2024-11-20 17:48:44,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4008152173913043 [2024-11-20 17:48:44,760 INFO L175 Difference]: Start difference. First operand has 222 places, 460 transitions, 8514 flow. Second operand 32 states and 295 transitions. [2024-11-20 17:48:44,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 599 transitions, 11692 flow [2024-11-20 17:48:44,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 599 transitions, 11424 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-11-20 17:48:45,004 INFO L231 Difference]: Finished difference. Result has 249 places, 527 transitions, 10906 flow [2024-11-20 17:48:45,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=8328, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=10906, PETRI_PLACES=249, PETRI_TRANSITIONS=527} [2024-11-20 17:48:45,005 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 224 predicate places. [2024-11-20 17:48:45,005 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 527 transitions, 10906 flow [2024-11-20 17:48:45,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:45,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:45,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:45,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 17:48:45,206 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 [2024-11-20 17:48:45,206 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)] === [2024-11-20 17:48:45,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2040775869, now seen corresponding path program 10 times [2024-11-20 17:48:45,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:45,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325978018] [2024-11-20 17:48:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:45,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:45,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:45,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325978018] [2024-11-20 17:48:45,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325978018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:45,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290723405] [2024-11-20 17:48:45,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:48:45,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:45,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:45,417 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) [2024-11-20 17:48:45,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 17:48:45,467 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:48:45,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:45,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:48:45,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:45,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290723405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:46,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:46,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-20 17:48:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88081969] [2024-11-20 17:48:46,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:46,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 17:48:46,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 17:48:46,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-11-20 17:48:46,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:46,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 527 transitions, 10906 flow. Second operand has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:46,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:46,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:46,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:47,147 INFO L124 PetriNetUnfolderBase]: 1223/2157 cut-off events. [2024-11-20 17:48:47,147 INFO L125 PetriNetUnfolderBase]: For 36100/36100 co-relation queries the response was YES. [2024-11-20 17:48:47,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20022 conditions, 2157 events. 1223/2157 cut-off events. For 36100/36100 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11563 event pairs, 18 based on Foata normal form. 1/2158 useless extension candidates. Maximal degree in co-relation 19885. Up to 1021 conditions per place. [2024-11-20 17:48:47,177 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 205 selfloop transitions, 394 changer transitions 4/604 dead transitions. [2024-11-20 17:48:47,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 604 transitions, 13204 flow [2024-11-20 17:48:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 17:48:47,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-20 17:48:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 208 transitions. [2024-11-20 17:48:47,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3931947069943289 [2024-11-20 17:48:47,182 INFO L175 Difference]: Start difference. First operand has 249 places, 527 transitions, 10906 flow. Second operand 23 states and 208 transitions. [2024-11-20 17:48:47,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 604 transitions, 13204 flow [2024-11-20 17:48:47,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 604 transitions, 12822 flow, removed 100 selfloop flow, removed 13 redundant places. [2024-11-20 17:48:47,596 INFO L231 Difference]: Finished difference. Result has 262 places, 560 transitions, 12795 flow [2024-11-20 17:48:47,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=10541, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=12795, PETRI_PLACES=262, PETRI_TRANSITIONS=560} [2024-11-20 17:48:47,597 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 237 predicate places. [2024-11-20 17:48:47,597 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 560 transitions, 12795 flow [2024-11-20 17:48:47,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.846153846153846) internal successors, (152), 26 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:47,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:47,598 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:47,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 17:48:47,799 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 [2024-11-20 17:48:47,799 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)] === [2024-11-20 17:48:47,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash 484265376, now seen corresponding path program 11 times [2024-11-20 17:48:47,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:47,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51483125] [2024-11-20 17:48:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:48,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51483125] [2024-11-20 17:48:48,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51483125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:48,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897436334] [2024-11-20 17:48:48,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:48:48,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:48,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:48,011 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) [2024-11-20 17:48:48,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 17:48:48,055 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:48:48,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:48,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 17:48:48,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:48,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:48,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897436334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:48,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:48,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-11-20 17:48:48,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548425767] [2024-11-20 17:48:48,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:48,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-20 17:48:48,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-20 17:48:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2024-11-20 17:48:48,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:48,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 560 transitions, 12795 flow. Second operand has 36 states, 36 states have (on average 5.611111111111111) internal successors, (202), 36 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:48,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:48,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:48,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:50,874 INFO L124 PetriNetUnfolderBase]: 1467/2618 cut-off events. [2024-11-20 17:48:50,874 INFO L125 PetriNetUnfolderBase]: For 56796/56796 co-relation queries the response was YES. [2024-11-20 17:48:50,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26959 conditions, 2618 events. 