./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/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d 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/parallel-misc-5.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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:39:42,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:39:42,387 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:39:42,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:39:42,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:39:42,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:39:42,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:39:42,424 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:39:42,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:39:42,427 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:39:42,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:39:42,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:39:42,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:39:42,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:39:42,429 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:39:42,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:39:42,429 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:39:42,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:39:42,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:39:42,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:39:42,434 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:39:42,435 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:39:42,436 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:39:42,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:39:42,436 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:39:42,436 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:39:42,437 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:39:42,437 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:39:42,437 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:39:42,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:39:42,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:39:42,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:39:42,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:39:42,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:39:42,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:39:42,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:39:42,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:39:42,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:39:42,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:39:42,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:39:42,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:39:42,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:39:42,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-10-13 12:39:42,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:39:42,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:39:42,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:39:42,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:39:42,748 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:39:42,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-13 12:39:44,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:39:44,408 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:39:44,409 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-13 12:39:44,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191a96abb/0271002bc1d848e1a1272f45cc44dd58/FLAG72a28ccea [2024-10-13 12:39:44,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191a96abb/0271002bc1d848e1a1272f45cc44dd58 [2024-10-13 12:39:44,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:39:44,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:39:44,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:39:44,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:39:44,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:39:44,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f328804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44, skipping insertion in model container [2024-10-13 12:39:44,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,471 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:39:44,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:39:44,691 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:39:44,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:39:44,737 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:39:44,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44 WrapperNode [2024-10-13 12:39:44,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:39:44,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:39:44,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:39:44,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:39:44,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,782 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-10-13 12:39:44,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:39:44,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:39:44,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:39:44,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:39:44,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,811 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]. [2024-10-13 12:39:44,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:39:44,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:39:44,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:39:44,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:39:44,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (1/1) ... [2024-10-13 12:39:44,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:39:44,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:44,881 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) [2024-10-13 12:39:44,885 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 [2024-10-13 12:39:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:39:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:39:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:39:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:39:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:39:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:39:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:39:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:39:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:39:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:39:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:39:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:39:44,942 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:39:45,070 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:39:45,074 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:39:45,375 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:39:45,375 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:39:45,568 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:39:45,569 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 12:39:45,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:39:45 BoogieIcfgContainer [2024-10-13 12:39:45,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:39:45,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:39:45,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:39:45,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:39:45,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:39:44" (1/3) ... [2024-10-13 12:39:45,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c8233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:39:45, skipping insertion in model container [2024-10-13 12:39:45,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:44" (2/3) ... [2024-10-13 12:39:45,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c8233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:39:45, skipping insertion in model container [2024-10-13 12:39:45,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:39:45" (3/3) ... [2024-10-13 12:39:45,581 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-10-13 12:39:45,599 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:39:45,601 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:39:45,601 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:39:45,672 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:39:45,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 99 flow [2024-10-13 12:39:45,742 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-10-13 12:39:45,743 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:39:45,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 4/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-13 12:39:45,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 99 flow [2024-10-13 12:39:45,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 88 flow [2024-10-13 12:39:45,759 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:39:45,767 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;@167dceb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:39:45,767 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 12:39:45,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:39:45,787 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-10-13 12:39:45,787 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:39:45,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:45,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:45,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:45,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:45,795 INFO L85 PathProgramCache]: Analyzing trace with hash -912570270, now seen corresponding path program 1 times [2024-10-13 12:39:45,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:45,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633668125] [2024-10-13 12:39:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:45,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:46,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:46,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633668125] [2024-10-13 12:39:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633668125] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:46,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:46,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:39:46,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391329748] [2024-10-13 12:39:46,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:46,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:39:46,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:39:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:39:46,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-10-13 12:39:46,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:39:46,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:46,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-10-13 12:39:46,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:47,388 INFO L124 PetriNetUnfolderBase]: 2009/2876 cut-off events. [2024-10-13 12:39:47,388 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-10-13 12:39:47,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 2876 events. 