./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:04:13,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:04:13,687 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:04:13,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:04:13,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:04:13,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:04:13,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:04:13,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:04:13,728 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:04:13,728 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:04:13,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:04:13,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:04:13,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:04:13,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:04:13,730 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:04:13,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:04:13,730 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:04:13,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:04:13,731 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:04:13,732 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:04:13,732 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:04:13,732 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:04:13,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:04:13,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:04:13,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:04:13,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:13,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:04:13,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:04:13,733 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:04:13,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:04:13,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:13,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:04:13,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:04:13,733 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:04:13,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:04:13,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:04:13,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:04:13,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:04:13,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:04:13,734 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2025-01-10 01:04:13,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:04:13,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:04:14,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:04:14,004 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:04:14,004 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:04:14,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2025-01-10 01:04:15,385 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3e83fcf0/1e786754140d4d068b1ead05ea1d8769/FLAGdb2ed62bc [2025-01-10 01:04:15,644 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:04:15,645 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2025-01-10 01:04:15,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3e83fcf0/1e786754140d4d068b1ead05ea1d8769/FLAGdb2ed62bc [2025-01-10 01:04:15,679 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3e83fcf0/1e786754140d4d068b1ead05ea1d8769 [2025-01-10 01:04:15,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:04:15,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:04:15,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:04:15,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:04:15,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:04:15,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20199ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15, skipping insertion in model container [2025-01-10 01:04:15,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:04:15,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:04:15,875 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:04:15,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:04:15,906 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:04:15,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15 WrapperNode [2025-01-10 01:04:15,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:04:15,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:04:15,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:04:15,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:04:15,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,934 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2025-01-10 01:04:15,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:04:15,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:04:15,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:04:15,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:04:15,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,959 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]. [2025-01-10 01:04:15,959 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,962 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:04:15,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:04:15,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:04:15,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:04:15,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (1/1) ... [2025-01-10 01:04:15,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:16,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 01:04:16,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 01:04:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:04:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 01:04:16,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 01:04:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 01:04:16,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 01:04:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 01:04:16,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 01:04:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:04:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:04:16,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:04:16,040 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:04:16,125 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:04:16,127 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:04:16,307 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:04:16,307 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:04:16,423 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:04:16,424 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:04:16,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:16 BoogieIcfgContainer [2025-01-10 01:04:16,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:04:16,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:04:16,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:04:16,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:04:16,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:04:15" (1/3) ... [2025-01-10 01:04:16,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dd215c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:16, skipping insertion in model container [2025-01-10 01:04:16,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:15" (2/3) ... [2025-01-10 01:04:16,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dd215c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:16, skipping insertion in model container [2025-01-10 01:04:16,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:16" (3/3) ... [2025-01-10 01:04:16,437 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2025-01-10 01:04:16,451 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:04:16,453 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-flipped-dist.wvr.c that has 4 procedures, 25 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-01-10 01:04:16,453 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:04:16,515 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 01:04:16,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2025-01-10 01:04:16,580 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2025-01-10 01:04:16,583 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 01:04:16,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-01-10 01:04:16,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2025-01-10 01:04:16,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2025-01-10 01:04:16,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:04:16,608 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;@6b3deb1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:04:16,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-10 01:04:16,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:04:16,626 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-01-10 01:04:16,626 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 01:04:16,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:16,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:16,627 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)] === [2025-01-10 01:04:16,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1743235272, now seen corresponding path program 1 times [2025-01-10 01:04:16,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:16,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807816474] [2025-01-10 01:04:16,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:16,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:16,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 01:04:16,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:16,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:16,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:17,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:17,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807816474] [2025-01-10 01:04:17,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807816474] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:17,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:17,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:04:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497799768] [2025-01-10 01:04:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:17,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:04:17,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:17,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:04:17,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:04:17,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:17,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-01-10 01:04:17,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:17,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:17,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:17,542 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2025-01-10 01:04:17,542 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-01-10 01:04:17,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1796 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2025-01-10 01:04:17,550 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2025-01-10 01:04:17,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2025-01-10 01:04:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:04:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:04:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2025-01-10 01:04:17,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 01:04:17,566 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2025-01-10 01:04:17,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2025-01-10 01:04:17,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-10 01:04:17,576 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2025-01-10 01:04:17,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2025-01-10 01:04:17,581 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2025-01-10 01:04:17,582 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2025-01-10 01:04:17,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-01-10 01:04:17,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:17,582 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:17,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:04:17,583 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)] === [2025-01-10 01:04:17,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1278103400, now seen corresponding path program 1 times [2025-01-10 01:04:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:17,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888562538] [2025-01-10 01:04:17,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:17,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:17,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:17,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:17,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:17,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:17,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888562538] [2025-01-10 01:04:17,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888562538] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:17,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:17,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:04:17,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534082981] [2025-01-10 