./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:18:30,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:18:30,304 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:18:30,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:18:30,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:18:30,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:18:30,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:18:30,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:18:30,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:18:30,327 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:18:30,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:18:30,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:18:30,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:18:30,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:18:30,328 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:18:30,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:18:30,328 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:18:30,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:18:30,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:18:30,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:18:30,329 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:18:30,329 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:18:30,329 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:18:30,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:18:30,329 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:18:30,329 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:18:30,329 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:18:30,329 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:18:30,330 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:18:30,330 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:18:30,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:18:30,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:18:30,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:18:30,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:18:30,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:18:30,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:18:30,331 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:18:30,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:18:30,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:18:30,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:18:30,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:18:30,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:18:30,331 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/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 -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2025-03-09 01:18:30,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:18:30,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:18:30,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:18:30,517 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:18:30,518 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:18:30,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2025-03-09 01:18:31,596 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f9f530c/484ce3b8483e4df8b53036c50b11b5cf/FLAG84b7e2eb5 [2025-03-09 01:18:31,794 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:18:31,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2025-03-09 01:18:31,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f9f530c/484ce3b8483e4df8b53036c50b11b5cf/FLAG84b7e2eb5 [2025-03-09 01:18:32,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f9f530c/484ce3b8483e4df8b53036c50b11b5cf [2025-03-09 01:18:32,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:18:32,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:18:32,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:18:32,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:18:32,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:18:32,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b84acf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32, skipping insertion in model container [2025-03-09 01:18:32,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:18:32,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:18:32,313 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:18:32,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:18:32,345 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:18:32,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32 WrapperNode [2025-03-09 01:18:32,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:18:32,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:18:32,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:18:32,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:18:32,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,377 INFO L138 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2025-03-09 01:18:32,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:18:32,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:18:32,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:18:32,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:18:32,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,404 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]. [2025-03-09 01:18:32,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,410 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:18:32,418 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:18:32,421 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:18:32,422 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:18:32,422 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (1/1) ... [2025-03-09 01:18:32,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:18:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:18:32,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 01:18:32,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 01:18:32,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:18:32,468 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:18:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:18:32,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:18:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:18:32,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 01:18:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 01:18:32,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-09 01:18:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-09 01:18:32,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:18:32,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-03-09 01:18:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-03-09 01:18:32,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-03-09 01:18:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-03-09 01:18:32,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:18:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:18:32,470 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:18:32,551 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:18:32,552 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:18:32,722 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:18:32,723 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:18:32,843 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:18:32,844 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:18:32,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:18:32 BoogieIcfgContainer [2025-03-09 01:18:32,844 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:18:32,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:18:32,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:18:32,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:18:32,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:18:32" (1/3) ... [2025-03-09 01:18:32,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4321c058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:18:32, skipping insertion in model container [2025-03-09 01:18:32,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:18:32" (2/3) ... [2025-03-09 01:18:32,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4321c058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:18:32, skipping insertion in model container [2025-03-09 01:18:32,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:18:32" (3/3) ... [2025-03-09 01:18:32,851 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2025-03-09 01:18:32,865 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:18:32,867 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp3x3.wvr.c that has 7 procedures, 43 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-03-09 01:18:32,867 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:18:32,923 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-03-09 01:18:32,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 138 flow [2025-03-09 01:18:32,985 INFO L124 PetriNetUnfolderBase]: 6/42 cut-off events. [2025-03-09 01:18:32,988 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-09 01:18:32,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 42 events. 