2009/2876 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 13733 event pairs, 73 based on Foata normal form. 1/2342 useless extension candidates. Maximal degree in co-relation 5564. Up to 990 conditions per place. [2024-10-13 12:39:47,418 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 73 selfloop transitions, 8 changer transitions 6/94 dead transitions. [2024-10-13 12:39:47,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 94 transitions, 404 flow [2024-10-13 12:39:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:39:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:39:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-10-13 12:39:47,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 12:39:47,436 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 88 flow. Second operand 6 states and 156 transitions. [2024-10-13 12:39:47,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 94 transitions, 404 flow [2024-10-13 12:39:47,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 94 transitions, 376 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:39:47,447 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 122 flow [2024-10-13 12:39:47,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-10-13 12:39:47,455 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-10-13 12:39:47,456 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 122 flow [2024-10-13 12:39:47,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-13 12:39:47,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:47,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:47,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:39:47,457 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:47,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1854899698, now seen corresponding path program 1 times [2024-10-13 12:39:47,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:47,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793719342] [2024-10-13 12:39:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:47,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793719342] [2024-10-13 12:39:47,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793719342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:47,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:47,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:39:47,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359813751] [2024-10-13 12:39:47,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:47,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:39:47,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:39:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:39:47,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-13 12:39:47,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:47,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:47,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-13 12:39:47,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:47,832 INFO L124 PetriNetUnfolderBase]: 1279/2023 cut-off events. [2024-10-13 12:39:47,832 INFO L125 PetriNetUnfolderBase]: For 614/661 co-relation queries the response was YES. [2024-10-13 12:39:47,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 2023 events. 1279/2023 cut-off events. For 614/661 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10410 event pairs, 423 based on Foata normal form. 88/1764 useless extension candidates. Maximal degree in co-relation 3193. Up to 1126 conditions per place. [2024-10-13 12:39:47,849 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 45 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-13 12:39:47,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 273 flow [2024-10-13 12:39:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:39:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:39:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-13 12:39:47,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7350427350427351 [2024-10-13 12:39:47,851 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 122 flow. Second operand 3 states and 86 transitions. [2024-10-13 12:39:47,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 273 flow [2024-10-13 12:39:47,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:39:47,854 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 138 flow [2024-10-13 12:39:47,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-10-13 12:39:47,855 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-10-13 12:39:47,856 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 138 flow [2024-10-13 12:39:47,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:47,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:47,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:47,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:39:47,857 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:47,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1337608478, now seen corresponding path program 1 times [2024-10-13 12:39:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:47,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690886018] [2024-10-13 12:39:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:47,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:47,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690886018] [2024-10-13 12:39:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690886018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:47,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:47,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:39:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830753977] [2024-10-13 12:39:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:47,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:39:47,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:39:47,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:39:47,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-13 12:39:47,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:47,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:47,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-13 12:39:47,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:48,279 INFO L124 PetriNetUnfolderBase]: 1740/2768 cut-off events. [2024-10-13 12:39:48,279 INFO L125 PetriNetUnfolderBase]: For 1030/1063 co-relation queries the response was YES. [2024-10-13 12:39:48,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 2768 events. 1740/2768 cut-off events. For 1030/1063 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14866 event pairs, 585 based on Foata normal form. 107/2338 useless extension candidates. Maximal degree in co-relation 4769. Up to 1579 conditions per place. [2024-10-13 12:39:48,304 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 44 selfloop transitions, 2 changer transitions 1/60 dead transitions. [2024-10-13 12:39:48,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 297 flow [2024-10-13 12:39:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:39:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:39:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-13 12:39:48,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-10-13 12:39:48,307 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 138 flow. Second operand 3 states and 84 transitions. [2024-10-13 12:39:48,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 297 flow [2024-10-13 12:39:48,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:48,311 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 150 flow [2024-10-13 12:39:48,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-10-13 12:39:48,312 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-10-13 12:39:48,312 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 150 flow [2024-10-13 12:39:48,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:48,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:48,313 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:48,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:39:48,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:48,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash -752747674, now seen corresponding path program 1 times [2024-10-13 12:39:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:48,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500991976] [2024-10-13 