01:04:17,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:17,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:04:17,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:17,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:04:17,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:04:17,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:17,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2025-01-10 01:04:17,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:17,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:17,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:17,989 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2025-01-10 01:04:17,989 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2025-01-10 01:04:17,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2440 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2025-01-10 01:04:17,996 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2025-01-10 01:04:17,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2025-01-10 01:04:17,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:04:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:04:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-01-10 01:04:17,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2025-01-10 01:04:18,000 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2025-01-10 01:04:18,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2025-01-10 01:04:18,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:18,002 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2025-01-10 01:04:18,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2025-01-10 01:04:18,003 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2025-01-10 01:04:18,003 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2025-01-10 01:04:18,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2025-01-10 01:04:18,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:18,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:18,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:04:18,004 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)] === [2025-01-10 01:04:18,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1592820705, now seen corresponding path program 1 times [2025-01-10 01:04:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:18,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133400037] [2025-01-10 01:04:18,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:18,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:18,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:18,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:18,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:18,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:18,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:18,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133400037] [2025-01-10 01:04:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133400037] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:04:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626225524] [2025-01-10 01:04:18,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:18,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:04:18,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:18,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:04:18,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:04:18,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:18,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2025-01-10 01:04:18,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:18,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:18,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:18,368 INFO L124 PetriNetUnfolderBase]: 546/820 cut-off events. [2025-01-10 01:04:18,368 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2025-01-10 01:04:18,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 820 events. 546/820 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3147 event pairs, 144 based on Foata normal form. 65/885 useless extension candidates. Maximal degree in co-relation 2002. Up to 373 conditions per place. [2025-01-10 01:04:18,376 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 50 selfloop transitions, 10 changer transitions 5/66 dead transitions. [2025-01-10 01:04:18,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 385 flow [2025-01-10 01:04:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:04:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:04:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2025-01-10 01:04:18,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2025-01-10 01:04:18,378 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 5 states and 82 transitions. [2025-01-10 01:04:18,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 385 flow [2025-01-10 01:04:18,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 373 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:18,382 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 199 flow [2025-01-10 01:04:18,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2025-01-10 01:04:18,383 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2025-01-10 01:04:18,383 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 199 flow [2025-01-10 01:04:18,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2025-01-10 01:04:18,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:18,384 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:18,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 01:04:18,384 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)] === [2025-01-10 01:04:18,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash -106981473, now seen corresponding path program 2 times [2025-01-10 01:04:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:18,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531185076] [2025-01-10 01:04:18,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:18,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:18,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:18,410 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:18,410 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:18,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:18,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:18,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531185076] [2025-01-10 01:04:18,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531185076] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:18,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717567033] [2025-01-10 01:04:18,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:18,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:18,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:18,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:18,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 01:04:18,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:18,630 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:18,630 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:18,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:18,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:04:18,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:18,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717567033] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:18,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:18,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2025-01-10 01:04:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327194358] [2025-01-10 01:04:18,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:18,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:04:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:18,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:04:18,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:04:18,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:18,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-01-10 01:04:18,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:18,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:18,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:18,908 INFO L124 PetriNetUnfolderBase]: 608/913 cut-off events. [2025-01-10 01:04:18,909 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2025-01-10 01:04:18,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 913 events. 608/913 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3407 event pairs, 156 based on Foata normal form. 31/944 useless extension candidates. Maximal degree in co-relation 2492. Up to 528 conditions per place. [2025-01-10 01:04:18,914 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 50 selfloop transitions, 7 changer transitions 10/68 dead transitions. [2025-01-10 01:04:18,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 501 flow [2025-01-10 01:04:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:04:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:04:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-01-10 01:04:18,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-01-10 01:04:18,918 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 199 flow. Second operand 4 states and 68 transitions. [2025-01-10 01:04:18,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 501 flow [2025-01-10 01:04:18,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 470 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:18,928 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 223 flow [2025-01-10 01:04:18,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2025-01-10 01:04:18,930 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2025-01-10 01:04:18,931 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 223 flow [2025-01-10 01:04:18,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-01-10 01:04:18,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:18,931 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:18,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 01:04:19,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:19,135 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)] === [2025-01-10 01:04:19,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1142586912, now seen corresponding path program 2 times [2025-01-10 01:04:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:19,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302509824] [2025-01-10 01:04:19,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:19,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:19,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:19,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:19,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:19,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:19,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302509824] [2025-01-10 01:04:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302509824] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:19,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:19,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:04:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124765142] [2025-01-10 01:04:19,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:19,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:04:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:19,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:04:19,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:04:19,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:19,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-01-10 01:04:19,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:19,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:19,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:19,400 INFO L124 PetriNetUnfolderBase]: 739/1132 cut-off events. [2025-01-10 01:04:19,401 INFO L125 PetriNetUnfolderBase]: For 3193/3193 co-relation queries the response was YES. [2025-01-10 01:04:19,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 1132 events. 