./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-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 3c66e95d4d33d89eed9ab2f285249dafeef639a3ca9f6d879b87b944d1b8c0ce --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:54:20,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:54:20,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:54:20,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:54:20,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:54:20,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:54:20,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:54:20,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:54:20,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:54:20,850 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:54:20,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:54:20,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:54:20,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:54:20,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:54:20,852 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:54:20,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:54:20,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:54:20,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:54:20,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:54:20,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:54:20,854 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:54:20,854 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:54:20,855 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:54:20,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:54:20,855 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:54:20,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:54:20,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:54:20,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:54:20,856 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:54:20,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:54:20,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:54:20,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:54:20,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:54:20,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:20,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:54:20,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:54:20,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:54:20,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:54:20,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:54:20,860 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:54:20,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:54:20,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:54:20,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c66e95d4d33d89eed9ab2f285249dafeef639a3ca9f6d879b87b944d1b8c0ce [2024-10-14 19:54:21,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:54:21,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:54:21,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:54:21,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:54:21,129 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:54:21,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-10-14 19:54:22,598 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:54:22,773 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:54:22,774 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-10-14 19:54:22,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d25173181/65bd8de04fd549ce87b37f2a17faebbc/FLAGc3130e8a1 [2024-10-14 19:54:23,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d25173181/65bd8de04fd549ce87b37f2a17faebbc [2024-10-14 19:54:23,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:54:23,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:54:23,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:23,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:54:23,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:54:23,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e66735e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23, skipping insertion in model container [2024-10-14 19:54:23,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:54:23,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:23,413 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:54:23,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:23,484 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:54:23,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23 WrapperNode [2024-10-14 19:54:23,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:23,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:54:23,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:54:23,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:54:23,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,539 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 69 [2024-10-14 19:54:23,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:54:23,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:54:23,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:54:23,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:54:23,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,567 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,580 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 19:54:23,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:54:23,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:54:23,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:54:23,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:54:23,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (1/1) ... [2024-10-14 19:54:23,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:23,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:23,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:54:23,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:54:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:54:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:54:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:54:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:54:23,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:54:23,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:54:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:54:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:54:23,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:54:23,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:54:23,683 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:54:23,763 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:54:23,764 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:54:23,952 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:54:23,952 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:54:24,092 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:54:24,092 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 19:54:24,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:54:24 BoogieIcfgContainer [2024-10-14 19:54:24,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:54:24,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:54:24,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:54:24,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:54:24,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:54:23" (1/3) ... [2024-10-14 19:54:24,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc6cc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:54:24, skipping insertion in model container [2024-10-14 19:54:24,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:23" (2/3) ... [2024-10-14 19:54:24,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc6cc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:54:24, skipping insertion in model container [2024-10-14 19:54:24,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:54:24" (3/3) ... [2024-10-14 19:54:24,106 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-10-14 19:54:24,125 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:54:24,125 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:54:24,125 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:54:24,182 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:54:24,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-10-14 19:54:24,245 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-10-14 19:54:24,245 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:54:24,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-14 19:54:24,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-10-14 19:54:24,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-10-14 19:54:24,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:54:24,281 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;@3269e8d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:54:24,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:54:24,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:54:24,295 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-14 19:54:24,295 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:54:24,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:24,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:24,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:24,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:24,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1077077098, now seen corresponding path program 1 times [2024-10-14 19:54:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:24,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595707015] [2024-10-14 19:54:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:25,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595707015] [2024-10-14 19:54:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595707015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:25,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:54:25,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892182873] [2024-10-14 19:54:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:25,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:54:25,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:54:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:54:25,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-14 19:54:25,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:25,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:25,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-14 19:54:25,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:25,415 INFO L124 PetriNetUnfolderBase]: 77/173 cut-off events. [2024-10-14 19:54:25,415 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-14 19:54:25,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 173 events. 77/173 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 655 event pairs, 7 based on Foata normal form. 13/186 useless extension candidates. Maximal degree in co-relation 286. Up to 91 conditions per place. [2024-10-14 19:54:25,421 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 29 selfloop transitions, 4 changer transitions 9/45 dead transitions. [2024-10-14 19:54:25,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 45 transitions, 210 flow [2024-10-14 19:54:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:54:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:54:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-10-14 19:54:25,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-14 19:54:25,439 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 7 states and 91 transitions. [2024-10-14 19:54:25,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 45 transitions, 210 flow [2024-10-14 19:54:25,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:54:25,447 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 78 flow [2024-10-14 19:54:25,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2024-10-14 19:54:25,454 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-10-14 19:54:25,454 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 78 flow [2024-10-14 19:54:25,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:25,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:25,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:25,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:54:25,458 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:25,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash -602723234, now seen corresponding path program 2 times [2024-10-14 19:54:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:25,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633476062] [2024-10-14 19:54:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:25,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:25,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633476062] [2024-10-14 19:54:25,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633476062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:25,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:54:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277169303] [2024-10-14 19:54:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:25,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:54:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:54:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:54:25,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-14 19:54:25,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:25,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:25,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-14 19:54:25,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:25,994 INFO L124 PetriNetUnfolderBase]: 75/166 cut-off events. [2024-10-14 19:54:25,995 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-14 19:54:25,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 166 events. 