1467/2618 cut-off events. For 56796/56796 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14732 event pairs, 51 based on Foata normal form. 4/2622 useless extension candidates. Maximal degree in co-relation 26812. Up to 602 conditions per place. [2024-11-20 17:48:50,905 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 296 selfloop transitions, 474 changer transitions 56/827 dead transitions. [2024-11-20 17:48:50,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 827 transitions, 18977 flow [2024-11-20 17:48:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-20 17:48:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-20 17:48:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 498 transitions. [2024-11-20 17:48:50,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4085315832649713 [2024-11-20 17:48:50,908 INFO L175 Difference]: Start difference. First operand has 262 places, 560 transitions, 12795 flow. Second operand 53 states and 498 transitions. [2024-11-20 17:48:50,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 827 transitions, 18977 flow [2024-11-20 17:48:51,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 827 transitions, 18681 flow, removed 105 selfloop flow, removed 12 redundant places. [2024-11-20 17:48:51,382 INFO L231 Difference]: Finished difference. Result has 318 places, 673 transitions, 17082 flow [2024-11-20 17:48:51,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=12571, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=17082, PETRI_PLACES=318, PETRI_TRANSITIONS=673} [2024-11-20 17:48:51,383 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 293 predicate places. [2024-11-20 17:48:51,383 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 673 transitions, 17082 flow [2024-11-20 17:48:51,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.611111111111111) internal successors, (202), 36 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:51,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:51,383 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:51,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 17:48:51,584 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 [2024-11-20 17:48:51,584 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)] === [2024-11-20 17:48:51,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:51,585 INFO L85 PathProgramCache]: Analyzing trace with hash 127477776, now seen corresponding path program 12 times [2024-11-20 17:48:51,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:51,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79566477] [2024-11-20 17:48:51,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:51,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:51,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79566477] [2024-11-20 17:48:51,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79566477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:51,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305143572] [2024-11-20 17:48:51,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:48:51,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:51,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:51,815 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) [2024-11-20 17:48:51,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 17:48:51,855 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-20 17:48:51,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:51,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 17:48:51,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:52,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:52,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305143572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:52,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:52,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-20 17:48:52,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802033242] [2024-11-20 17:48:52,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:52,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-20 17:48:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-20 17:48:52,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 17:48:52,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:52,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 673 transitions, 17082 flow. Second operand has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:52,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:52,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:52,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:56,394 INFO L124 PetriNetUnfolderBase]: 1989/3533 cut-off events. [2024-11-20 17:48:56,395 INFO L125 PetriNetUnfolderBase]: For 91265/91265 co-relation queries the response was YES. [2024-11-20 17:48:56,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39633 conditions, 3533 events. 1989/3533 cut-off events. For 91265/91265 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20685 event pairs, 34 based on Foata normal form. 5/3538 useless extension candidates. Maximal degree in co-relation 39538. Up to 939 conditions per place. [2024-11-20 17:48:56,521 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 365 selfloop transitions, 710 changer transitions 30/1106 dead transitions. [2024-11-20 17:48:56,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1106 transitions, 28062 flow [2024-11-20 17:48:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-20 17:48:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-20 17:48:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 724 transitions. [2024-11-20 17:48:56,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3984589983489268 [2024-11-20 17:48:56,527 INFO L175 Difference]: Start difference. First operand has 318 places, 673 transitions, 17082 flow. Second operand 79 states and 724 transitions. [2024-11-20 17:48:56,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1106 transitions, 28062 flow [2024-11-20 17:48:57,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1106 transitions, 27050 flow, removed 238 selfloop flow, removed 13 redundant places. [2024-11-20 17:48:57,257 INFO L231 Difference]: Finished difference. Result has 392 places, 928 transitions, 25511 flow [2024-11-20 17:48:57,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=16535, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=25511, PETRI_PLACES=392, PETRI_TRANSITIONS=928} [2024-11-20 17:48:57,259 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 367 predicate places. [2024-11-20 17:48:57,259 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 928 transitions, 25511 flow [2024-11-20 17:48:57,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:57,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:57,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:57,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 17:48:57,459 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 [2024-11-20 17:48:57,460 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)] === [2024-11-20 17:48:57,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash 841867130, now seen corresponding path program 13 times [2024-11-20 