12:39:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:39:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500991976] [2024-10-13 12:39:48,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500991976] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298772481] [2024-10-13 12:39:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:48,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:48,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:48,562 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) [2024-10-13 12:39:48,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:39:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:48,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:39:48,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:39:48,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:39:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298772481] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:48,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 9 [2024-10-13 12:39:48,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2644557] [2024-10-13 12:39:48,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:48,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:39:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:48,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:39:48,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:39:48,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-10-13 12:39:48,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 150 flow. Second operand has 9 states, 9 states have (on average 16.0) internal successors, (144), 9 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:48,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:48,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-10-13 12:39:48,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:49,574 INFO L124 PetriNetUnfolderBase]: 3359/4934 cut-off events. [2024-10-13 12:39:49,574 INFO L125 PetriNetUnfolderBase]: For 2391/2431 co-relation queries the response was YES. [2024-10-13 12:39:49,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12396 conditions, 4934 events. 3359/4934 cut-off events. For 2391/2431 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 24558 event pairs, 63 based on Foata normal form. 40/4300 useless extension candidates. Maximal degree in co-relation 10943. Up to 1697 conditions per place. [2024-10-13 12:39:49,604 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 84 selfloop transitions, 9 changer transitions 15/117 dead transitions. [2024-10-13 12:39:49,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 117 transitions, 624 flow [2024-10-13 12:39:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:39:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:39:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-10-13 12:39:49,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2024-10-13 12:39:49,609 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 150 flow. Second operand 8 states and 185 transitions. [2024-10-13 12:39:49,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 117 transitions, 624 flow [2024-10-13 12:39:49,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 117 transitions, 617 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:49,617 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 203 flow [2024-10-13 12:39:49,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-10-13 12:39:49,619 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-10-13 12:39:49,620 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 203 flow [2024-10-13 12:39:49,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.0) internal successors, (144), 9 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:49,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:49,620 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:49,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:39:49,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:49,821 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:49,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash -366690366, now seen corresponding path program 2 times [2024-10-13 12:39:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:49,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062102174] [2024-10-13 12:39:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:49,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:39:49,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:49,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062102174] [2024-10-13 12:39:49,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062102174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:49,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:49,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:49,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618880790] [2024-10-13 12:39:49,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:49,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:50,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:50,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-10-13 12:39:50,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-13 12:39:50,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:50,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-10-13 12:39:50,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:50,715 INFO L124 PetriNetUnfolderBase]: 4986/7387 cut-off events. [2024-10-13 12:39:50,716 INFO L125 PetriNetUnfolderBase]: For 6100/6244 co-relation queries the response was YES. [2024-10-13 12:39:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19641 conditions, 7387 events. 4986/7387 cut-off events. For 6100/6244 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 39119 event pairs, 1208 based on Foata normal form. 298/6747 useless extension candidates. Maximal degree in co-relation 14595. Up to 3065 conditions per place. [2024-10-13 12:39:50,767 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 68 selfloop transitions, 7 changer transitions 3/87 dead transitions. [2024-10-13 12:39:50,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 503 flow [2024-10-13 12:39:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-10-13 12:39:50,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6102564102564103 [2024-10-13 12:39:50,769 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 203 flow. Second operand 5 states and 119 transitions. [2024-10-13 12:39:50,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 503 flow [2024-10-13 12:39:50,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 503 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:39:50,790 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 214 flow [2024-10-13 12:39:50,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2024-10-13 12:39:50,791 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-10-13 12:39:50,792 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 214 flow [2024-10-13 12:39:50,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-13 12:39:50,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:50,792 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:50,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:39:50,793 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:50,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1309263434, now seen corresponding path program 3 times [2024-10-13 12:39:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:50,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864632375] [2024-10-13 12:39:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:50,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:51,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:51,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864632375] [2024-10-13 12:39:51,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864632375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:51,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900078939] [2024-10-13 12:39:51,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:39:51,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:51,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:51,154 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) [2024-10-13 12:39:51,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:39:51,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:39:51,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:51,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:39:51,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:51,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:51,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900078939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:51,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:51,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-10-13 12:39:51,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077647243] [2024-10-13 12:39:51,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:51,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:39:51,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:51,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:39:51,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-13 12:39:51,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-10-13 12:39:51,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 214 flow. Second operand has 16 states, 16 states have (on average 12.75) internal successors, (204), 16 states have internal predecessors, (204), 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) [2024-10-13 12:39:51,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:51,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-10-13 12:39:51,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:54,520 INFO L124 PetriNetUnfolderBase]: 11560/17255 cut-off events. [2024-10-13 12:39:54,521 INFO L125 PetriNetUnfolderBase]: For 18202/18202 co-relation queries the response was YES. [2024-10-13 12:39:54,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47853 conditions, 17255 events. 