75/166 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 573 event pairs, 21 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 444. Up to 93 conditions per place. [2024-10-14 19:54:26,000 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 28 selfloop transitions, 8 changer transitions 6/45 dead transitions. [2024-10-14 19:54:26,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 252 flow [2024-10-14 19:54:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:54:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:54:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-10-14 19:54:26,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-10-14 19:54:26,004 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 78 flow. Second operand 7 states and 85 transitions. [2024-10-14 19:54:26,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 252 flow [2024-10-14 19:54:26,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 233 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-14 19:54:26,010 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 128 flow [2024-10-14 19:54:26,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-10-14 19:54:26,011 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-10-14 19:54:26,011 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 128 flow [2024-10-14 19:54:26,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:26,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:26,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:26,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:54:26,012 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:26,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash -522739498, now seen corresponding path program 3 times [2024-10-14 19:54:26,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:26,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277626398] [2024-10-14 19:54:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:26,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:26,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:26,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277626398] [2024-10-14 19:54:26,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277626398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:26,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:26,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:54:26,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382249033] [2024-10-14 19:54:26,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:26,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:54:26,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:26,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:54:26,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:54:26,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-14 19:54:26,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 128 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:26,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:26,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-14 19:54:26,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:26,534 INFO L124 PetriNetUnfolderBase]: 80/181 cut-off events. [2024-10-14 19:54:26,534 INFO L125 PetriNetUnfolderBase]: For 200/204 co-relation queries the response was YES. [2024-10-14 19:54:26,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 181 events. 80/181 cut-off events. For 200/204 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 679 event pairs, 23 based on Foata normal form. 5/186 useless extension candidates. Maximal degree in co-relation 530. Up to 95 conditions per place. [2024-10-14 19:54:26,538 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 27 selfloop transitions, 11 changer transitions 7/48 dead transitions. [2024-10-14 19:54:26,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 298 flow [2024-10-14 19:54:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:54:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:54:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-10-14 19:54:26,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:54:26,542 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 128 flow. Second operand 7 states and 84 transitions. [2024-10-14 19:54:26,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 298 flow [2024-10-14 19:54:26,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 288 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 19:54:26,548 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 183 flow [2024-10-14 19:54:26,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-10-14 19:54:26,550 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2024-10-14 19:54:26,551 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 183 flow [2024-10-14 19:54:26,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:26,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:26,551 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:26,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:54:26,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:26,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1836561498, now seen corresponding path program 4 times [2024-10-14 19:54:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:26,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480169517] [2024-10-14 19:54:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:26,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:26,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480169517] [2024-10-14 19:54:26,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480169517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:26,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:26,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:54:26,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112742053] [2024-10-14 19:54:26,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:26,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:54:26,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:26,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:54:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:54:26,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-14 19:54:26,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:26,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:26,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-14 19:54:26,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:26,941 INFO L124 PetriNetUnfolderBase]: 76/171 cut-off events. [2024-10-14 19:54:26,941 INFO L125 PetriNetUnfolderBase]: For 338/342 co-relation queries the response was YES. [2024-10-14 19:54:26,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 171 events. 76/171 cut-off events. For 338/342 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 615 event pairs, 25 based on Foata normal form. 5/175 useless extension candidates. Maximal degree in co-relation 562. Up to 95 conditions per place. [2024-10-14 19:54:26,943 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 25 selfloop transitions, 12 changer transitions 7/47 dead transitions. [2024-10-14 19:54:26,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 346 flow [2024-10-14 19:54:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:54:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:54:26,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-10-14 19:54:26,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-10-14 19:54:26,971 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 183 flow. Second operand 7 states and 82 transitions. [2024-10-14 19:54:26,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 346 flow [2024-10-14 19:54:26,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 312 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-14 19:54:26,978 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 214 flow [2024-10-14 19:54:26,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-10-14 19:54:26,982 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-10-14 19:54:26,982 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 214 flow [2024-10-14 19:54:26,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:26,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:26,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:26,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:54:26,983 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:26,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:26,984 INFO L85 PathProgramCache]: Analyzing trace with hash -390467458, now seen corresponding path program 5 times [2024-10-14 19:54:26,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:26,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723224585] [2024-10-14 19:54:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:27,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:27,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723224585] [2024-10-14 19:54:27,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723224585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:27,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:27,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:54:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481918098] [2024-10-14 19:54:27,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:27,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:54:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:54:27,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:54:27,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-14 19:54:27,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:27,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:27,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-14 19:54:27,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:27,372 INFO L124 PetriNetUnfolderBase]: 75/172 cut-off events. [2024-10-14 19:54:27,372 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-10-14 19:54:27,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 172 events. 75/172 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 21 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 571. Up to 97 conditions per place. [2024-10-14 19:54:27,375 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 28 selfloop transitions, 13 changer transitions 4/48 dead transitions. [2024-10-14 19:54:27,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 360 flow [2024-10-14 19:54:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:54:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:54:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-10-14 19:54:27,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-10-14 19:54:27,376 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 214 flow. Second operand 7 states and 83 transitions. [2024-10-14 19:54:27,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 360 flow [2024-10-14 19:54:27,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 326 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-14 19:54:27,381 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 219 flow [2024-10-14 19:54:27,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-10-14 19:54:27,382 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-10-14 19:54:27,382 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 219 flow [2024-10-14 19:54:27,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:27,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:27,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:27,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:54:27,383 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:27,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1975089648, now seen corresponding path program 6 times [2024-10-14 19:54:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:27,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767485727] [2024-10-14 19:54:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:27,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:27,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767485727] [2024-10-14 19:54:27,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767485727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:27,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:27,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:54:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661968273] [2024-10-14 19:54:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:27,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:54:27,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:54:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:54:27,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-14 19:54:27,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:27,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:27,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-14 19:54:27,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:27,735 INFO L124 PetriNetUnfolderBase]: 74/162 cut-off events. [2024-10-14 19:54:27,735 INFO L125 PetriNetUnfolderBase]: For 330/334 co-relation queries the response was YES. [2024-10-14 19:54:27,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 162 events. 