6/42 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-09 01:18:32,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 138 flow [2025-03-09 01:18:32,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 118 flow [2025-03-09 01:18:33,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:18:33,013 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;@29c591fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:18:33,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-09 01:18:33,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:18:33,029 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2025-03-09 01:18:33,029 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-09 01:18:33,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:33,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:33,030 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:33,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:33,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1871092833, now seen corresponding path program 1 times [2025-03-09 01:18:33,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:33,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084312138] [2025-03-09 01:18:33,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:33,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 01:18:33,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:18:33,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:33,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:33,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:33,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084312138] [2025-03-09 01:18:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084312138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:18:33,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:18:33,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:18:33,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814711789] [2025-03-09 01:18:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:18:33,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:18:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:33,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:18:33,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:18:33,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:33,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2025-03-09 01:18:33,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:33,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:33,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:34,852 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2025-03-09 01:18:34,853 INFO L125 PetriNetUnfolderBase]: For 1449/1449 co-relation queries the response was YES. [2025-03-09 01:18:34,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44837 conditions, 21812 events. 18895/21812 cut-off events. For 1449/1449 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 69876 event pairs, 1570 based on Foata normal form. 2/11961 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2025-03-09 01:18:34,978 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2025-03-09 01:18:34,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2025-03-09 01:18:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:18:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:18:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-03-09 01:18:34,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-09 01:18:34,993 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 118 flow. Second operand 3 states and 105 transitions. [2025-03-09 01:18:34,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2025-03-09 01:18:35,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-03-09 01:18:35,016 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2025-03-09 01:18:35,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2025-03-09 01:18:35,021 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2025-03-09 01:18:35,021 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2025-03-09 01:18:35,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2025-03-09 01:18:35,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:35,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:35,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:18:35,022 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:35,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1129664402, now seen corresponding path program 1 times [2025-03-09 01:18:35,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:35,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999085182] [2025-03-09 01:18:35,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:35,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:35,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:35,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:35,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:35,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999085182] [2025-03-09 01:18:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999085182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:18:35,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:18:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:18:35,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350749575] [2025-03-09 01:18:35,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:18:35,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:18:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:35,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:18:35,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:18:35,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:35,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:35,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:35,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:35,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:36,541 INFO L124 PetriNetUnfolderBase]: 23791/27640 cut-off events. [2025-03-09 01:18:36,542 INFO L125 PetriNetUnfolderBase]: For 7879/7879 co-relation queries the response was YES. [2025-03-09 01:18:36,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68678 conditions, 27640 events. 23791/27640 cut-off events. For 7879/7879 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 96110 event pairs, 1822 based on Foata normal form. 390/28018 useless extension candidates. Maximal degree in co-relation 18865. Up to 12219 conditions per place. [2025-03-09 01:18:36,646 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 105 selfloop transitions, 10 changer transitions 0/122 dead transitions. [2025-03-09 01:18:36,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 122 transitions, 591 flow [2025-03-09 01:18:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-03-09 01:18:36,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-09 01:18:36,647 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 175 transitions. [2025-03-09 01:18:36,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 122 transitions, 591 flow [2025-03-09 01:18:36,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 122 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:18:36,650 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2025-03-09 01:18:36,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2025-03-09 01:18:36,651 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2025-03-09 01:18:36,651 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2025-03-09 01:18:36,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:36,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:36,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:36,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:18:36,651 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:36,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 535279118, now seen corresponding path program 1 times [2025-03-09 01:18:36,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:36,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214771352] [2025-03-09 01:18:36,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:36,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:36,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:36,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:36,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:36,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:36,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214771352] [2025-03-09 01:18:36,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214771352] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:18:36,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048951504] [2025-03-09 01:18:36,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:36,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:18:36,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:18:36,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:18:36,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 01:18:36,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:36,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:36,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:36,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:36,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:18:36,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:18:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:37,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:18:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:37,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048951504] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:18:37,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:18:37,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-03-09 01:18:37,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090983493] [2025-03-09 01:18:37,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:18:37,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:18:37,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:37,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:18:37,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:18:37,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:37,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2025-03-09 01:18:37,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:37,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:37,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:38,544 INFO L124 PetriNetUnfolderBase]: 26298/30881 cut-off events. [2025-03-09 01:18:38,545 INFO L125 PetriNetUnfolderBase]: For 19930/19930 co-relation queries the response was YES. [2025-03-09 01:18:38,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87260 conditions, 30881 events. 