11560/17255 cut-off events. For 18202/18202 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 100972 event pairs, 885 based on Foata normal form. 532/15948 useless extension candidates. Maximal degree in co-relation 41361. Up to 3880 conditions per place. [2024-10-13 12:39:54,658 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 304 selfloop transitions, 100 changer transitions 37/446 dead transitions. [2024-10-13 12:39:54,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 446 transitions, 2612 flow [2024-10-13 12:39:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-13 12:39:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-13 12:39:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 691 transitions. [2024-10-13 12:39:54,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5536858974358975 [2024-10-13 12:39:54,663 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 214 flow. Second operand 32 states and 691 transitions. [2024-10-13 12:39:54,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 446 transitions, 2612 flow [2024-10-13 12:39:54,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 446 transitions, 2538 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-10-13 12:39:54,739 INFO L231 Difference]: Finished difference. Result has 113 places, 143 transitions, 1227 flow [2024-10-13 12:39:54,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1227, PETRI_PLACES=113, PETRI_TRANSITIONS=143} [2024-10-13 12:39:54,741 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-10-13 12:39:54,741 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 143 transitions, 1227 flow [2024-10-13 12:39:54,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.75) internal successors, (204), 16 states have internal predecessors, (204), 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) [2024-10-13 12:39:54,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:54,742 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:54,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 12:39:54,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 12:39:54,946 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:54,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:54,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1084645138, now seen corresponding path program 4 times [2024-10-13 12:39:54,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:54,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410821894] [2024-10-13 12:39:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:54,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:39:55,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:55,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410821894] [2024-10-13 12:39:55,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410821894] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:55,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50813494] [2024-10-13 12:39:55,120 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:39:55,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:55,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:55,122 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) [2024-10-13 12:39:55,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:39:55,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:39:55,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:55,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:39:55,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:55,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:39:55,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50813494] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:55,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:55,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-10-13 12:39:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570377324] [2024-10-13 12:39:55,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:55,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:39:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:39:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:39:55,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-13 12:39:55,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 143 transitions, 1227 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-13 12:39:55,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:55,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-13 12:39:55,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:57,797 INFO L124 PetriNetUnfolderBase]: 10581/17056 cut-off events. [2024-10-13 12:39:57,798 INFO L125 PetriNetUnfolderBase]: For 91802/92182 co-relation queries the response was YES. [2024-10-13 12:39:57,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68207 conditions, 17056 events. 10581/17056 cut-off events. For 91802/92182 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 113143 event pairs, 4583 based on Foata normal form. 458/15458 useless extension candidates. Maximal degree in co-relation 64675. Up to 6178 conditions per place. [2024-10-13 12:39:58,036 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 203 selfloop transitions, 34 changer transitions 0/279 dead transitions. [2024-10-13 12:39:58,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 279 transitions, 2806 flow [2024-10-13 12:39:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:39:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:39:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-10-13 12:39:58,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7756410256410257 [2024-10-13 12:39:58,037 INFO L175 Difference]: Start difference. First operand has 113 places, 143 transitions, 1227 flow. Second operand 4 states and 121 transitions. [2024-10-13 12:39:58,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 279 transitions, 2806 flow [2024-10-13 12:39:58,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 279 transitions, 2452 flow, removed 147 selfloop flow, removed 8 redundant places. [2024-10-13 12:39:58,402 INFO L231 Difference]: Finished difference. Result has 110 places, 169 transitions, 1457 flow [2024-10-13 12:39:58,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1457, PETRI_PLACES=110, PETRI_TRANSITIONS=169} [2024-10-13 12:39:58,403 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-10-13 12:39:58,403 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 169 transitions, 1457 flow [2024-10-13 12:39:58,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-13 12:39:58,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:58,403 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:58,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 12:39:58,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:58,605 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:58,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2054651024, now seen corresponding path program 1 times [2024-10-13 12:39:58,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:58,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786689867] [2024-10-13 12:39:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:39:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:58,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786689867] [2024-10-13 12:39:58,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786689867] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:58,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993169840] [2024-10-13 12:39:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:58,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:58,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:58,799 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) [2024-10-13 12:39:58,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:39:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:58,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:39:58,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:58,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:39:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993169840] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:58,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:58,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-10-13 12:39:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247733294] [2024-10-13 12:39:58,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:58,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:39:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:39:58,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:39:58,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-13 12:39:58,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 169 transitions, 1457 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-13 12:39:58,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:58,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-13 12:39:58,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:40:03,244 INFO L124 PetriNetUnfolderBase]: 20992/33806 cut-off events. [2024-10-13 12:40:03,245 INFO L125 PetriNetUnfolderBase]: For 174701/175658 co-relation queries the response was YES. [2024-10-13 12:40:03,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132434 conditions, 33806 events. 