739/1132 cut-off events. For 3193/3193 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4755 event pairs, 225 based on Foata normal form. 42/1174 useless extension candidates. Maximal degree in co-relation 3132. Up to 610 conditions per place. [2025-01-10 01:04:19,412 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 54 selfloop transitions, 10 changer transitions 4/69 dead transitions. [2025-01-10 01:04:19,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 523 flow [2025-01-10 01:04:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:04:19,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:04:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-01-10 01:04:19,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2025-01-10 01:04:19,413 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 223 flow. Second operand 4 states and 65 transitions. [2025-01-10 01:04:19,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 523 flow [2025-01-10 01:04:19,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 69 transitions, 508 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:19,423 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 279 flow [2025-01-10 01:04:19,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2025-01-10 01:04:19,426 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2025-01-10 01:04:19,426 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 279 flow [2025-01-10 01:04:19,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-01-10 01:04:19,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:19,427 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:19,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 01:04:19,427 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)] === [2025-01-10 01:04:19,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:19,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1587249773, now seen corresponding path program 3 times [2025-01-10 01:04:19,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:19,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360283340] [2025-01-10 01:04:19,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:19,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:19,436 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:19,454 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:19,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:19,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:19,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:19,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360283340] [2025-01-10 01:04:19,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360283340] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:19,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:19,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:04:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285712753] [2025-01-10 01:04:19,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:19,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:04:19,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:19,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:04:19,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:04:19,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:19,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-01-10 01:04:19,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:19,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:19,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:19,738 INFO L124 PetriNetUnfolderBase]: 825/1258 cut-off events. [2025-01-10 01:04:19,738 INFO L125 PetriNetUnfolderBase]: For 4697/4697 co-relation queries the response was YES. [2025-01-10 01:04:19,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 1258 events. 825/1258 cut-off events. For 4697/4697 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5196 event pairs, 254 based on Foata normal form. 40/1298 useless extension candidates. Maximal degree in co-relation 4090. Up to 845 conditions per place. [2025-01-10 01:04:19,750 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 54 selfloop transitions, 8 changer transitions 12/75 dead transitions. [2025-01-10 01:04:19,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 661 flow [2025-01-10 01:04:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:04:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:04:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-01-10 01:04:19,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-01-10 01:04:19,753 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 279 flow. Second operand 4 states and 68 transitions. [2025-01-10 01:04:19,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 661 flow [2025-01-10 01:04:19,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 623 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:19,763 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 314 flow [2025-01-10 01:04:19,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2025-01-10 01:04:19,765 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2025-01-10 01:04:19,765 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 314 flow [2025-01-10 01:04:19,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-01-10 01:04:19,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:19,765 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:19,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 01:04:19,766 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)] === [2025-01-10 01:04:19,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:19,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1339209044, now seen corresponding path program 3 times [2025-01-10 01:04:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566848748] [2025-01-10 01:04:19,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:19,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:19,786 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:19,786 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:19,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:19,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:19,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566848748] [2025-01-10 01:04:19,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566848748] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:19,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:19,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:04:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856296896] [2025-01-10 01:04:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:19,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:04:19,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:19,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:04:19,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:04:19,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:19,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-01-10 01:04:19,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:19,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:19,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:20,077 INFO L124 PetriNetUnfolderBase]: 972/1506 cut-off events. [2025-01-10 01:04:20,078 INFO L125 PetriNetUnfolderBase]: For 5940/5940 co-relation queries the response was YES. [2025-01-10 01:04:20,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6559 conditions, 1506 events. 972/1506 cut-off events. For 5940/5940 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6557 event pairs, 372 based on Foata normal form. 44/1550 useless extension candidates. Maximal degree in co-relation 4105. Up to 953 conditions per place. [2025-01-10 01:04:20,090 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 68 selfloop transitions, 6 changer transitions 13/88 dead transitions. [2025-01-10 01:04:20,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 88 transitions, 835 flow [2025-01-10 01:04:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:04:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:04:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2025-01-10 01:04:20,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-01-10 01:04:20,092 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 314 flow. Second operand 4 states and 62 transitions. [2025-01-10 01:04:20,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 88 transitions, 835 flow [2025-01-10 01:04:20,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 88 transitions, 826 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:20,100 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 366 flow [2025-01-10 01:04:20,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-01-10 01:04:20,102 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-01-10 01:04:20,102 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 366 flow [2025-01-10 01:04:20,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-01-10 01:04:20,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:20,102 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:20,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 01:04:20,103 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)] === [2025-01-10 01:04:20,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:20,103 INFO L85 PathProgramCache]: Analyzing trace with hash -952062254, now seen corresponding path program 1 times [2025-01-10 01:04:20,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:20,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163191582] [2025-01-10 01:04:20,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:20,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:20,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:20,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:20,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:20,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:20,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:20,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163191582] [2025-01-10 01:04:20,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163191582] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:20,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770865672] [2025-01-10 01:04:20,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:20,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:20,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:20,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:20,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 01:04:20,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:20,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:20,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:20,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:20,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:04:20,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:20,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:20,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770865672] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:20,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:20,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 01:04:20,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105550082] [2025-01-10 01:04:20,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:20,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:04:20,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:20,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:04:20,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:04:20,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:20,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 366 flow. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:20,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:20,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:20,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:21,003 INFO L124 PetriNetUnfolderBase]: 1166/1734 cut-off events. [2025-01-10 01:04:21,003 INFO L125 PetriNetUnfolderBase]: For 9426/9426 co-relation queries the response was YES. [2025-01-10 01:04:21,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8979 conditions, 1734 events. 1166/1734 cut-off events. For 9426/9426 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7536 event pairs, 275 based on Foata normal form. 117/1851 useless extension candidates. Maximal degree in co-relation 5917. Up to 830 conditions per place. [2025-01-10 01:04:21,018 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 76 selfloop transitions, 73 changer transitions 23/173 dead transitions. [2025-01-10 01:04:21,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 173 transitions, 1872 flow [2025-01-10 01:04:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 01:04:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 01:04:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2025-01-10 01:04:21,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-01-10 01:04:21,021 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 366 flow. Second operand 13 states and 189 transitions. [2025-01-10 01:04:21,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 173 transitions, 1872 flow [2025-01-10 01:04:21,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 173 transitions, 1784 flow, removed 28 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:21,036 INFO L231 Difference]: Finished difference. Result has 70 places, 101 transitions, 1288 flow [2025-01-10 01:04:21,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1288, PETRI_PLACES=70, PETRI_TRANSITIONS=101} [2025-01-10 01:04:21,037 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-01-10 01:04:21,037 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 101 transitions, 1288 flow [2025-01-10 01:04:21,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:21,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:21,037 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:21,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 01:04:21,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:21,238 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)] === [2025-01-10 01:04:21,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash -642681704, now seen corresponding path program 4 times [2025-01-10 01:04:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355409518] [2025-01-10 01:04:21,239 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:21,245 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:21,251 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:21,251 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:21,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355409518] [2025-01-10 01:04:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355409518] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860690058] [2025-01-10 01:04:21,312 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:21,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:21,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:21,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 01:04:21,355 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:21,373 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:21,373 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:21,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:21,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:04:21,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:21,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:21,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860690058] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:21,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:21,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 01:04:21,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039897615] [2025-01-10 01:04:21,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:21,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:04:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:21,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:04:21,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:04:21,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:21,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 101 transitions, 1288 flow. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:21,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:21,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:21,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:22,054 INFO L124 PetriNetUnfolderBase]: 990/1430 cut-off events. [2025-01-10 01:04:22,054 INFO L125 PetriNetUnfolderBase]: For 12279/12279 co-relation queries the response was YES. [2025-01-10 01:04:22,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9006 conditions, 1430 events. 990/1430 cut-off events. For 12279/12279 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5583 event pairs, 78 based on Foata normal form. 80/1510 useless extension candidates. Maximal degree in co-relation 8074. Up to 705 conditions per place. [2025-01-10 01:04:22,068 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 80 selfloop transitions, 94 changer transitions 4/179 dead transitions. [2025-01-10 01:04:22,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 179 transitions, 2359 flow [2025-01-10 01:04:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 01:04:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 01:04:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2025-01-10 01:04:22,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2025-01-10 01:04:22,070 INFO L175 Difference]: Start difference. First operand has 70 places, 101 transitions, 1288 flow. Second operand 12 states and 164 transitions. [2025-01-10 01:04:22,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 179 transitions, 2359 flow [2025-01-10 01:04:22,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 179 transitions, 1934 flow, removed 175 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:22,103 INFO L231 Difference]: Finished difference. Result has 82 places, 126 transitions, 1584 flow [2025-01-10 01:04:22,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1584, PETRI_PLACES=82, PETRI_TRANSITIONS=126} [2025-01-10 01:04:22,104 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2025-01-10 01:04:22,104 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 126 transitions, 1584 flow [2025-01-10 01:04:22,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:22,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:22,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:22,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 01:04:22,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:22,309 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)] === [2025-01-10 01:04:22,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:22,310 INFO L85 PathProgramCache]: Analyzing trace with hash 281022997, now seen corresponding path program 1 times [2025-01-10 01:04:22,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:22,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339499943] [2025-01-10 01:04:22,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:22,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:22,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 01:04:22,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:22,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:22,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:22,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:22,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339499943] [2025-01-10 01:04:22,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339499943] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:22,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685501655] [2025-01-10 01:04:22,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:22,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:22,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:22,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:22,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 01:04:22,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 01:04:22,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:22,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:22,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:22,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 01:04:22,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:22,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:23,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685501655] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:23,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:23,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2025-01-10 01:04:23,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666083088] [2025-01-10 01:04:23,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:23,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:04:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:23,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:04:23,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:04:23,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:23,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 126 transitions, 1584 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2025-01-10 01:04:23,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:23,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:23,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:23,827 INFO L124 PetriNetUnfolderBase]: 1411/2031 cut-off events. [2025-01-10 01:04:23,827 INFO L125 PetriNetUnfolderBase]: For 13484/13484 co-relation queries the response was YES. [2025-01-10 01:04:23,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 2031 events. 1411/2031 cut-off events. For 13484/13484 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8043 event pairs, 160 based on Foata normal form. 2/2033 useless extension candidates. Maximal degree in co-relation 10974. Up to 1460 conditions per place. [2025-01-10 01:04:23,854 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 152 selfloop transitions, 58 changer transitions 2/213 dead transitions. [2025-01-10 01:04:23,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 213 transitions, 2668 flow [2025-01-10 01:04:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:04:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:04:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2025-01-10 01:04:23,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2025-01-10 01:04:23,856 INFO L175 Difference]: Start difference. First operand has 82 places, 126 transitions, 1584 flow. Second operand 9 states and 143 transitions. [2025-01-10 01:04:23,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 213 transitions, 2668 flow [2025-01-10 01:04:23,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 213 transitions, 2334 flow, removed 36 selfloop flow, removed 10 redundant places. [2025-01-10 01:04:23,939 INFO L231 Difference]: Finished difference. Result has 81 places, 158 transitions, 1872 flow [2025-01-10 01:04:23,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1872, PETRI_PLACES=81, PETRI_TRANSITIONS=158} [2025-01-10 01:04:23,940 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2025-01-10 01:04:23,940 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 158 transitions, 1872 flow [2025-01-10 01:04:23,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2025-01-10 01:04:23,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:23,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:23,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 01:04:24,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 01:04:24,146 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:24,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 670478383, now seen corresponding path program 2 times [2025-01-10 01:04:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:24,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678195656] [2025-01-10 01:04:24,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:24,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:24,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:24,165 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:24,165 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:24,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:24,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:24,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678195656] [2025-01-10 01:04:24,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678195656] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:24,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150760242] [2025-01-10 01:04:24,364 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:24,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:24,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:24,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:24,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 01:04:24,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:24,430 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:24,431 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:24,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:24,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 01:04:24,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:24,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150760242] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:25,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:25,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2025-01-10 01:04:25,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722025937] [2025-01-10 01:04:25,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:25,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:04:25,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:25,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:04:25,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:04:25,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:25,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 158 transitions, 1872 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2025-01-10 01:04:25,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:25,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:25,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:25,529 INFO L124 PetriNetUnfolderBase]: 1707/2463 cut-off events. [2025-01-10 01:04:25,530 INFO L125 PetriNetUnfolderBase]: For 15683/15683 co-relation queries the response was YES. [2025-01-10 01:04:25,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14183 conditions, 2463 events. 