26298/30881 cut-off events. For 19930/19930 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 115541 event pairs, 5148 based on Foata normal form. 565/31403 useless extension candidates. Maximal degree in co-relation 34476. Up to 13880 conditions per place. [2025-03-09 01:18:38,729 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 109 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2025-03-09 01:18:38,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 126 transitions, 657 flow [2025-03-09 01:18:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:38,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2025-03-09 01:18:38,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2025-03-09 01:18:38,731 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 181 transitions. [2025-03-09 01:18:38,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 126 transitions, 657 flow [2025-03-09 01:18:38,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 126 transitions, 657 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:18:38,742 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 251 flow [2025-03-09 01:18:38,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2025-03-09 01:18:38,742 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2025-03-09 01:18:38,743 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 251 flow [2025-03-09 01:18:38,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2025-03-09 01:18:38,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:38,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:38,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 01:18:38,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:18:38,947 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:38,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash -52372087, now seen corresponding path program 1 times [2025-03-09 01:18:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:38,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208365787] [2025-03-09 01:18:38,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:38,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:38,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:38,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:38,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:38,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:39,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:39,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208365787] [2025-03-09 01:18:39,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208365787] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:18:39,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724333903] [2025-03-09 01:18:39,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:39,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:18:39,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:18:39,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:18:39,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 01:18:39,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:39,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:39,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:39,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:39,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:18:39,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:18:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:39,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:18:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:39,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724333903] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:18:39,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:18:39,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-03-09 01:18:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359511256] [2025-03-09 01:18:39,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:18:39,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:18:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:39,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:18:39,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:18:39,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:39,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2025-03-09 01:18:39,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:39,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:39,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:41,071 INFO L124 PetriNetUnfolderBase]: 35934/42874 cut-off events. [2025-03-09 01:18:41,072 INFO L125 PetriNetUnfolderBase]: For 61714/61725 co-relation queries the response was YES. [2025-03-09 01:18:41,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132493 conditions, 42874 events. 35934/42874 cut-off events. For 61714/61725 co-relation queries the response was YES. Maximal size of possible extension queue 1516. Compared 177196 event pairs, 5491 based on Foata normal form. 918/43732 useless extension candidates. Maximal degree in co-relation 81266. Up to 20794 conditions per place. [2025-03-09 01:18:41,270 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 134 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2025-03-09 01:18:41,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 149 transitions, 1014 flow [2025-03-09 01:18:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2025-03-09 01:18:41,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7125 [2025-03-09 01:18:41,273 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 251 flow. Second operand 5 states and 171 transitions. [2025-03-09 01:18:41,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 149 transitions, 1014 flow [2025-03-09 01:18:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 149 transitions, 982 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-03-09 01:18:41,298 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 295 flow [2025-03-09 01:18:41,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2025-03-09 01:18:41,299 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2025-03-09 01:18:41,299 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 295 flow [2025-03-09 01:18:41,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2025-03-09 01:18:41,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:41,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:41,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 01:18:41,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-09 01:18:41,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:41,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:41,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1920538969, now seen corresponding path program 2 times [2025-03-09 01:18:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:41,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650213499] [2025-03-09 01:18:41,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:18:41,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:41,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:18:41,517 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:41,517 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:18:41,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:41,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:41,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650213499] [2025-03-09 01:18:41,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650213499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:18:41,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:18:41,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:18:41,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748096624] [2025-03-09 01:18:41,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:18:41,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:18:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:41,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:18:41,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:18:41,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:41,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:41,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:41,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:41,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:43,575 INFO L124 PetriNetUnfolderBase]: 31864/37792 cut-off events. [2025-03-09 01:18:43,575 INFO L125 PetriNetUnfolderBase]: For 64376/64384 co-relation queries the response was YES. [2025-03-09 01:18:43,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132606 conditions, 37792 events. 