74/162 cut-off events. For 330/334 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 550 event pairs, 24 based on Foata normal form. 5/166 useless extension candidates. Maximal degree in co-relation 545. Up to 97 conditions per place. [2024-10-14 19:54:27,737 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 22 selfloop transitions, 13 changer transitions 6/44 dead transitions. [2024-10-14 19:54:27,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 338 flow [2024-10-14 19:54:27,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:54:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:54:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-10-14 19:54:27,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-10-14 19:54:27,739 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 219 flow. Second operand 7 states and 79 transitions. [2024-10-14 19:54:27,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 338 flow [2024-10-14 19:54:27,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 308 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-14 19:54:27,742 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 208 flow [2024-10-14 19:54:27,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2024-10-14 19:54:27,743 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2024-10-14 19:54:27,743 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 208 flow [2024-10-14 19:54:27,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:27,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:27,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:27,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:54:27,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:27,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1069131815, now seen corresponding path program 1 times [2024-10-14 19:54:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:27,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058699761] [2024-10-14 19:54:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:27,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:27,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058699761] [2024-10-14 19:54:27,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058699761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419805138] [2024-10-14 19:54:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:27,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:27,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:27,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:27,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:54:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:28,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:28,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:28,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:28,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419805138] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:28,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:28,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-14 19:54:28,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993912519] [2024-10-14 19:54:28,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:28,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 19:54:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:28,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 19:54:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-10-14 19:54:28,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:28,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 208 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:28,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:28,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:28,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:29,735 INFO L124 PetriNetUnfolderBase]: 363/692 cut-off events. [2024-10-14 19:54:29,736 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2024-10-14 19:54:29,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 692 events. 363/692 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3112 event pairs, 14 based on Foata normal form. 17/709 useless extension candidates. Maximal degree in co-relation 1888. Up to 167 conditions per place. [2024-10-14 19:54:29,741 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 129 selfloop transitions, 78 changer transitions 16/224 dead transitions. [2024-10-14 19:54:29,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 224 transitions, 1301 flow [2024-10-14 19:54:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-14 19:54:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-10-14 19:54:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 378 transitions. [2024-10-14 19:54:29,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-10-14 19:54:29,743 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 208 flow. Second operand 40 states and 378 transitions. [2024-10-14 19:54:29,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 224 transitions, 1301 flow [2024-10-14 19:54:29,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 224 transitions, 1226 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-10-14 19:54:29,749 INFO L231 Difference]: Finished difference. Result has 83 places, 104 transitions, 649 flow [2024-10-14 19:54:29,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=649, PETRI_PLACES=83, PETRI_TRANSITIONS=104} [2024-10-14 19:54:29,750 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 57 predicate places. [2024-10-14 19:54:29,750 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 104 transitions, 649 flow [2024-10-14 19:54:29,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:29,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:29,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:29,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:54:29,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:29,955 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:29,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash 683589629, now seen corresponding path program 2 times [2024-10-14 19:54:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:29,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057489354] [2024-10-14 19:54:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:29,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:30,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057489354] [2024-10-14 19:54:30,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057489354] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862317645] [2024-10-14 19:54:30,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:54:30,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:30,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:30,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:54:30,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:54:30,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:30,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:30,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:30,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862317645] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:30,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:30,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-14 19:54:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96662262] [2024-10-14 19:54:30,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:30,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 19:54:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 19:54:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-10-14 19:54:30,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:30,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 649 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:30,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:30,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:30,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:31,691 INFO L124 PetriNetUnfolderBase]: 465/885 cut-off events. [2024-10-14 19:54:31,694 INFO L125 PetriNetUnfolderBase]: For 1015/1015 co-relation queries the response was YES. [2024-10-14 19:54:31,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 885 events. 465/885 cut-off events. For 1015/1015 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4327 event pairs, 32 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 3042. Up to 393 conditions per place. [2024-10-14 19:54:31,703 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 115 selfloop transitions, 119 changer transitions 9/244 dead transitions. [2024-10-14 19:54:31,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 244 transitions, 1780 flow [2024-10-14 19:54:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-14 19:54:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-10-14 19:54:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 318 transitions. [2024-10-14 19:54:31,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-10-14 19:54:31,706 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 649 flow. Second operand 35 states and 318 transitions. [2024-10-14 19:54:31,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 244 transitions, 1780 flow [2024-10-14 19:54:31,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 244 transitions, 1560 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-10-14 19:54:31,719 INFO L231 Difference]: Finished difference. Result has 119 places, 159 transitions, 1154 flow [2024-10-14 19:54:31,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1154, PETRI_PLACES=119, PETRI_TRANSITIONS=159} [2024-10-14 19:54:31,723 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2024-10-14 19:54:31,723 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 159 transitions, 1154 flow [2024-10-14 19:54:31,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:31,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:31,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:31,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 19:54:31,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-14 19:54:31,925 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:31,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1546626681, now seen corresponding path program 3 times [2024-10-14 19:54:31,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:31,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642582162] [2024-10-14 19:54:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:31,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:32,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:32,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642582162] [2024-10-14 19:54:32,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642582162] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:32,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436283771] [2024-10-14 19:54:32,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:54:32,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:32,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:32,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:32,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:54:32,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:54:32,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:32,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:32,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:32,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:32,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436283771] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:32,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:32,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-14 19:54:32,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243539649] [2024-10-14 19:54:32,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:32,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 19:54:32,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:32,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 19:54:32,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-10-14 19:54:32,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:32,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 159 transitions, 1154 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:32,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:32,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:32,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:34,337 INFO L124 PetriNetUnfolderBase]: 728/1389 cut-off events. [2024-10-14 19:54:34,337 INFO L125 PetriNetUnfolderBase]: For 2818/2818 co-relation queries the response was YES. [2024-10-14 19:54:34,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 1389 events. 