1707/2463 cut-off events. For 15683/15683 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10082 event pairs, 277 based on Foata normal form. 2/2465 useless extension candidates. Maximal degree in co-relation 13608. Up to 1895 conditions per place. [2025-01-10 01:04:25,552 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 165 selfloop transitions, 61 changer transitions 2/229 dead transitions. [2025-01-10 01:04:25,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 229 transitions, 2829 flow [2025-01-10 01:04:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:04:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:04:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-01-10 01:04:25,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2025-01-10 01:04:25,554 INFO L175 Difference]: Start difference. First operand has 81 places, 158 transitions, 1872 flow. Second operand 9 states and 140 transitions. [2025-01-10 01:04:25,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 229 transitions, 2829 flow [2025-01-10 01:04:25,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 229 transitions, 2645 flow, removed 79 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:25,613 INFO L231 Difference]: Finished difference. Result has 91 places, 177 transitions, 2129 flow [2025-01-10 01:04:25,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2129, PETRI_PLACES=91, PETRI_TRANSITIONS=177} [2025-01-10 01:04:25,614 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2025-01-10 01:04:25,614 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 177 transitions, 2129 flow [2025-01-10 01:04:25,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2025-01-10 01:04:25,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:25,615 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:25,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 01:04:25,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 01:04:25,816 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:25,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash -121642825, now seen corresponding path program 3 times [2025-01-10 01:04:25,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:25,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146991461] [2025-01-10 01:04:25,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:25,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:25,824 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:25,836 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:25,837 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:25,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:26,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:26,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146991461] [2025-01-10 01:04:26,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146991461] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:26,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489411308] [2025-01-10 01:04:26,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:26,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:26,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:26,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:26,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 01:04:26,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:26,081 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:26,081 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:26,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:26,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 01:04:26,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:26,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:26,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489411308] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:26,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:26,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2025-01-10 01:04:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199148391] [2025-01-10 01:04:26,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:26,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:04:26,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:26,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:04:26,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:04:26,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:26,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 177 transitions, 2129 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2025-01-10 01:04:26,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:26,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:26,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:27,367 INFO L124 PetriNetUnfolderBase]: 2132/3081 cut-off events. [2025-01-10 01:04:27,367 INFO L125 PetriNetUnfolderBase]: For 21074/21074 co-relation queries the response was YES. [2025-01-10 01:04:27,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17810 conditions, 3081 events. 2132/3081 cut-off events. For 21074/21074 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13188 event pairs, 428 based on Foata normal form. 2/3083 useless extension candidates. Maximal degree in co-relation 17381. Up to 2537 conditions per place. [2025-01-10 01:04:27,399 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 200 selfloop transitions, 59 changer transitions 2/262 dead transitions. [2025-01-10 01:04:27,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 262 transitions, 3388 flow [2025-01-10 01:04:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:04:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:04:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-01-10 01:04:27,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2025-01-10 01:04:27,401 INFO L175 Difference]: Start difference. First operand has 91 places, 177 transitions, 2129 flow. Second operand 9 states and 140 transitions. [2025-01-10 01:04:27,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 262 transitions, 3388 flow [2025-01-10 01:04:27,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 262 transitions, 3179 flow, removed 79 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:27,485 INFO L231 Difference]: Finished difference. Result has 100 places, 210 transitions, 2615 flow [2025-01-10 01:04:27,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1920, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2615, PETRI_PLACES=100, PETRI_TRANSITIONS=210} [2025-01-10 01:04:27,487 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2025-01-10 01:04:27,488 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 210 transitions, 2615 flow [2025-01-10 01:04:27,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2025-01-10 01:04:27,488 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:27,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:27,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:27,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-10 01:04:27,689 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:27,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:27,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1818216265, now seen corresponding path program 4 times [2025-01-10 01:04:27,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:27,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458581886] [2025-01-10 01:04:27,690 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:27,697 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:27,705 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:27,706 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:27,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:27,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458581886] [2025-01-10 01:04:27,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458581886] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861486783] [2025-01-10 01:04:27,933 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:27,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:27,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:27,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:27,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 01:04:27,979 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:28,001 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:28,001 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:28,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:28,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 01:04:28,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:28,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861486783] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:28,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:28,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-01-10 01:04:28,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220662473] [2025-01-10 01:04:28,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:28,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:04:28,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:28,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:04:28,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:04:28,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:28,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 210 transitions, 2615 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:28,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:28,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:28,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:29,286 INFO L124 PetriNetUnfolderBase]: 2412/3489 cut-off events. [2025-01-10 01:04:29,287 INFO L125 PetriNetUnfolderBase]: For 24956/24956 co-relation queries the response was YES. [2025-01-10 01:04:29,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20360 conditions, 3489 events. 2412/3489 cut-off events. For 24956/24956 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15347 event pairs, 542 based on Foata normal form. 2/3491 useless extension candidates. Maximal degree in co-relation 19900. Up to 2968 conditions per place. [2025-01-10 01:04:29,312 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 212 selfloop transitions, 62 changer transitions 2/277 dead transitions. [2025-01-10 01:04:29,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 277 transitions, 3742 flow [2025-01-10 01:04:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:04:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:04:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2025-01-10 01:04:29,313 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2025-01-10 01:04:29,313 INFO L175 Difference]: Start difference. First operand has 100 places, 210 transitions, 2615 flow. Second operand 9 states and 136 transitions. [2025-01-10 01:04:29,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 277 transitions, 3742 flow [2025-01-10 01:04:29,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 277 transitions, 3484 flow, removed 116 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:29,393 INFO L231 Difference]: Finished difference. Result has 110 places, 229 transitions, 2865 flow [2025-01-10 01:04:29,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2865, PETRI_PLACES=110, PETRI_TRANSITIONS=229} [2025-01-10 01:04:29,394 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2025-01-10 01:04:29,394 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 229 transitions, 2865 flow [2025-01-10 01:04:29,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:29,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:29,395 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:29,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 01:04:29,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:29,596 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:29,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash 139741875, now seen corresponding path program 5 times [2025-01-10 01:04:29,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:29,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717506543] [2025-01-10 01:04:29,596 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:29,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:29,602 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:29,610 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:29,610 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:29,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:29,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:29,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717506543] [2025-01-10 01:04:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717506543] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476113252] [2025-01-10 01:04:29,770 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:29,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:29,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:29,772 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:29,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 01:04:29,807 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:29,829 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:29,830 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:29,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:29,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 01:04:29,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:29,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:31,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476113252] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:31,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:31,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2025-01-10 01:04:31,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596859953] [2025-01-10 01:04:31,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:31,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:04:31,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:31,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:04:31,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:04:31,172 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:31,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 229 transitions, 2865 flow. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 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) [2025-01-10 01:04:31,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:31,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:31,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:31,736 INFO L124 PetriNetUnfolderBase]: 2768/4002 cut-off events. [2025-01-10 01:04:31,736 INFO L125 PetriNetUnfolderBase]: For 29888/29888 co-relation queries the response was YES. [2025-01-10 01:04:31,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23311 conditions, 4002 events. 