31864/37792 cut-off events. For 64376/64384 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 148566 event pairs, 2082 based on Foata normal form. 487/38247 useless extension candidates. Maximal degree in co-relation 82004. Up to 17071 conditions per place. [2025-03-09 01:18:43,756 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 138 selfloop transitions, 11 changer transitions 0/156 dead transitions. [2025-03-09 01:18:43,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 156 transitions, 1094 flow [2025-03-09 01:18:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2025-03-09 01:18:43,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-03-09 01:18:43,758 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 295 flow. Second operand 5 states and 168 transitions. [2025-03-09 01:18:43,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 156 transitions, 1094 flow [2025-03-09 01:18:43,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 156 transitions, 1094 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:18:43,897 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 356 flow [2025-03-09 01:18:43,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2025-03-09 01:18:43,898 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2025-03-09 01:18:43,898 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 356 flow [2025-03-09 01:18:43,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:43,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:43,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:43,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:18:43,899 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:43,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:43,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1971497880, now seen corresponding path program 1 times [2025-03-09 01:18:43,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:43,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663674572] [2025-03-09 01:18:43,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:43,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:43,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:43,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:43,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:44,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:44,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663674572] [2025-03-09 01:18:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663674572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:18:44,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:18:44,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:18:44,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523928087] [2025-03-09 01:18:44,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:18:44,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:18:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:44,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:18:44,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:18:44,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:44,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:44,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:44,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:44,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:45,657 INFO L124 PetriNetUnfolderBase]: 31348/37276 cut-off events. [2025-03-09 01:18:45,657 INFO L125 PetriNetUnfolderBase]: For 78051/78059 co-relation queries the response was YES. [2025-03-09 01:18:45,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138342 conditions, 37276 events. 31348/37276 cut-off events. For 78051/78059 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 148531 event pairs, 1675 based on Foata normal form. 517/37761 useless extension candidates. Maximal degree in co-relation 85587. Up to 16577 conditions per place. [2025-03-09 01:18:45,847 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 138 selfloop transitions, 8 changer transitions 0/153 dead transitions. [2025-03-09 01:18:45,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 153 transitions, 1103 flow [2025-03-09 01:18:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2025-03-09 01:18:45,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2025-03-09 01:18:45,848 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 356 flow. Second operand 5 states and 166 transitions. [2025-03-09 01:18:45,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 153 transitions, 1103 flow [2025-03-09 01:18:45,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 153 transitions, 1092 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-09 01:18:45,981 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 359 flow [2025-03-09 01:18:45,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2025-03-09 01:18:45,982 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2025-03-09 01:18:45,982 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 359 flow [2025-03-09 01:18:45,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:45,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:45,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:45,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:18:45,982 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:45,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash 892838813, now seen corresponding path program 1 times [2025-03-09 01:18:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748978157] [2025-03-09 01:18:45,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:45,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:45,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:45,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:45,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:46,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748978157] [2025-03-09 01:18:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748978157] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:18:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558821104] [2025-03-09 01:18:46,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:46,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:18:46,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:18:46,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:18:46,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 01:18:46,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:46,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:46,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:46,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:46,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:18:46,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:18:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:46,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:18:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:46,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558821104] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:18:46,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:18:46,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-03-09 01:18:46,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626024389] [2025-03-09 01:18:46,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:18:46,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:18:46,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:46,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:18:46,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:18:46,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:46,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2025-03-09 01:18:46,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:46,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:46,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:49,048 INFO L124 PetriNetUnfolderBase]: 41377/50304 cut-off events. [2025-03-09 01:18:49,048 INFO L125 PetriNetUnfolderBase]: For 143967/144047 co-relation queries the response was YES. [2025-03-09 01:18:49,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196217 conditions, 50304 events. 41377/50304 cut-off events. For 143967/144047 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 229023 event pairs, 6833 based on Foata normal form. 949/51195 useless extension candidates. Maximal degree in co-relation 119404. Up to 22583 conditions per place. [2025-03-09 01:18:49,333 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 160 selfloop transitions, 8 changer transitions 0/175 dead transitions. [2025-03-09 01:18:49,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 175 transitions, 1411 flow [2025-03-09 01:18:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-03-09 01:18:49,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2025-03-09 01:18:49,334 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 359 flow. Second operand 5 states and 161 transitions. [2025-03-09 01:18:49,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 175 transitions, 1411 flow [2025-03-09 01:18:49,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 175 transitions, 1376 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-03-09 01:18:49,378 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 403 flow [2025-03-09 01:18:49,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=403, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2025-03-09 01:18:49,379 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2025-03-09 01:18:49,379 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 403 flow [2025-03-09 