728/1389 cut-off events. For 2818/2818 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7656 event pairs, 23 based on Foata normal form. 2/1389 useless extension candidates. Maximal degree in co-relation 5463. Up to 254 conditions per place. [2024-10-14 19:54:34,349 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 183 selfloop transitions, 242 changer transitions 11/437 dead transitions. [2024-10-14 19:54:34,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 437 transitions, 3540 flow [2024-10-14 19:54:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-14 19:54:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-10-14 19:54:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 573 transitions. [2024-10-14 19:54:34,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373046875 [2024-10-14 19:54:34,352 INFO L175 Difference]: Start difference. First operand has 119 places, 159 transitions, 1154 flow. Second operand 64 states and 573 transitions. [2024-10-14 19:54:34,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 437 transitions, 3540 flow [2024-10-14 19:54:34,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 437 transitions, 3463 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-14 19:54:34,382 INFO L231 Difference]: Finished difference. Result has 191 places, 280 transitions, 2653 flow [2024-10-14 19:54:34,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=2653, PETRI_PLACES=191, PETRI_TRANSITIONS=280} [2024-10-14 19:54:34,386 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 165 predicate places. [2024-10-14 19:54:34,386 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 280 transitions, 2653 flow [2024-10-14 19:54:34,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:34,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:34,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:34,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 19:54:34,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:34,592 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:34,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1414354641, now seen corresponding path program 4 times [2024-10-14 19:54:34,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:34,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050121734] [2024-10-14 19:54:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:34,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:34,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:34,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050121734] [2024-10-14 19:54:34,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050121734] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:34,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31799929] [2024-10-14 19:54:34,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:54:34,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:34,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:34,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:54:34,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:54:34,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:34,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:34,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:35,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:35,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31799929] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:35,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:35,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-14 19:54:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598733222] [2024-10-14 19:54:35,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:35,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 19:54:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 19:54:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-10-14 19:54:35,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:35,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 280 transitions, 2653 flow. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:35,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:35,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:35,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:37,272 INFO L124 PetriNetUnfolderBase]: 991/1844 cut-off events. [2024-10-14 19:54:37,272 INFO L125 PetriNetUnfolderBase]: For 14014/14014 co-relation queries the response was YES. [2024-10-14 19:54:37,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 1844 events. 991/1844 cut-off events. For 14014/14014 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10422 event pairs, 23 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 9674. Up to 351 conditions per place. [2024-10-14 19:54:37,297 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 191 selfloop transitions, 335 changer transitions 10/537 dead transitions. [2024-10-14 19:54:37,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 537 transitions, 5695 flow [2024-10-14 19:54:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-14 19:54:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-10-14 19:54:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 587 transitions. [2024-10-14 19:54:37,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3821614583333333 [2024-10-14 19:54:37,301 INFO L175 Difference]: Start difference. First operand has 191 places, 280 transitions, 2653 flow. Second operand 64 states and 587 transitions. [2024-10-14 19:54:37,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 537 transitions, 5695 flow [2024-10-14 19:54:37,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 537 transitions, 5393 flow, removed 89 selfloop flow, removed 8 redundant places. [2024-10-14 19:54:37,385 INFO L231 Difference]: Finished difference. Result has 253 places, 383 transitions, 4167 flow [2024-10-14 19:54:37,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=4167, PETRI_PLACES=253, PETRI_TRANSITIONS=383} [2024-10-14 19:54:37,386 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-10-14 19:54:37,386 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 383 transitions, 4167 flow [2024-10-14 19:54:37,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:37,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:37,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:37,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 19:54:37,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:37,590 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:37,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:37,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1299253945, now seen corresponding path program 5 times [2024-10-14 19:54:37,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:37,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826757195] [2024-10-14 19:54:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:37,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:37,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:37,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826757195] [2024-10-14 19:54:37,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826757195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:37,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353340073] [2024-10-14 19:54:37,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:54:37,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:37,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:37,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:54:37,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:54:37,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:37,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:37,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:37,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:38,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353340073] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:38,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:38,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-10-14 19:54:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403494603] [2024-10-14 19:54:38,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:38,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 19:54:38,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:38,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 19:54:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-10-14 19:54:38,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:38,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 383 transitions, 4167 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:38,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:38,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:38,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:38,778 INFO L124 PetriNetUnfolderBase]: 1001/1870 cut-off events. [2024-10-14 19:54:38,779 INFO L125 PetriNetUnfolderBase]: For 17948/17948 co-relation queries the response was YES. [2024-10-14 19:54:38,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 1870 events. 1001/1870 cut-off events. For 17948/17948 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10660 event pairs, 74 based on Foata normal form. 2/1868 useless extension candidates. Maximal degree in co-relation 11154. Up to 1184 conditions per place. [2024-10-14 19:54:38,801 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 179 selfloop transitions, 246 changer transitions 8/434 dead transitions. [2024-10-14 19:54:38,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 434 transitions, 5400 flow [2024-10-14 19:54:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 19:54:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 19:54:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 166 transitions. [2024-10-14 19:54:38,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36403508771929827 [2024-10-14 19:54:38,806 INFO L175 Difference]: Start difference. First operand has 253 places, 383 transitions, 4167 flow. Second operand 19 states and 166 transitions. [2024-10-14 19:54:38,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 434 transitions, 5400 flow [2024-10-14 19:54:38,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 434 transitions, 5083 flow, removed 71 selfloop flow, removed 22 redundant places. [2024-10-14 19:54:38,901 INFO L231 Difference]: Finished difference. Result has 254 places, 395 transitions, 4857 flow [2024-10-14 19:54:38,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3903, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4857, PETRI_PLACES=254, PETRI_TRANSITIONS=395} [2024-10-14 19:54:38,902 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 228 predicate places. [2024-10-14 19:54:38,903 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 395 transitions, 4857 flow [2024-10-14 19:54:38,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:38,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:38,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:38,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 19:54:39,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 19:54:39,104 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:39,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash -846916815, now seen corresponding path program 6 times [2024-10-14 19:54:39,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:39,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937154625] [2024-10-14 19:54:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:39,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:39,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:39,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937154625] [2024-10-14 19:54:39,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937154625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:39,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051991327] [2024-10-14 19:54:39,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:54:39,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:39,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:39,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:39,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:54:39,349 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 19:54:39,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:39,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:39,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:39,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:39,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051991327] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:39,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:39,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-14 19:54:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014575658] [2024-10-14 19:54:39,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:39,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:54:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:39,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:54:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:54:39,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:39,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 395 transitions, 4857 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:39,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:39,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:39,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:40,371 INFO L124 PetriNetUnfolderBase]: 1016/1903 cut-off events. [2024-10-14 19:54:40,372 INFO L125 PetriNetUnfolderBase]: For 15500/15500 co-relation queries the response was YES. [2024-10-14 19:54:40,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12193 conditions, 1903 events. 