2768/4002 cut-off events. For 29888/29888 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18130 event pairs, 670 based on Foata normal form. 1/4003 useless extension candidates. Maximal degree in co-relation 22807. Up to 3541 conditions per place. [2025-01-10 01:04:31,774 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 242 selfloop transitions, 61 changer transitions 1/305 dead transitions. [2025-01-10 01:04:31,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 305 transitions, 4266 flow [2025-01-10 01:04:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:04:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:04:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2025-01-10 01:04:31,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2025-01-10 01:04:31,776 INFO L175 Difference]: Start difference. First operand has 110 places, 229 transitions, 2865 flow. Second operand 8 states and 119 transitions. [2025-01-10 01:04:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 305 transitions, 4266 flow [2025-01-10 01:04:31,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 305 transitions, 4004 flow, removed 105 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:31,878 INFO L231 Difference]: Finished difference. Result has 118 places, 264 transitions, 3383 flow [2025-01-10 01:04:31,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3383, PETRI_PLACES=118, PETRI_TRANSITIONS=264} [2025-01-10 01:04:31,880 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2025-01-10 01:04:31,880 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 264 transitions, 3383 flow [2025-01-10 01:04:31,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 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) [2025-01-10 01:04:31,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:31,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:31,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 01:04:32,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:32,085 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:32,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1492378291, now seen corresponding path program 6 times [2025-01-10 01:04:32,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:32,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669273683] [2025-01-10 01:04:32,086 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:04:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:32,091 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:32,097 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:32,097 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:04:32,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:32,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:32,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669273683] [2025-01-10 01:04:32,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669273683] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:32,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884659706] [2025-01-10 01:04:32,251 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:04:32,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:32,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:32,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:32,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 01:04:32,290 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:04:32,312 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:04:32,312 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:04:32,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:32,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 01:04:32,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:32,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:33,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884659706] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:33,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:33,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2025-01-10 01:04:33,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68557392] [2025-01-10 01:04:33,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:33,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:04:33,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:33,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:04:33,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:04:33,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:33,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 264 transitions, 3383 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2025-01-10 01:04:33,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:33,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:33,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:34,362 INFO L124 PetriNetUnfolderBase]: 3048/4410 cut-off events. [2025-01-10 01:04:34,362 INFO L125 PetriNetUnfolderBase]: For 34344/34344 co-relation queries the response was YES. [2025-01-10 01:04:34,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25996 conditions, 4410 events. 3048/4410 cut-off events. For 34344/34344 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 20329 event pairs, 769 based on Foata normal form. 2/4412 useless extension candidates. Maximal degree in co-relation 25471. Up to 3912 conditions per place. [2025-01-10 01:04:34,390 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 263 selfloop transitions, 64 changer transitions 2/330 dead transitions. [2025-01-10 01:04:34,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 330 transitions, 4712 flow [2025-01-10 01:04:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:04:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:04:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2025-01-10 01:04:34,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.551440329218107 [2025-01-10 01:04:34,391 INFO L175 Difference]: Start difference. First operand has 118 places, 264 transitions, 3383 flow. Second operand 9 states and 134 transitions. [2025-01-10 01:04:34,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 330 transitions, 4712 flow [2025-01-10 01:04:34,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 330 transitions, 4406 flow, removed 140 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:34,509 INFO L231 Difference]: Finished difference. Result has 128 places, 283 transitions, 3660 flow [2025-01-10 01:04:34,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3660, PETRI_PLACES=128, PETRI_TRANSITIONS=283} [2025-01-10 01:04:34,511 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2025-01-10 01:04:34,511 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 283 transitions, 3660 flow [2025-01-10 01:04:34,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2025-01-10 01:04:34,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:34,511 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:34,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:34,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:34,712 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:34,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1491528137, now seen corresponding path program 7 times [2025-01-10 01:04:34,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:34,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570515490] [2025-01-10 01:04:34,713 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:04:34,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:34,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 01:04:34,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:34,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:34,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:34,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570515490] [2025-01-10 01:04:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570515490] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813543658] [2025-01-10 01:04:34,821 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:04:34,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:34,823 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:34,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 01:04:34,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 01:04:34,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:34,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:34,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:34,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:04:34,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:34,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:34,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813543658] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:34,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:34,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-10 01:04:34,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697080699] [2025-01-10 01:04:34,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:34,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:04:34,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:34,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:04:34,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:04:34,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:34,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 283 transitions, 3660 flow. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:34,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:34,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:34,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:36,169 INFO L124 PetriNetUnfolderBase]: 4613/6557 cut-off events. [2025-01-10 01:04:36,170 INFO L125 PetriNetUnfolderBase]: For 57162/57162 co-relation queries the response was YES. [2025-01-10 01:04:36,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38035 conditions, 6557 events. 4613/6557 cut-off events. For 57162/57162 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 31086 event pairs, 436 based on Foata normal form. 41/6598 useless extension candidates. Maximal degree in co-relation 36952. Up to 2111 conditions per place. [2025-01-10 01:04:36,212 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 515 selfloop transitions, 134 changer transitions 0/650 dead transitions. [2025-01-10 01:04:36,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 650 transitions, 9275 flow [2025-01-10 01:04:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 01:04:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 01:04:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2025-01-10 01:04:36,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2025-01-10 01:04:36,214 INFO L175 Difference]: Start difference. First operand has 128 places, 283 transitions, 3660 flow. Second operand 13 states and 204 transitions. [2025-01-10 01:04:36,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 650 transitions, 9275 flow [2025-01-10 01:04:36,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 650 transitions, 8408 flow, removed 407 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:36,358 INFO L231 Difference]: Finished difference. Result has 145 places, 349 transitions, 4512 flow [2025-01-10 01:04:36,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4512, PETRI_PLACES=145, PETRI_TRANSITIONS=349} [2025-01-10 01:04:36,359 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2025-01-10 01:04:36,359 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 349 transitions, 4512 flow [2025-01-10 01:04:36,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:36,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:36,361 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:36,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 01:04:36,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-10 01:04:36,562 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:36,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2031311742, now seen corresponding path program 8 times [2025-01-10 01:04:36,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:36,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105742607] [2025-01-10 01:04:36,563 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:36,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:36,568 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:04:36,573 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:36,573 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:36,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105742607] [2025-01-10 01:04:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105742607] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599074938] [2025-01-10 01:04:36,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:36,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:36,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:36,659 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:36,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 01:04:36,694 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:04:36,710 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:36,711 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:36,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:36,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:04:36,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:36,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599074938] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:36,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:36,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-10 01:04:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651530582] [2025-01-10 01:04:36,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:36,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:04:36,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:36,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:04:36,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:04:36,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:36,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 349 transitions, 4512 flow. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:36,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:36,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:36,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:38,237 INFO L124 PetriNetUnfolderBase]: 6612/9219 cut-off events. [2025-01-10 01:04:38,237 INFO L125 PetriNetUnfolderBase]: For 102419/102419 co-relation queries the response was YES. [2025-01-10 01:04:38,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63751 conditions, 9219 events. 6612/9219 cut-off events. For 102419/102419 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 43923 event pairs, 746 based on Foata normal form. 166/9385 useless extension candidates. Maximal degree in co-relation 61980. Up to 3683 conditions per place. [2025-01-10 01:04:38,326 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 692 selfloop transitions, 231 changer transitions 0/924 dead transitions. [2025-01-10 01:04:38,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 924 transitions, 14114 flow [2025-01-10 01:04:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-10 01:04:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-01-10 01:04:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 318 transitions. [2025-01-10 01:04:38,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2025-01-10 01:04:38,328 INFO L175 Difference]: Start difference. First operand has 145 places, 349 transitions, 4512 flow. Second operand 23 states and 318 transitions. [2025-01-10 01:04:38,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 924 transitions, 14114 flow [2025-01-10 01:04:38,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 924 transitions, 13181 flow, removed 386 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:38,801 INFO L231 Difference]: Finished difference. Result has 176 places, 507 transitions, 7608 flow [2025-01-10 01:04:38,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4222, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7608, PETRI_PLACES=176, PETRI_TRANSITIONS=507} [2025-01-10 01:04:38,802 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2025-01-10 01:04:38,802 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 507 transitions, 7608 flow [2025-01-10 01:04:38,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:38,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:38,802 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:38,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:39,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 01:04:39,003 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:39,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1813066497, now seen corresponding path program 9 times [2025-01-10 01:04:39,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:39,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484815017] [2025-01-10 01:04:39,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:39,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:39,007 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:04:39,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:39,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:39,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:39,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:39,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484815017] [2025-01-10 01:04:39,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484815017] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:39,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300648228] [2025-01-10 01:04:39,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:39,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:39,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:39,111 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:39,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 01:04:39,146 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:04:39,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:39,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:39,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:39,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:04:39,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:39,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:39,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300648228] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:39,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:39,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-10 01:04:39,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32276950] [2025-01-10 01:04:39,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:39,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:04:39,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:39,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:04:39,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:04:39,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:39,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 507 transitions, 7608 flow. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:39,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:39,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:39,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:40,779 INFO L124 PetriNetUnfolderBase]: 7009/9875 cut-off events. [2025-01-10 01:04:40,780 INFO L125 PetriNetUnfolderBase]: For 171983/171983 co-relation queries the response was YES. [2025-01-10 01:04:40,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77704 conditions, 9875 events. 7009/9875 cut-off events. For 171983/171983 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 49412 event pairs, 1496 based on Foata normal form. 197/10072 useless extension candidates. Maximal degree in co-relation 75528. Up to 5343 conditions per place. [2025-01-10 01:04:40,867 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 655 selfloop transitions, 153 changer transitions 64/873 dead transitions. [2025-01-10 01:04:40,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 873 transitions, 16313 flow [2025-01-10 01:04:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:04:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:04:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2025-01-10 01:04:40,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2025-01-10 01:04:40,869 INFO L175 Difference]: Start difference. First operand has 176 places, 507 transitions, 7608 flow. Second operand 8 states and 123 transitions. [2025-01-10 01:04:40,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 873 transitions, 16313 flow [2025-01-10 01:04:42,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 873 transitions, 13409 flow, removed 1452 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:42,026 INFO L231 Difference]: Finished difference. Result has 187 places, 575 transitions, 8387 flow [2025-01-10 01:04:42,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6634, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8387, PETRI_PLACES=187, PETRI_TRANSITIONS=575} [2025-01-10 01:04:42,027 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2025-01-10 01:04:42,027 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 575 transitions, 8387 flow [2025-01-10 01:04:42,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:42,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:42,027 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:42,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:42,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 01:04:42,230 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:42,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:42,230 INFO L85 PathProgramCache]: Analyzing trace with hash -415645240, now seen corresponding path program 10 times [2025-01-10 01:04:42,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14364352] [2025-01-10 01:04:42,230 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:42,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:42,234 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:04:42,241 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:42,241 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:42,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:42,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:42,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14364352] [2025-01-10 01:04:42,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14364352] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:42,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773072955] [2025-01-10 01:04:42,354 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:42,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:42,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:42,357 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:42,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 01:04:42,393 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:04:42,411 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:42,411 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:42,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:42,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:04:42,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:42,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:42,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773072955] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:42,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:42,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2025-01-10 01:04:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566488453] [2025-01-10 01:04:42,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:42,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 01:04:42,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:42,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 01:04:42,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2025-01-10 01:04:42,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:42,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 575 transitions, 8387 flow. Second operand has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 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) [2025-01-10 01:04:42,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:42,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:42,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:46,934 INFO L124 PetriNetUnfolderBase]: 11934/16361 cut-off events. [2025-01-10 01:04:46,934 INFO L125 PetriNetUnfolderBase]: For 261273/261273 co-relation queries the response was YES. [2025-01-10 01:04:47,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125640 conditions, 16361 events. 11934/16361 cut-off events. For 261273/261273 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 83198 event pairs, 899 based on Foata normal form. 452/16813 useless extension candidates. Maximal degree in co-relation 123468. Up to 5395 conditions per place. [2025-01-10 01:04:47,102 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 989 selfloop transitions, 841 changer transitions 14/1845 dead transitions. [2025-01-10 01:04:47,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1845 transitions, 31603 flow [2025-01-10 01:04:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-10 01:04:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2025-01-10 01:04:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 817 transitions. [2025-01-10 01:04:47,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47280092592592593 [2025-01-10 01:04:47,105 INFO L175 Difference]: Start difference. First operand has 187 places, 575 transitions, 8387 flow. Second operand 64 states and 817 transitions. [2025-01-10 01:04:47,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 1845 transitions, 31603 flow [2025-01-10 01:04:49,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 1845 transitions, 30880 flow, removed 278 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:49,469 INFO L231 Difference]: Finished difference. Result has 284 places, 1230 transitions, 21142 flow [2025-01-10 01:04:49,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8217, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=21142, PETRI_PLACES=284, PETRI_TRANSITIONS=1230} [2025-01-10 01:04:49,470 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2025-01-10 01:04:49,470 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 1230 transitions, 21142 flow [2025-01-10 01:04:49,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 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) [2025-01-10 01:04:49,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:49,470 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:49,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 01:04:49,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:49,671 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:49,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:49,671 INFO L85 PathProgramCache]: Analyzing trace with hash -779877155, now seen corresponding path program 11 times [2025-01-10 01:04:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:49,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531231269] [2025-01-10 01:04:49,672 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:49,676 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:04:49,688 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:49,688 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:49,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:49,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:49,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531231269] [2025-01-10 