17:48:57,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:57,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259926767] [2024-11-20 17:48:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:57,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:57,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259926767] [2024-11-20 17:48:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259926767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310953409] [2024-11-20 17:48:57,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:48:57,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:57,654 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) [2024-11-20 17:48:57,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 17:48:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:57,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 17:48:57,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:58,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:58,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310953409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:58,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:58,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-20 17:48:58,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833381587] [2024-11-20 17:48:58,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:58,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-20 17:48:58,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:58,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-20 17:48:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 17:48:58,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:48:58,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 928 transitions, 25511 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:58,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:58,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:48:58,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:49:03,687 INFO L124 PetriNetUnfolderBase]: 2266/4048 cut-off events. [2024-11-20 17:49:03,687 INFO L125 PetriNetUnfolderBase]: For 121805/121805 co-relation queries the response was YES. [2024-11-20 17:49:03,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47306 conditions, 4048 events. 2266/4048 cut-off events. For 121805/121805 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 24800 event pairs, 36 based on Foata normal form. 6/4054 useless extension candidates. Maximal degree in co-relation 46974. Up to 933 conditions per place. [2024-11-20 17:49:03,730 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 406 selfloop transitions, 854 changer transitions 32/1293 dead transitions. [2024-11-20 17:49:03,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1293 transitions, 34441 flow [2024-11-20 17:49:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-20 17:49:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2024-11-20 17:49:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 997 transitions. [2024-11-20 17:49:03,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3836090804155444 [2024-11-20 17:49:03,733 INFO L175 Difference]: Start difference. First operand has 392 places, 928 transitions, 25511 flow. Second operand 113 states and 997 transitions. [2024-11-20 17:49:03,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1293 transitions, 34441 flow [2024-11-20 17:49:05,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1293 transitions, 33417 flow, removed 128 selfloop flow, removed 23 redundant places. [2024-11-20 17:49:05,253 INFO L231 Difference]: Finished difference. Result has 498 places, 1068 transitions, 30995 flow [2024-11-20 17:49:05,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=24656, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=732, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=30995, PETRI_PLACES=498, PETRI_TRANSITIONS=1068} [2024-11-20 17:49:05,254 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 473 predicate places. [2024-11-20 17:49:05,254 INFO L471 AbstractCegarLoop]: Abstraction has has 498 places, 1068 transitions, 30995 flow [2024-11-20 17:49:05,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:49:05,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:49:05,255 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:49:05,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 17:49:05,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 17:49:05,455 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:49:05,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:49:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash -214226062, now seen corresponding path program 14 times [2024-11-20 17:49:05,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:49:05,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914407072] [2024-11-20 17:49:05,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:49:05,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:49:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:49:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:49:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914407072] [2024-11-20 17:49:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914407072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:49:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194793721] [2024-11-20 17:49:05,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:49:05,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:49:05,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:49:05,687 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:49:05,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 17:49:05,732 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:49:05,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:49:05,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 17:49:05,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:49:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:05,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:49:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:06,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194793721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:49:06,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:49:06,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-20 17:49:06,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246057042] [2024-11-20 17:49:06,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:49:06,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-20 17:49:06,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:49:06,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-20 17:49:06,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 17:49:06,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:49:06,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 1068 transitions, 30995 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:49:06,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:49:06,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:49:06,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:49:10,947 INFO L124 PetriNetUnfolderBase]: 2768/4932 cut-off events. [2024-11-20 17:49:10,947 INFO L125 PetriNetUnfolderBase]: For 178609/178609 co-relation queries the response was YES. [2024-11-20 17:49:10,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62026 conditions, 4932 events. 