1016/1903 cut-off events. For 15500/15500 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10854 event pairs, 86 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 12131. Up to 1240 conditions per place. [2024-10-14 19:54:40,401 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 189 selfloop transitions, 252 changer transitions 8/450 dead transitions. [2024-10-14 19:54:40,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 450 transitions, 6105 flow [2024-10-14 19:54:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 19:54:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 19:54:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 201 transitions. [2024-10-14 19:54:40,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-10-14 19:54:40,403 INFO L175 Difference]: Start difference. First operand has 254 places, 395 transitions, 4857 flow. Second operand 24 states and 201 transitions. [2024-10-14 19:54:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 450 transitions, 6105 flow [2024-10-14 19:54:40,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 450 transitions, 6037 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-14 19:54:40,532 INFO L231 Difference]: Finished difference. Result has 277 places, 406 transitions, 5766 flow [2024-10-14 19:54:40,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4792, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5766, PETRI_PLACES=277, PETRI_TRANSITIONS=406} [2024-10-14 19:54:40,534 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 251 predicate places. [2024-10-14 19:54:40,534 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 406 transitions, 5766 flow [2024-10-14 19:54:40,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:40,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:40,535 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:40,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 19:54:40,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:40,736 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:40,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:40,736 INFO L85 PathProgramCache]: Analyzing trace with hash -673669123, now seen corresponding path program 7 times [2024-10-14 19:54:40,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:40,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088572378] [2024-10-14 19:54:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:40,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:40,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:40,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088572378] [2024-10-14 19:54:40,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088572378] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:40,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887133846] [2024-10-14 19:54:40,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:54:40,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:40,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:40,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:40,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 19:54:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:40,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:40,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:41,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887133846] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:41,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:41,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-14 19:54:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128355370] [2024-10-14 19:54:41,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:41,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:54:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:54:41,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:54:41,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:41,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 406 transitions, 5766 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:41,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:41,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:41,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:41,758 INFO L124 PetriNetUnfolderBase]: 1037/1958 cut-off events. [2024-10-14 19:54:41,758 INFO L125 PetriNetUnfolderBase]: For 19115/19115 co-relation queries the response was YES. [2024-10-14 19:54:41,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13647 conditions, 1958 events. 1037/1958 cut-off events. For 19115/19115 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11421 event pairs, 88 based on Foata normal form. 2/1960 useless extension candidates. Maximal degree in co-relation 13580. Up to 1317 conditions per place. [2024-10-14 19:54:41,782 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 193 selfloop transitions, 257 changer transitions 8/459 dead transitions. [2024-10-14 19:54:41,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 459 transitions, 7108 flow [2024-10-14 19:54:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 19:54:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 19:54:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 179 transitions. [2024-10-14 19:54:41,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3551587301587302 [2024-10-14 19:54:41,784 INFO L175 Difference]: Start difference. First operand has 277 places, 406 transitions, 5766 flow. Second operand 21 states and 179 transitions. [2024-10-14 19:54:41,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 459 transitions, 7108 flow [2024-10-14 19:54:41,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 459 transitions, 7040 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-14 19:54:41,903 INFO L231 Difference]: Finished difference. Result has 291 places, 422 transitions, 6934 flow [2024-10-14 19:54:41,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6934, PETRI_PLACES=291, PETRI_TRANSITIONS=422} [2024-10-14 19:54:41,904 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 265 predicate places. [2024-10-14 19:54:41,904 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 422 transitions, 6934 flow [2024-10-14 19:54:41,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:41,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:41,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:41,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 19:54:42,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:42,106 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:42,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash -85923801, now seen corresponding path program 8 times [2024-10-14 19:54:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:42,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410438321] [2024-10-14 19:54:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:42,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:42,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:42,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410438321] [2024-10-14 19:54:42,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410438321] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:42,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106958220] [2024-10-14 19:54:42,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:54:42,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:42,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:42,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:42,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 19:54:42,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:54:42,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:42,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:42,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:42,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:42,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106958220] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:42,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:42,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-14 19:54:42,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149338417] [2024-10-14 19:54:42,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:42,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:54:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:54:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:54:42,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:42,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 422 transitions, 6934 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:42,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:42,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:42,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:43,445 INFO L124 PetriNetUnfolderBase]: 1043/1976 cut-off events. [2024-10-14 19:54:43,445 INFO L125 PetriNetUnfolderBase]: For 23640/23640 co-relation queries the response was YES. [2024-10-14 19:54:43,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15109 conditions, 1976 events. 1043/1976 cut-off events. For 23640/23640 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11559 event pairs, 89 based on Foata normal form. 2/1978 useless extension candidates. Maximal degree in co-relation 15037. Up to 1218 conditions per place. [2024-10-14 19:54:43,468 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 171 selfloop transitions, 293 changer transitions 8/473 dead transitions. [2024-10-14 19:54:43,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 473 transitions, 8217 flow [2024-10-14 19:54:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 19:54:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-14 19:54:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 218 transitions. [2024-10-14 19:54:43,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33641975308641975 [2024-10-14 19:54:43,470 INFO L175 Difference]: Start difference. First operand has 291 places, 422 transitions, 6934 flow. Second operand 27 states and 218 transitions. [2024-10-14 19:54:43,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 473 transitions, 8217 flow [2024-10-14 19:54:43,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 473 transitions, 8108 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-10-14 19:54:43,602 INFO L231 Difference]: Finished difference. Result has 309 places, 432 transitions, 7886 flow [2024-10-14 19:54:43,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6832, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7886, PETRI_PLACES=309, PETRI_TRANSITIONS=432} [2024-10-14 19:54:43,603 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 283 predicate places. [2024-10-14 19:54:43,603 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 432 transitions, 7886 flow [2024-10-14 19:54:43,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:43,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:43,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:43,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 19:54:43,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 19:54:43,804 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:43,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1694238983, now seen corresponding path program 9 times [2024-10-14 19:54:43,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:43,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724252408] [2024-10-14 19:54:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:43,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:43,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724252408] [2024-10-14 19:54:43,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724252408] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772601673] [2024-10-14 19:54:43,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:54:43,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:43,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:43,983 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:43,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 19:54:44,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:54:44,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:44,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:44,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:44,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772601673] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:44,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-14 19:54:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819142025] [2024-10-14 19:54:44,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:44,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:54:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:54:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:54:44,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:44,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 432 transitions, 7886 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:44,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:44,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:44,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:44,915 INFO L124 PetriNetUnfolderBase]: 1048/1991 cut-off events. [2024-10-14 19:54:44,916 INFO L125 PetriNetUnfolderBase]: For 28746/28746 co-relation queries the response was YES. [2024-10-14 19:54:44,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16368 conditions, 1991 events. 1048/1991 cut-off events. For 28746/28746 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11723 event pairs, 89 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 16291. Up to 1228 conditions per place. [2024-10-14 19:54:44,939 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 194 selfloop transitions, 266 changer transitions 8/469 dead transitions. [2024-10-14 19:54:44,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 469 transitions, 9101 flow [2024-10-14 19:54:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 19:54:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 19:54:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 160 transitions. [2024-10-14 19:54:44,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3508771929824561 [2024-10-14 19:54:44,941 INFO L175 Difference]: Start difference. First operand has 309 places, 432 transitions, 7886 flow. Second operand 19 states and 160 transitions. [2024-10-14 19:54:44,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 469 transitions, 9101 flow [2024-10-14 19:54:45,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 469 transitions, 8868 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-10-14 19:54:45,108 INFO L231 Difference]: Finished difference. Result has 318 places, 437 transitions, 8621 flow [2024-10-14 19:54:45,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7653, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8621, PETRI_PLACES=318, PETRI_TRANSITIONS=437} [2024-10-14 19:54:45,111 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 292 predicate places. [2024-10-14 19:54:45,111 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 437 transitions, 8621 flow [2024-10-14 19:54:45,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:45,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:45,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:45,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 19:54:45,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 19:54:45,316 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:45,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:45,316 INFO L85 PathProgramCache]: Analyzing trace with hash -259171493, now seen