01:04:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531231269] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076677583] [2025-01-10 01:04:49,781 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:49,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:49,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:49,783 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:49,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 01:04:49,821 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:04:49,837 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:04:49,838 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:49,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:49,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:04:49,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:49,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:04:49,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076677583] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:49,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:49,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-01-10 01:04:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861728872] [2025-01-10 01:04:49,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:49,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 01:04:49,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:49,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 01:04:49,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2025-01-10 01:04:49,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:49,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 1230 transitions, 21142 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:49,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:49,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:49,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:56,045 INFO L124 PetriNetUnfolderBase]: 14667/20150 cut-off events. [2025-01-10 01:04:56,045 INFO L125 PetriNetUnfolderBase]: For 880963/880963 co-relation queries the response was YES. [2025-01-10 01:04:56,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208734 conditions, 20150 events. 14667/20150 cut-off events. For 880963/880963 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 107310 event pairs, 1682 based on Foata normal form. 638/20788 useless extension candidates. Maximal degree in co-relation 206079. Up to 8098 conditions per place. [2025-01-10 01:04:56,342 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1150 selfloop transitions, 1226 changer transitions 156/2533 dead transitions. [2025-01-10 01:04:56,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 2533 transitions, 51635 flow [2025-01-10 01:04:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-01-10 01:04:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2025-01-10 01:04:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 907 transitions. [2025-01-10 01:04:56,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4420077972709552 [2025-01-10 01:04:56,345 INFO L175 Difference]: Start difference. First operand has 284 places, 1230 transitions, 21142 flow. Second operand 76 states and 907 transitions. [2025-01-10 01:04:56,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 2533 transitions, 51635 flow [2025-01-10 01:05:02,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 2533 transitions, 47463 flow, removed 1742 selfloop flow, removed 5 redundant places. [2025-01-10 01:05:02,738 INFO L231 Difference]: Finished difference. Result has 380 places, 1909 transitions, 37664 flow [2025-01-10 01:05:02,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=18320, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=37664, PETRI_PLACES=380, PETRI_TRANSITIONS=1909} [2025-01-10 01:05:02,739 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2025-01-10 01:05:02,739 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 1909 transitions, 37664 flow [2025-01-10 01:05:02,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:02,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:02,739 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:02,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-10 01:05:02,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:02,940 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:05:02,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:02,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1192098120, now seen corresponding path program 12 times [2025-01-10 01:05:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698657509] [2025-01-10 01:05:02,941 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:05:02,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:02,945 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:05:02,950 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:05:02,950 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:05:02,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:05:03,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698657509] [2025-01-10 01:05:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698657509] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857413646] [2025-01-10 01:05:03,034 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:05:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:03,036 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:03,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 01:05:03,116 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:05:03,129 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:05:03,129 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:05:03,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:03,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:05:03,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:05:03,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:05:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:05:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857413646] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:05:03,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:05:03,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-10 01:05:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120355580] [2025-01-10 01:05:03,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:05:03,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:05:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:03,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:05:03,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:05:03,250 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:05:03,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1909 transitions, 37664 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2025-01-10 01:05:03,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:03,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:05:03,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:09,854 INFO L124 PetriNetUnfolderBase]: 14437/20018 cut-off events. [2025-01-10 01:05:09,855 INFO L125 PetriNetUnfolderBase]: For 904088/904088 co-relation queries the response was YES. [2025-01-10 01:05:09,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215680 conditions, 20018 events. 14437/20018 cut-off events. For 904088/904088 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 109148 event pairs, 2388 based on Foata normal form. 336/20354 useless extension candidates. Maximal degree in co-relation 214591. Up to 12266 conditions per place. [2025-01-10 01:05:10,090 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 1589 selfloop transitions, 375 changer transitions 84/2049 dead transitions. [2025-01-10 01:05:10,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2049 transitions, 44377 flow [2025-01-10 01:05:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:05:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:05:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2025-01-10 01:05:10,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-10 01:05:10,091 INFO L175 Difference]: Start difference. First operand has 380 places, 1909 transitions, 37664 flow. Second operand 8 states and 126 transitions. [2025-01-10 01:05:10,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2049 transitions, 44377 flow [2025-01-10 01:05:32,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 2049 transitions, 35828 flow, removed 4225 selfloop flow, removed 5 redundant places. [2025-01-10 01:05:33,004 INFO L231 Difference]: Finished difference. Result has 379 places, 1877 transitions, 29866 flow [2025-01-10 01:05:33,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=29177, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29866, PETRI_PLACES=379, PETRI_TRANSITIONS=1877} [2025-01-10 01:05:33,006 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2025-01-10 01:05:33,006 INFO L471 AbstractCegarLoop]: Abstraction has has 379 places, 1877 transitions, 29866 flow [2025-01-10 01:05:33,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2025-01-10 01:05:33,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:33,006 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:33,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 01:05:33,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:33,207 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:05:33,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2120614696, now seen corresponding path program 13 times [2025-01-10 01:05:33,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:33,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916012682] [2025-01-10 01:05:33,207 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:05:33,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:33,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 01:05:33,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:05:33,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:33,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:05:33,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:33,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916012682] [2025-01-10 01:05:33,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916012682] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:33,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665698469] [2025-01-10 01:05:33,339 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:05:33,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:33,341 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:33,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 01:05:33,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 01:05:33,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:05:33,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:33,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:33,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:05:33,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:05:33,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:05:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:05:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665698469] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:05:33,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:05:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-01-10 01:05:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22430598] [2025-01-10 01:05:33,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:05:33,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 01:05:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:33,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 01:05:33,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-01-10 01:05:33,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:05:33,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 1877 transitions, 29866 flow. Second operand has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:33,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:33,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:05:33,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:40,179 INFO L124 PetriNetUnfolderBase]: 16232/22405 cut-off events. [2025-01-10 01:05:40,179 INFO L125 PetriNetUnfolderBase]: For 555817/555817 co-relation queries the response was YES. [2025-01-10 01:05:40,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203038 conditions, 22405 events. 16232/22405 cut-off events. For 555817/555817 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 123433 event pairs, 2486 based on Foata normal form. 534/22937 useless extension candidates. Maximal degree in co-relation 202105. Up to 14806 conditions per place. [2025-01-10 01:05:40,939 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 1586 selfloop transitions, 875 changer transitions 41/2503 dead transitions. [2025-01-10 01:05:40,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 2503 transitions, 45438 flow [2025-01-10 01:05:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 01:05:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 01:05:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 194 transitions. [2025-01-10 01:05:40,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527065527065527 [2025-01-10 01:05:40,940 INFO L175 Difference]: Start difference. First operand has 379 places, 1877 transitions, 29866 flow. Second operand 13 states and 194 transitions. [2025-01-10 01:05:40,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 2503 transitions, 45438 flow