01:18:49,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2025-03-09 01:18:49,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:49,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:49,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 01:18:49,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:18:49,580 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:49,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:49,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1101815431, now seen corresponding path program 2 times [2025-03-09 01:18:49,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:49,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375712621] [2025-03-09 01:18:49,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:18:49,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:49,585 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:18:49,590 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:49,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:18:49,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375712621] [2025-03-09 01:18:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375712621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:18:49,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:18:49,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:18:49,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971551898] [2025-03-09 01:18:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:18:49,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:18:49,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:49,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:18:49,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:18:49,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:49,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:49,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:49,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:49,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:52,227 INFO L124 PetriNetUnfolderBase]: 37126/44931 cut-off events. [2025-03-09 01:18:52,227 INFO L125 PetriNetUnfolderBase]: For 127399/127479 co-relation queries the response was YES. [2025-03-09 01:18:52,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191599 conditions, 44931 events. 37126/44931 cut-off events. For 127399/127479 co-relation queries the response was YES. Maximal size of possible extension queue 1698. Compared 195012 event pairs, 2551 based on Foata normal form. 478/45351 useless extension candidates. Maximal degree in co-relation 124512. Up to 20027 conditions per place. [2025-03-09 01:18:52,496 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 166 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2025-03-09 01:18:52,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 184 transitions, 1513 flow [2025-03-09 01:18:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-03-09 01:18:52,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 01:18:52,498 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 403 flow. Second operand 5 states and 160 transitions. [2025-03-09 01:18:52,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 184 transitions, 1513 flow [2025-03-09 01:18:52,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 184 transitions, 1513 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:18:52,901 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 464 flow [2025-03-09 01:18:52,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2025-03-09 01:18:52,901 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2025-03-09 01:18:52,901 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 464 flow [2025-03-09 01:18:52,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:52,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:52,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:52,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 01:18:52,902 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:52,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1409617014, now seen corresponding path program 1 times [2025-03-09 01:18:52,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:52,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009787265] [2025-03-09 01:18:52,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:18:52,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:52,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-09 01:18:52,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:52,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:18:52,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:52,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:52,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009787265] [2025-03-09 01:18:52,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009787265] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:18:52,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:18:52,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:18:52,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33017173] [2025-03-09 01:18:52,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:18:52,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:18:52,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:52,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:18:52,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:18:52,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:52,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:52,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:52,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:52,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:55,515 INFO L124 PetriNetUnfolderBase]: 36655/44460 cut-off events. [2025-03-09 01:18:55,515 INFO L125 PetriNetUnfolderBase]: For 140838/140918 co-relation queries the response was YES. [2025-03-09 01:18:55,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199309 conditions, 44460 events. 36655/44460 cut-off events. For 140838/140918 co-relation queries the response was YES. Maximal size of possible extension queue 1698. Compared 195179 event pairs, 2133 based on Foata normal form. 484/44886 useless extension candidates. Maximal degree in co-relation 129628. Up to 19855 conditions per place. [2025-03-09 01:18:55,836 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 166 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2025-03-09 01:18:55,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 181 transitions, 1522 flow [2025-03-09 01:18:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2025-03-09 01:18:55,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2025-03-09 01:18:55,837 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 464 flow. Second operand 5 states and 158 transitions. [2025-03-09 01:18:55,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 181 transitions, 1522 flow [2025-03-09 01:18:56,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 181 transitions, 1511 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-09 01:18:56,299 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 467 flow [2025-03-09 01:18:56,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2025-03-09 01:18:56,300 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2025-03-09 01:18:56,300 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 467 flow [2025-03-09 01:18:56,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:18:56,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:56,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:56,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 01:18:56,300 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:56,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash -224602796, now seen corresponding path program 2 times [2025-03-09 01:18:56,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:56,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542145363] [2025-03-09 01:18:56,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:18:56,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:56,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:18:56,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:56,312 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:18:56,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:56,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542145363] [2025-03-09 01:18:56,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542145363] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:18:56,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231457782] [2025-03-09 01:18:56,368 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:18:56,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:18:56,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:18:56,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:18:56,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 01:18:56,409 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:18:56,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:56,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:18:56,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:56,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:18:56,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:18:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:56,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:18:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:56,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231457782] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:18:56,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:18:56,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-03-09 01:18:56,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449745142] [2025-03-09 01:18:56,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:18:56,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:18:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:18:56,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:18:56,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:18:56,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:18:56,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2025-03-09 01:18:56,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:18:56,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:18:56,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:18:58,878 INFO L124 PetriNetUnfolderBase]: 35725/43698 cut-off events. [2025-03-09 01:18:58,878 INFO L125 PetriNetUnfolderBase]: For 143892/143972 co-relation queries the response was YES. [2025-03-09 01:18:58,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199833 conditions, 43698 events. 