corresponding path program 10 times [2024-10-14 19:54:45,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:45,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777442821] [2024-10-14 19:54:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:45,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:45,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777442821] [2024-10-14 19:54:45,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777442821] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047941376] [2024-10-14 19:54:45,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:54:45,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:45,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:45,504 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:45,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 19:54:45,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:54:45,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:45,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:45,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:45,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:45,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047941376] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:45,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:45,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-14 19:54:45,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993612854] [2024-10-14 19:54:45,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:45,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:54:45,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:45,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:54:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:54:45,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:45,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 437 transitions, 8621 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:45,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:45,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:45,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:46,679 INFO L124 PetriNetUnfolderBase]: 1050/1995 cut-off events. [2024-10-14 19:54:46,680 INFO L125 PetriNetUnfolderBase]: For 36851/36851 co-relation queries the response was YES. [2024-10-14 19:54:46,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17372 conditions, 1995 events. 1050/1995 cut-off events. For 36851/36851 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11759 event pairs, 84 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 17290. Up to 1229 conditions per place. [2024-10-14 19:54:46,700 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 181 selfloop transitions, 293 changer transitions 4/479 dead transitions. [2024-10-14 19:54:46,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 479 transitions, 9825 flow [2024-10-14 19:54:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 19:54:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-14 19:54:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 215 transitions. [2024-10-14 19:54:46,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3317901234567901 [2024-10-14 19:54:46,702 INFO L175 Difference]: Start difference. First operand has 318 places, 437 transitions, 8621 flow. Second operand 27 states and 215 transitions. [2024-10-14 19:54:46,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 479 transitions, 9825 flow [2024-10-14 19:54:46,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 479 transitions, 9586 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-10-14 19:54:46,891 INFO L231 Difference]: Finished difference. Result has 334 places, 441 transitions, 9082 flow [2024-10-14 19:54:46,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8382, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=9082, PETRI_PLACES=334, PETRI_TRANSITIONS=441} [2024-10-14 19:54:46,892 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 308 predicate places. [2024-10-14 19:54:46,892 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 441 transitions, 9082 flow [2024-10-14 19:54:46,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:46,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:46,893 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:46,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:54:47,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 19:54:47,094 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:47,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:47,094 INFO L85 PathProgramCache]: Analyzing trace with hash 614569187, now seen corresponding path program 11 times [2024-10-14 19:54:47,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:47,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988929551] [2024-10-14 19:54:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:47,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988929551] [2024-10-14 19:54:47,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988929551] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130727007] [2024-10-14 19:54:47,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:54:47,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:47,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:47,268 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:47,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 19:54:47,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:54:47,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:47,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:47,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:47,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:47,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130727007] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:47,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:47,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-14 19:54:47,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156455529] [2024-10-14 19:54:47,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:47,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:54:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:54:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:54:47,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:47,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 441 transitions, 9082 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:47,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:47,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:47,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:49,163 INFO L124 PetriNetUnfolderBase]: 1141/2171 cut-off events. [2024-10-14 19:54:49,163 INFO L125 PetriNetUnfolderBase]: For 42056/42056 co-relation queries the response was YES. [2024-10-14 19:54:49,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19433 conditions, 2171 events. 1141/2171 cut-off events. For 42056/42056 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13102 event pairs, 67 based on Foata normal form. 3/2174 useless extension candidates. Maximal degree in co-relation 19350. Up to 1054 conditions per place. [2024-10-14 19:54:49,186 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 199 selfloop transitions, 363 changer transitions 13/576 dead transitions. [2024-10-14 19:54:49,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 576 transitions, 11768 flow [2024-10-14 19:54:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-14 19:54:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-10-14 19:54:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 376 transitions. [2024-10-14 19:54:49,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-10-14 19:54:49,192 INFO L175 Difference]: Start difference. First operand has 334 places, 441 transitions, 9082 flow. Second operand 45 states and 376 transitions. [2024-10-14 19:54:49,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 576 transitions, 11768 flow [2024-10-14 19:54:49,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 576 transitions, 11578 flow, removed 17 selfloop flow, removed 21 redundant places. [2024-10-14 19:54:49,434 INFO L231 Difference]: Finished difference. Result has 370 places, 498 transitions, 11210 flow [2024-10-14 19:54:49,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8908, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11210, PETRI_PLACES=370, PETRI_TRANSITIONS=498} [2024-10-14 19:54:49,436 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 344 predicate places. [2024-10-14 19:54:49,436 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 498 transitions, 11210 flow [2024-10-14 19:54:49,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:49,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:49,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:49,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 19:54:49,638 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,SelfDestructingSolverStorable16 [2024-10-14 19:54:49,638 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:49,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1962054403, now seen corresponding path program 12 times [2024-10-14 19:54:49,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:49,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678680401] [2024-10-14 19:54:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:49,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:49,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:49,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678680401] [2024-10-14 19:54:49,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678680401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:49,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894378181] [2024-10-14 19:54:49,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:54:49,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:49,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:49,803 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:49,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 19:54:49,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 19:54:49,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:49,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:49,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:49,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894378181] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:50,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-14 19:54:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207950068] [2024-10-14 19:54:50,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:50,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:54:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:50,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:54:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:54:50,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:50,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 498 transitions, 11210 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:50,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:50,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:50,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:52,142 INFO L124 PetriNetUnfolderBase]: 1239/2363 cut-off events. [2024-10-14 19:54:52,143 INFO L125 PetriNetUnfolderBase]: For 61814/61814 co-relation queries the response was YES. [2024-10-14 19:54:52,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23333 conditions, 2363 events. 1239/2363 cut-off events. For 61814/61814 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14620 event pairs, 68 based on Foata normal form. 3/2366 useless extension candidates. Maximal degree in co-relation 23237. Up to 902 conditions per place. [2024-10-14 19:54:52,180 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 204 selfloop transitions, 455 changer transitions 14/674 dead transitions. [2024-10-14 19:54:52,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 674 transitions, 14794 flow [2024-10-14 19:54:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-14 19:54:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-10-14 19:54:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 526 transitions. [2024-10-14 19:54:52,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3478835978835979 [2024-10-14 19:54:52,184 INFO L175 Difference]: Start difference. First operand has 370 places, 498 transitions, 11210 flow. Second operand 63 states and 526 transitions. [2024-10-14 19:54:52,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 674 transitions, 14794 flow [2024-10-14 19:54:52,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 674 transitions, 14380 flow, removed 189 selfloop flow, removed 13 redundant places. [2024-10-14 19:54:52,541 INFO L231 Difference]: Finished difference. Result has 424 places, 572 transitions, 13752 flow [2024-10-14 19:54:52,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10947, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=391, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=13752, PETRI_PLACES=424, PETRI_TRANSITIONS=572} [2024-10-14 19:54:52,541 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 398 predicate places. [2024-10-14 19:54:52,542 INFO L471 AbstractCegarLoop]: Abstraction has has 424 places, 572 transitions, 13752 flow [2024-10-14 19:54:52,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:52,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:52,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:52,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-14 19:54:52,742 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,SelfDestructingSolverStorable17 [2024-10-14 19:54:52,742 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:52,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2094326443, now seen