2768/4932 cut-off events. For 178609/178609 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 31549 event pairs, 50 based on Foata normal form. 4/4936 useless extension candidates. Maximal degree in co-relation 61629. Up to 1455 conditions per place. [2024-11-20 17:49:11,007 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 479 selfloop transitions, 1020 changer transitions 27/1527 dead transitions. [2024-11-20 17:49:11,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1527 transitions, 44881 flow [2024-11-20 17:49:11,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-20 17:49:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-11-20 17:49:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 806 transitions. [2024-11-20 17:49:11,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4027986006996502 [2024-11-20 17:49:11,009 INFO L175 Difference]: Start difference. First operand has 498 places, 1068 transitions, 30995 flow. Second operand 87 states and 806 transitions. [2024-11-20 17:49:11,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1527 transitions, 44881 flow [2024-11-20 17:49:13,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 1527 transitions, 43142 flow, removed 486 selfloop flow, removed 55 redundant places. [2024-11-20 17:49:13,469 INFO L231 Difference]: Finished difference. Result has 555 places, 1332 transitions, 41501 flow [2024-11-20 17:49:13,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=29814, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=764, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=41501, PETRI_PLACES=555, PETRI_TRANSITIONS=1332} [2024-11-20 17:49:13,470 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 530 predicate places. [2024-11-20 17:49:13,471 INFO L471 AbstractCegarLoop]: Abstraction has has 555 places, 1332 transitions, 41501 flow [2024-11-20 17:49:13,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:49:13,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:49:13,472 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:49:13,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 17:49:13,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:49:13,672 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:49:13,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:49:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash 564803600, now seen corresponding path program 15 times [2024-11-20 17:49:13,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:49:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995984824] [2024-11-20 17:49:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:49:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:49:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:49:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:13,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:49:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995984824] [2024-11-20 17:49:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995984824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:49:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935125273] [2024-11-20 17:49:13,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:49:13,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:49:13,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:49:13,924 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:49:13,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 17:49:14,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:49:14,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:49:14,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 17:49:14,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:49:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:14,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:49:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:14,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935125273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:49:14,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:49:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-20 17:49:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503131764] [2024-11-20 17:49:14,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:49:14,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-20 17:49:14,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:49:14,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-20 17:49:14,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 17:49:14,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:49:14,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1332 transitions, 41501 flow. Second operand has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:49:14,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:49:14,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:49:14,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:49:19,598 INFO L124 PetriNetUnfolderBase]: 3152/5610 cut-off events. [2024-11-20 17:49:19,598 INFO L125 PetriNetUnfolderBase]: For 240831/240831 co-relation queries the response was YES. [2024-11-20 17:49:19,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74924 conditions, 5610 events. 3152/5610 cut-off events. For 240831/240831 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36999 event pairs, 69 based on Foata normal form. 4/5614 useless extension candidates. Maximal degree in co-relation 74533. Up to 2469 conditions per place. [2024-11-20 17:49:19,687 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 619 selfloop transitions, 1018 changer transitions 25/1663 dead transitions. [2024-11-20 17:49:19,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 1663 transitions, 52653 flow [2024-11-20 17:49:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-20 17:49:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-20 17:49:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 633 transitions. [2024-11-20 17:49:19,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39316770186335404 [2024-11-20 17:49:19,689 INFO L175 Difference]: Start difference. First operand has 555 places, 1332 transitions, 41501 flow. Second operand 70 states and 633 transitions. [2024-11-20 17:49:19,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 1663 transitions, 52653 flow [2024-11-20 17:49:23,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 1663 transitions, 51832 flow, removed 261 selfloop flow, removed 21 redundant places. [2024-11-20 17:49:23,641 INFO L231 Difference]: Finished difference. Result has 633 places, 1516 transitions, 50831 flow [2024-11-20 17:49:23,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40754, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=835, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=50831, PETRI_PLACES=633, PETRI_TRANSITIONS=1516} [2024-11-20 17:49:23,643 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 608 predicate places. [2024-11-20 17:49:23,643 INFO L471 AbstractCegarLoop]: Abstraction has has 633 places, 1516 transitions, 50831 flow [2024-11-20 17:49:23,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.705882352941177) internal successors, (194), 34 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:49:23,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:49:23,643 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:49:23,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 17:49:23,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 17:49:23,844 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:49:23,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:49:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash -27474382, now seen corresponding path program 16 times [2024-11-20 17:49:23,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:49:23,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173752421] [2024-11-20 17:49:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:49:23,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:49:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:49:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:49:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173752421] [2024-11-20 17:49:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173752421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:49:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252813607] [2024-11-20 17:49:24,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:49:24,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:49:24,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:49:24,063 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:49:24,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 