35725/43698 cut-off events. For 143892/143972 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 199710 event pairs, 6380 based on Foata normal form. 943/44583 useless extension candidates. Maximal degree in co-relation 129974. Up to 22702 conditions per place. [2025-03-09 01:18:59,129 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 160 selfloop transitions, 8 changer transitions 0/175 dead transitions. [2025-03-09 01:18:59,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 1483 flow [2025-03-09 01:18:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:18:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:18:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2025-03-09 01:18:59,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-09 01:18:59,130 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 467 flow. Second operand 5 states and 156 transitions. [2025-03-09 01:18:59,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 1483 flow [2025-03-09 01:18:59,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 175 transitions, 1470 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-09 01:18:59,569 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 507 flow [2025-03-09 01:18:59,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2025-03-09 01:18:59,569 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2025-03-09 01:18:59,569 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 507 flow [2025-03-09 01:18:59,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2025-03-09 01:18:59,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:18:59,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:18:59,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 01:18:59,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:18:59,770 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:18:59,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:18:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash -777110190, now seen corresponding path program 2 times [2025-03-09 01:18:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:18:59,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453740957] [2025-03-09 01:18:59,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:18:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:18:59,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:18:59,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:59,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:18:59,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:59,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:18:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453740957] [2025-03-09 01:18:59,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453740957] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:18:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188369416] [2025-03-09 01:18:59,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:18:59,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:18:59,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:18:59,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:18:59,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 01:18:59,857 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:18:59,875 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:18:59,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:18:59,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:18:59,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:18:59,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:18:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:18:59,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:19:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:19:00,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188369416] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:19:00,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:19:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-03-09 01:19:00,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124296532] [2025-03-09 01:19:00,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:19:00,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:19:00,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:19:00,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:19:00,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:19:00,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:19:00,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 507 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:19:00,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:19:00,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:19:00,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:19:02,467 INFO L124 PetriNetUnfolderBase]: 34557/42294 cut-off events. [2025-03-09 01:19:02,467 INFO L125 PetriNetUnfolderBase]: For 147882/148114 co-relation queries the response was YES. [2025-03-09 01:19:02,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201639 conditions, 42294 events. 34557/42294 cut-off events. For 147882/148114 co-relation queries the response was YES. Maximal size of possible extension queue 1559. Compared 194258 event pairs, 7001 based on Foata normal form. 1225/43473 useless extension candidates. Maximal degree in co-relation 181429. Up to 23412 conditions per place. [2025-03-09 01:19:02,866 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 180 selfloop transitions, 8 changer transitions 0/195 dead transitions. [2025-03-09 01:19:02,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 195 transitions, 1711 flow [2025-03-09 01:19:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:19:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:19:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2025-03-09 01:19:02,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-03-09 01:19:02,868 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 507 flow. Second operand 5 states and 164 transitions. [2025-03-09 01:19:02,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 195 transitions, 1711 flow [2025-03-09 01:19:03,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 195 transitions, 1649 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-03-09 01:19:03,275 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 538 flow [2025-03-09 01:19:03,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=538, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2025-03-09 01:19:03,276 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2025-03-09 01:19:03,276 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 538 flow [2025-03-09 01:19:03,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:19:03,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:19:03,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:19:03,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 01:19:03,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-09 01:19:03,476 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:19:03,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:19:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1113169984, now seen corresponding path program 2 times [2025-03-09 01:19:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:19:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18432831] [2025-03-09 01:19:03,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:19:03,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:19:03,481 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:19:03,490 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:19:03,490 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:19:03,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:19:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:19:03,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:19:03,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18432831] [2025-03-09 01:19:03,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18432831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:19:03,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:19:03,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:19:03,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313569544] [2025-03-09 01:19:03,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:19:03,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:19:03,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:19:03,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:19:03,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:19:03,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:19:03,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 538 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:19:03,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:19:03,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:19:03,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:19:05,532 INFO L124 PetriNetUnfolderBase]: 29565/35852 cut-off events. [2025-03-09 01:19:05,533 INFO L125 PetriNetUnfolderBase]: For 149142/149192 co-relation queries the response was YES. [2025-03-09 01:19:05,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175772 conditions, 35852 events. 