corresponding path program 13 times [2024-10-14 19:54:52,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:52,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160170311] [2024-10-14 19:54:52,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:52,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:52,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:52,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160170311] [2024-10-14 19:54:52,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160170311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:52,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398188170] [2024-10-14 19:54:52,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:54:52,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:52,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:52,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:52,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 19:54:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:52,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:54:52,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:53,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398188170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:53,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:53,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-14 19:54:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865659825] [2024-10-14 19:54:53,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:53,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:54:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:54:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:54:53,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:53,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 572 transitions, 13752 flow. Second operand has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:53,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:53,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:53,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:55,080 INFO L124 PetriNetUnfolderBase]: 1469/2751 cut-off events. [2024-10-14 19:54:55,080 INFO L125 PetriNetUnfolderBase]: For 72187/72187 co-relation queries the response was YES. [2024-10-14 19:54:55,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28477 conditions, 2751 events. 1469/2751 cut-off events. For 72187/72187 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17192 event pairs, 75 based on Foata normal form. 4/2755 useless extension candidates. Maximal degree in co-relation 28252. Up to 991 conditions per place. [2024-10-14 19:54:55,106 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 277 selfloop transitions, 498 changer transitions 16/792 dead transitions. [2024-10-14 19:54:55,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 792 transitions, 18889 flow [2024-10-14 19:54:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-14 19:54:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-10-14 19:54:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 467 transitions. [2024-10-14 19:54:55,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37419871794871795 [2024-10-14 19:54:55,109 INFO L175 Difference]: Start difference. First operand has 424 places, 572 transitions, 13752 flow. Second operand 52 states and 467 transitions. [2024-10-14 19:54:55,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 792 transitions, 18889 flow [2024-10-14 19:54:55,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 792 transitions, 17838 flow, removed 387 selfloop flow, removed 31 redundant places. [2024-10-14 19:54:55,506 INFO L231 Difference]: Finished difference. Result has 451 places, 675 transitions, 17017 flow [2024-10-14 19:54:55,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12987, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=17017, PETRI_PLACES=451, PETRI_TRANSITIONS=675} [2024-10-14 19:54:55,507 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 425 predicate places. [2024-10-14 19:54:55,507 INFO L471 AbstractCegarLoop]: Abstraction has has 451 places, 675 transitions, 17017 flow [2024-10-14 19:54:55,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:55,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:55,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:55,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-14 19:54:55,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:55,708 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:55,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1587791555, now seen corresponding path program 1 times [2024-10-14 19:54:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:55,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349446307] [2024-10-14 19:54:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:55,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:55,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:55,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349446307] [2024-10-14 19:54:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349446307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863407944] [2024-10-14 19:54:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:55,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:55,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:55,967 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:55,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 19:54:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:56,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:54:56,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:56,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:56,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863407944] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:56,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:56,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-10-14 19:54:56,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52154804] [2024-10-14 19:54:56,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:56,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-14 19:54:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:56,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-14 19:54:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2024-10-14 19:54:56,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:56,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 675 transitions, 17017 flow. Second operand has 29 states, 29 states have (on average 5.482758620689655) internal successors, (159), 29 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:56,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:56,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:56,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:57,737 INFO L124 PetriNetUnfolderBase]: 1467/2744 cut-off events. [2024-10-14 19:54:57,737 INFO L125 PetriNetUnfolderBase]: For 69355/69355 co-relation queries the response was YES. [2024-10-14 19:54:57,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28573 conditions, 2744 events. 1467/2744 cut-off events. For 69355/69355 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17099 event pairs, 89 based on Foata normal form. 2/2746 useless extension candidates. Maximal degree in co-relation 28351. Up to 920 conditions per place. [2024-10-14 19:54:57,769 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 302 selfloop transitions, 450 changer transitions 24/777 dead transitions. [2024-10-14 19:54:57,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 777 transitions, 19294 flow [2024-10-14 19:54:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-14 19:54:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-14 19:54:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 358 transitions. [2024-10-14 19:54:57,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3925438596491228 [2024-10-14 19:54:57,770 INFO L175 Difference]: Start difference. First operand has 451 places, 675 transitions, 17017 flow. Second operand 38 states and 358 transitions. [2024-10-14 19:54:57,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 777 transitions, 19294 flow [2024-10-14 19:54:58,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 777 transitions, 18654 flow, removed 179 selfloop flow, removed 22 redundant places. [2024-10-14 19:54:58,164 INFO L231 Difference]: Finished difference. Result has 467 places, 674 transitions, 17355 flow [2024-10-14 19:54:58,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16410, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17355, PETRI_PLACES=467, PETRI_TRANSITIONS=674} [2024-10-14 19:54:58,165 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 441 predicate places. [2024-10-14 19:54:58,165 INFO L471 AbstractCegarLoop]: Abstraction has has 467 places, 674 transitions, 17355 flow [2024-10-14 19:54:58,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.482758620689655) internal successors, (159), 29 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:58,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:58,166 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:54:58,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 19:54:58,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:58,366 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:54:58,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1002734824, now seen corresponding path program 14 times [2024-10-14 19:54:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:54:58,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127325919] [2024-10-14 19:54:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:54:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:58,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:54:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127325919] [2024-10-14 19:54:58,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127325919] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:54:58,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612033168] [2024-10-14 19:54:58,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:54:58,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:54:58,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:58,570 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:54:58,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 19:54:58,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:54:58,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:54:58,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:54:58,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:58,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:59,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612033168] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:59,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:54:59,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-14 19:54:59,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39301683] [2024-10-14 19:54:59,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:59,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 19:54:59,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:54:59,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 19:54:59,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-10-14 19:54:59,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:54:59,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 674 transitions, 17355 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:59,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:59,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:54:59,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:05,800 INFO L124 PetriNetUnfolderBase]: 3132/5806 cut-off events. [2024-10-14 19:55:05,801 INFO L125 PetriNetUnfolderBase]: For 169034/169034 co-relation queries the response was YES. [2024-10-14 19:55:05,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62654 conditions, 5806 events. 3132/5806 cut-off events. For 169034/169034 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 41603 event pairs, 107 based on Foata normal form. 91/5897 useless extension candidates. Maximal degree in co-relation 62420. Up to 1530 conditions per place. [2024-10-14 19:55:05,868 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 539 selfloop transitions, 1171 changer transitions 42/1753 dead transitions. [2024-10-14 19:55:05,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 1753 transitions, 43318 flow [2024-10-14 19:55:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2024-10-14 19:55:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2024-10-14 19:55:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 1472 transitions. [2024-10-14 19:55:05,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3717171717171717 [2024-10-14 19:55:05,871 INFO L175 Difference]: Start difference. First operand has 467 places, 674 transitions, 17355 flow. Second operand 165 states and 1472 transitions. [2024-10-14 19:55:05,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 1753 transitions, 43318 flow [2024-10-14 19:55:06,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 1753 transitions, 41386 flow, removed 126 selfloop flow, removed 37 redundant places. [2024-10-14 19:55:06,897 INFO L231 Difference]: Finished difference. Result has 647 places, 1373 transitions, 38821 flow [2024-10-14 19:55:06,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16427, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=535, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=165, PETRI_FLOW=38821, PETRI_PLACES=647, PETRI_TRANSITIONS=1373} [2024-10-14 19:55:06,898 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 621 predicate places. [2024-10-14 19:55:06,898 INFO L471 AbstractCegarLoop]: Abstraction has has 647 places, 1373 transitions, 38821 flow [2024-10-14 19:55:06,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:06,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:06,899 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:06,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-14 19:55:07,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:55:07,104 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:55:07,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1135006864, now seen corresponding path program 15 times [2024-10-14 19:55:07,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:55:07,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702189751] [2024-10-14 19:55:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:55:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:07,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:55:07,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702189751] [2024-10-14 19:55:07,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702189751] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:55:07,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059787850] [2024-10-14 19:55:07,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:55:07,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:55:07,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:55:07,314 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:55:07,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 19:55:07,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:55:07,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:55:07,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:55:07,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:07,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:07,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059787850] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:07,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:55:07,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-14 19:55:07,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84124843] [2024-10-14 19:55:07,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:07,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 19:55:07,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:55:07,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 19:55:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-10-14 19:55:07,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:55:07,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1373 transitions, 38821 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:07,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:07,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:55:07,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:15,433 INFO L124 PetriNetUnfolderBase]: 4423/7986 cut-off events. [2024-10-14 19:55:15,433 INFO L125 PetriNetUnfolderBase]: For 391174/391174 co-relation queries the response was YES. [2024-10-14 19:55:15,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100761 conditions, 7986 events. 4423/7986 cut-off events. For 391174/391174 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 57076 event pairs, 104 based on Foata normal form. 16/8002 useless extension candidates. Maximal degree in co-relation 100595. Up to 2363 conditions per place. [2024-10-14 19:55:15,549 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 634 selfloop transitions, 1571 changer transitions 31/2237 dead transitions. [2024-10-14 19:55:15,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 2237 transitions, 63223 flow [2024-10-14 19:55:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-10-14 19:55:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2024-10-14 19:55:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 1243 transitions. [2024-10-14 19:55:15,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3865049751243781 [2024-10-14 19:55:15,552 INFO L175 Difference]: Start difference. First operand has 647 places, 1373 transitions, 38821 flow. Second operand 134 states and 1243 transitions. [2024-10-14 19:55:15,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 2237 transitions, 63223 flow [2024-10-14 19:55:19,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 747 places, 2237 transitions, 60756 flow, removed 1074 selfloop flow, removed 26 redundant places. [2024-10-14 19:55:19,232 INFO L231 Difference]: Finished difference. Result has 768 places, 1865 transitions, 55579 flow [2024-10-14 19:55:19,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=36811, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=134, PETRI_FLOW=55579, PETRI_PLACES=768, PETRI_TRANSITIONS=1865} [2024-10-14 19:55:19,234 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 742 predicate places. [2024-10-14 19:55:19,234 INFO L471 AbstractCegarLoop]: Abstraction has has 768 places, 1865 transitions, 55579 flow [2024-10-14 19:55:19,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:19,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:19,235 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:19,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:19,435 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,SelfDestructingSolverStorable21 [2024-10-14 19:55:19,435 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:55:19,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2105414214, now seen corresponding path program 16 times [2024-10-14 19:55:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:55:19,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121802598] [2024-10-14 19:55:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:19,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:55:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:19,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:55:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121802598] [2024-10-14 19:55:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121802598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:55:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021736171] [2024-10-14 19:55:19,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:55:19,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:55:19,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:55:19,606 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:55:19,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 19:55:19,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:55:19,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:55:19,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:55:19,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:19,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021736171] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:20,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:55:20,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-14 19:55:20,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120876897] [2024-10-14 19:55:20,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:20,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 19:55:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:55:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 19:55:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-10-14 19:55:20,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:55:20,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 1865 transitions, 55579 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:20,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:20,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:55:20,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:26,258 INFO L124 PetriNetUnfolderBase]: 4857/8732 cut-off events. [2024-10-14 19:55:26,258 INFO L125 PetriNetUnfolderBase]: For 465757/465757 co-relation queries the response was YES. [2024-10-14 19:55:26,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115221 conditions, 8732 events. 4857/8732 cut-off events. For 465757/465757 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 63321 event pairs, 213 based on Foata normal form. 3/8735 useless extension candidates. Maximal degree in co-relation 115006. Up to 4820 conditions per place. [2024-10-14 19:55:26,554 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 844 selfloop transitions, 1363 changer transitions 13/2221 dead transitions. [2024-10-14 19:55:26,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 824 places, 2221 transitions, 68730 flow [2024-10-14 19:55:26,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-10-14 19:55:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2024-10-14 19:55:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 582 transitions. [2024-10-14 19:55:26,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35144927536231885 [2024-10-14 19:55:26,556 INFO L175 Difference]: Start difference. First operand has 768 places, 1865 transitions, 55579 flow. Second operand 69 states and 582 transitions. [2024-10-14 19:55:26,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 824 places, 2221 transitions, 68730 flow [2024-10-14 19:55:31,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 2221 transitions, 67379 flow, removed 396 selfloop flow, removed 53 redundant places. [2024-10-14 19:55:31,063 INFO L231 Difference]: Finished difference. Result has 785 places, 2067 transitions, 64701 flow [2024-10-14 19:55:31,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54406, PETRI_DIFFERENCE_MINUEND_PLACES=703, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=64701, PETRI_PLACES=785, PETRI_TRANSITIONS=2067} [2024-10-14 19:55:31,065 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 759 predicate places. [2024-10-14 19:55:31,065 INFO L471 AbstractCegarLoop]: Abstraction has has 785 places, 2067 transitions, 64701 flow [2024-10-14 19:55:31,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:31,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:31,065 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:31,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:31,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:55:31,266 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:55:31,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash 917123002, now seen corresponding path program 17 times [2024-10-14 19:55:31,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:55:31,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632358103] [2024-10-14 19:55:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:55:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:31,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:55:31,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632358103] [2024-10-14 19:55:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632358103] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:55:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835178845] [2024-10-14 19:55:31,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:55:31,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:55:31,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:55:31,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:55:31,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 19:55:31,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:55:31,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:55:31,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:55:31,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:31,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835178845] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:31,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:55:31,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-14 19:55:31,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535830914] [2024-10-14 19:55:31,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:31,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 19:55:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:55:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 19:55:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-10-14 19:55:31,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-10-14 19:55:31,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 785 places, 2067 transitions, 64701 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:31,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:31,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-10-14 19:55:31,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:42,375 INFO L124 PetriNetUnfolderBase]: 7138/12758 cut-off events. [2024-10-14 19:55:42,375 INFO L125 PetriNetUnfolderBase]: For 690491/690491 co-relation queries the response was YES. [2024-10-14 19:55:42,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173858 conditions, 12758 events. 7138/12758 cut-off events. For 690491/690491 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 99387 event pairs, 230 based on Foata normal form. 10/12768 useless extension candidates. Maximal degree in co-relation 173673. Up to 4325 conditions per place. [2024-10-14 19:55:42,810 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 971 selfloop transitions, 2391 changer transitions 30/3393 dead transitions. [2024-10-14 19:55:42,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 3393 transitions, 109521 flow [2024-10-14 19:55:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-10-14 19:55:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2024-10-14 19:55:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 1106 transitions. [2024-10-14 19:55:42,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3517811704834606 [2024-10-14 19:55:42,814 INFO L175 Difference]: Start difference. First operand has 785 places, 2067 transitions, 64701 flow. Second operand 131 states and 1106 transitions. [2024-10-14 19:55:42,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 3393 transitions, 109521 flow