17:49:24,102 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:49:24,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:49:24,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 17:49:24,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:49:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:24,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:49:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:24,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252813607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:49:24,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:49:24,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-20 17:49:24,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908751898] [2024-11-20 17:49:24,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:49:24,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-20 17:49:24,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:49:24,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-20 17:49:24,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 17:49:24,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:49:24,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 1516 transitions, 50831 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:49:24,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:49:24,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:49:24,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:49:31,164 INFO L124 PetriNetUnfolderBase]: 3743/6715 cut-off events. [2024-11-20 17:49:31,164 INFO L125 PetriNetUnfolderBase]: For 355412/355412 co-relation queries the response was YES. [2024-11-20 17:49:31,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94514 conditions, 6715 events. 3743/6715 cut-off events. For 355412/355412 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 46552 event pairs, 86 based on Foata normal form. 8/6723 useless extension candidates. Maximal degree in co-relation 94022. Up to 2797 conditions per place. [2024-11-20 17:49:31,281 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 617 selfloop transitions, 1353 changer transitions 20/1991 dead transitions. [2024-11-20 17:49:31,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 1991 transitions, 66385 flow [2024-11-20 17:49:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-20 17:49:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-20 17:49:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 748 transitions. [2024-11-20 17:49:31,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38716356107660455 [2024-11-20 17:49:31,284 INFO L175 Difference]: Start difference. First operand has 633 places, 1516 transitions, 50831 flow. Second operand 84 states and 748 transitions. [2024-11-20 17:49:31,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 1991 transitions, 66385 flow [2024-11-20 17:49:36,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 1991 transitions, 66058 flow, removed 84 selfloop flow, removed 18 redundant places. [2024-11-20 17:49:37,046 INFO L231 Difference]: Finished difference. Result has 729 places, 1819 transitions, 65635 flow [2024-11-20 17:49:37,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50615, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=65635, PETRI_PLACES=729, PETRI_TRANSITIONS=1819} [2024-11-20 17:49:37,049 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 704 predicate places. [2024-11-20 17:49:37,049 INFO L471 AbstractCegarLoop]: Abstraction has has 729 places, 1819 transitions, 65635 flow [2024-11-20 17:49:37,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:49:37,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:49:37,049 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:49:37,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-20 17:49:37,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 17:49:37,250 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:49:37,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:49:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1675408528, now seen corresponding path program 17 times [2024-11-20 17:49:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:49:37,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521301775] [2024-11-20 17:49:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:49:37,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:49:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:49:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:37,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:49:37,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521301775] [2024-11-20 17:49:37,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521301775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:49:37,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616659374] [2024-11-20 17:49:37,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:49:37,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:49:37,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:49:37,457 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:49:37,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 17:49:37,501 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-20 17:49:37,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:49:37,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 17:49:37,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:49:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:37,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:49:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:49:38,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616659374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:49:38,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:49:38,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-11-20 17:49:38,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50405743] [2024-11-20 17:49:38,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:49:38,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-20 17:49:38,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:49:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-20 17:49:38,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2024-11-20 17:49:38,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:49:38,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 1819 transitions, 65635 flow. Second operand has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:49:38,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:49:38,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:49:38,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:49:43,437 INFO L124 PetriNetUnfolderBase]: 3770/6738 cut-off events. [2024-11-20 17:49:43,437 INFO L125 PetriNetUnfolderBase]: For 400632/400632 co-relation queries the response was YES. [2024-11-20 17:49:43,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101931 conditions, 6738 events. 3770/6738 cut-off events. For 400632/400632 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 46518 event pairs, 110 based on Foata normal form. 9/6747 useless extension candidates. Maximal degree in co-relation 101438. Up to 3538 conditions per place. [2024-11-20 17:49:43,571 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 704 selfloop transitions, 1227 changer transitions 19/1951 dead transitions. [2024-11-20 17:49:43,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 1951 transitions, 71390 flow [2024-11-20 17:49:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-20 17:49:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-20 17:49:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 417 transitions. [2024-11-20 17:49:43,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3941398865784499 [2024-11-20 17:49:43,573 INFO L175 Difference]: Start difference. First operand has 729 places, 1819 transitions, 65635 flow. Second operand 46 states and 417 transitions. [2024-11-20 17:49:43,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 1951 transitions, 71390 flow