29565/35852 cut-off events. For 149142/149192 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 157153 event pairs, 2545 based on Foata normal form. 429/36267 useless extension candidates. Maximal degree in co-relation 159405. Up to 16532 conditions per place. [2025-03-09 01:19:05,802 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 204 selfloop transitions, 9 changer transitions 0/220 dead transitions. [2025-03-09 01:19:05,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 220 transitions, 1935 flow [2025-03-09 01:19:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:19:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:19:05,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-03-09 01:19:05,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-09 01:19:05,806 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 538 flow. Second operand 5 states and 175 transitions. [2025-03-09 01:19:05,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 220 transitions, 1935 flow [2025-03-09 01:19:06,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 220 transitions, 1869 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-03-09 01:19:06,022 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 533 flow [2025-03-09 01:19:06,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2025-03-09 01:19:06,022 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2025-03-09 01:19:06,022 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 533 flow [2025-03-09 01:19:06,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 01:19:06,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:19:06,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:19:06,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 01:19:06,023 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:19:06,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:19:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1554692692, now seen corresponding path program 2 times [2025-03-09 01:19:06,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:19:06,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855062745] [2025-03-09 01:19:06,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:19:06,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:19:06,029 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:19:06,033 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:19:06,034 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:19:06,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:19:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:19:06,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:19:06,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855062745] [2025-03-09 01:19:06,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855062745] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:19:06,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076342116] [2025-03-09 01:19:06,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:19:06,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:19:06,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:19:06,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:19:06,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 01:19:06,123 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-09 01:19:06,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-09 01:19:06,142 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:19:06,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:19:06,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:19:06,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:19:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:19:06,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:19:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:19:06,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076342116] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:19:06,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:19:06,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-03-09 01:19:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286035248] [2025-03-09 01:19:06,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:19:06,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:19:06,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:19:06,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:19:06,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:19:06,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 01:19:06,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2025-03-09 01:19:06,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:19:06,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 01:19:06,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:19:08,479 INFO L124 PetriNetUnfolderBase]: 28729/35143 cut-off events. [2025-03-09 01:19:08,479 INFO L125 PetriNetUnfolderBase]: For 140568/140768 co-relation queries the response was YES. [2025-03-09 01:19:08,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172686 conditions, 35143 events. 28729/35143 cut-off events. For 140568/140768 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 159143 event pairs, 8432 based on Foata normal form. 880/35972 useless extension candidates. Maximal degree in co-relation 156526. Up to 19637 conditions per place. [2025-03-09 01:19:08,881 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 199 selfloop transitions, 8 changer transitions 0/214 dead transitions. [2025-03-09 01:19:08,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 214 transitions, 1842 flow [2025-03-09 01:19:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:19:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:19:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2025-03-09 01:19:08,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2025-03-09 01:19:08,882 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 533 flow. Second operand 5 states and 172 transitions. [2025-03-09 01:19:08,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 214 transitions, 1842 flow [2025-03-09 01:19:09,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 214 transitions, 1835 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:19:09,033 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 580 flow [2025-03-09 01:19:09,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2025-03-09 01:19:09,034 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2025-03-09 01:19:09,034 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 580 flow [2025-03-09 01:19:09,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2025-03-09 01:19:09,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:19:09,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:19:09,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 01:19:09,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:19:09,235 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-09 01:19:09,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:19:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2116132472, now seen corresponding path program 1 times [2025-03-09 01:19:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:19:09,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736795294] [2025-03-09 01:19:09,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:19:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:19:09,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 01:19:09,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 01:19:09,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:19:09,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:19:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:19:09,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:19:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736795294] [2025-03-09 01:19:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736795294] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:19:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760984429] [2025-03-09 01:19:09,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:19:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:19:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:19:09,665 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:19:09,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 01:19:09,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 01:19:09,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 01:19:09,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:19:09,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:19:09,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:19:09,829 INFO L279 TraceCheckSpWp]: Computing forward predicates...