20992/33806 cut-off events. For 174701/175658 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 248702 event pairs, 8088 based on Foata normal form. 1079/30595 useless extension candidates. Maximal degree in co-relation 119652. Up to 12950 conditions per place. [2024-10-13 12:40:03,672 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 253 selfloop transitions, 40 changer transitions 0/335 dead transitions. [2024-10-13 12:40:03,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 335 transitions, 3540 flow [2024-10-13 12:40:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:40:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:40:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-13 12:40:03,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-13 12:40:03,674 INFO L175 Difference]: Start difference. First operand has 110 places, 169 transitions, 1457 flow. Second operand 4 states and 117 transitions. [2024-10-13 12:40:03,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 335 transitions, 3540 flow [2024-10-13 12:40:04,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 335 transitions, 3434 flow, removed 53 selfloop flow, removed 0 redundant places. [2024-10-13 12:40:04,127 INFO L231 Difference]: Finished difference. Result has 115 places, 200 transitions, 1908 flow [2024-10-13 12:40:04,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=115, PETRI_TRANSITIONS=200} [2024-10-13 12:40:04,129 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2024-10-13 12:40:04,129 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 200 transitions, 1908 flow [2024-10-13 12:40:04,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-13 12:40:04,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:40:04,130 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:40:04,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:40:04,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:04,331 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:40:04,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:40:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1137537408, now seen corresponding path program 5 times [2024-10-13 12:40:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:40:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772678405] [2024-10-13 12:40:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:40:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:40:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:40:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:40:04,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:40:04,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772678405] [2024-10-13 12:40:04,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772678405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:40:04,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955549837] [2024-10-13 12:40:04,808 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:40:04,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:04,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:40:04,811 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) [2024-10-13 12:40:04,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:40:04,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 12:40:04,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:40:04,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:40:04,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:40:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:40:05,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:40:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:40:05,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955549837] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:40:05,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:40:05,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 22 [2024-10-13 12:40:05,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177480911] [2024-10-13 12:40:05,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:40:05,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 12:40:05,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:40:05,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 12:40:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-10-13 12:40:05,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-10-13 12:40:05,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 200 transitions, 1908 flow. Second operand has 23 states, 23 states have (on average 14.521739130434783) internal successors, (334), 23 states have internal predecessors, (334), 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) [2024-10-13 12:40:05,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:40:05,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-10-13 12:40:05,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:40:28,439 INFO L124 PetriNetUnfolderBase]: 102849/156997 cut-off events. [2024-10-13 12:40:28,439 INFO L125 PetriNetUnfolderBase]: For 944768/946445 co-relation queries the response was YES. [2024-10-13 12:40:29,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650586 conditions, 156997 events. 102849/156997 cut-off events. For 944768/946445 co-relation queries the response was YES. Maximal size of possible extension queue 4362. Compared 1257802 event pairs, 12783 based on Foata normal form. 6799/146148 useless extension candidates. Maximal degree in co-relation 551834. Up to 20974 conditions per place. [2024-10-13 12:40:29,700 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 850 selfloop transitions, 716 changer transitions 421/2012 dead transitions. [2024-10-13 12:40:29,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 2012 transitions, 22657 flow [2024-10-13 12:40:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-10-13 12:40:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-10-13 12:40:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 1683 transitions. [2024-10-13 12:40:29,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2024-10-13 12:40:29,707 INFO L175 Difference]: Start difference. First operand has 115 places, 200 transitions, 1908 flow. Second operand 72 states and 1683 transitions. [2024-10-13 12:40:29,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 2012 transitions, 22657 flow [2024-10-13 12:40:31,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 2012 transitions, 22181 flow, removed 238 selfloop flow, removed 0 redundant places. [2024-10-13 12:40:32,010 INFO L231 Difference]: Finished difference. Result has 204 places, 931 transitions, 13063 flow [2024-10-13 12:40:32,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=13063, PETRI_PLACES=204, PETRI_TRANSITIONS=931} [2024-10-13 12:40:32,011 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-10-13 12:40:32,011 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 931 transitions, 13063 flow [2024-10-13 12:40:32,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.521739130434783) internal successors, (334), 23 states have internal predecessors, (334), 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) [2024-10-13 12:40:32,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:40:32,013 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:40:32,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 12:40:32,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:32,218 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:40:32,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:40:32,218 INFO L85 PathProgramCache]: Analyzing trace with hash -714565062, now seen corresponding path program 2 times [2024-10-13 12:40:32,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:40:32,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734278934] [2024-10-13 12:40:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:40:32,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:40:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:40:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 12:40:32,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:40:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734278934] [2024-10-13 12:40:32,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734278934] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:40:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614397214] [2024-10-13 12:40:32,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:40:32,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:32,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:40:32,337 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) [2024-10-13 12:40:32,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:40:32,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:40:32,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:40:32,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:40:32,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:40:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:40:32,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:40:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 12:40:32,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614397214] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:40:32,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:40:32,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-10-13 12:40:32,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549250292] [2024-10-13 12:40:32,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:40:32,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:40:32,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:40:32,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:40:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:40:32,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-13 12:40:32,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 931 transitions, 13063 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2024-10-13 12:40:32,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:40:32,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-13 12:40:32,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand