./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB --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 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:42:54,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:42:54,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:42:54,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:42:54,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:42:54,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:42:54,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:42:54,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:42:54,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:42:54,399 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:42:54,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:42:54,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:42:54,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:42:54,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:42:54,402 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:42:54,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:42:54,403 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:42:54,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:42:54,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:42:54,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:42:54,404 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:42:54,405 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:42:54,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:42:54,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:42:54,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:42:54,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:54,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:42:54,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:42:54,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:42:54,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:42:54,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:54,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:42:54,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:42:54,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:42:54,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:42:54,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:42:54,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:42:54,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:42:54,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:42:54,408 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-11-28 03:42:54,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:42:54,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:42:54,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:42:54,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:42:54,897 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:42:54,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-28 03:42:58,713 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/data/b6d77c371/54b793deec4a4b5d9868d82169765f95/FLAGe1f7d5bde [2024-11-28 03:42:59,105 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:42:59,106 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-28 03:42:59,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/data/b6d77c371/54b793deec4a4b5d9868d82169765f95/FLAGe1f7d5bde [2024-11-28 03:42:59,137 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/data/b6d77c371/54b793deec4a4b5d9868d82169765f95 [2024-11-28 03:42:59,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:42:59,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:42:59,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:42:59,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:42:59,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:42:59,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bade82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59, skipping insertion in model container [2024-11-28 03:42:59,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:42:59,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:42:59,445 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:42:59,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:42:59,491 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:42:59,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59 WrapperNode [2024-11-28 03:42:59,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:42:59,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:42:59,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:42:59,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:42:59,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,540 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 160 [2024-11-28 03:42:59,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:42:59,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:42:59,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:42:59,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:42:59,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,574 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:42:59,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:42:59,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:42:59,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:42:59,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:42:59,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (1/1) ... [2024-11-28 03:42:59,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:59,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:59,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:42:59,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:42:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:42:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:42:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:42:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:42:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:42:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:42:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:42:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:42:59,696 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:42:59,856 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:42:59,860 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:43:00,357 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:43:00,357 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:43:00,892 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:43:00,892 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:43:00,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:43:00 BoogieIcfgContainer [2024-11-28 03:43:00,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:43:00,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:43:00,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:43:00,905 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:43:00,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:42:59" (1/3) ... [2024-11-28 03:43:00,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21867de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:43:00, skipping insertion in model container [2024-11-28 03:43:00,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:59" (2/3) ... [2024-11-28 03:43:00,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21867de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:43:00, skipping insertion in model container [2024-11-28 03:43:00,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:43:00" (3/3) ... [2024-11-28 03:43:00,912 INFO L128 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-11-28 03:43:00,933 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:43:00,935 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibonacci.wvr.c that has 3 procedures, 19 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 03:43:00,935 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:43:01,020 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:43:01,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-28 03:43:01,126 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-28 03:43:01,131 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:43:01,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-28 03:43:01,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-28 03:43:01,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-28 03:43:01,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:43:01,183 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;@6fe60469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:43:01,183 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 03:43:01,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:43:01,200 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-28 03:43:01,200 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:43:01,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:01,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:01,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:01,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2079003831, now seen corresponding path program 1 times [2024-11-28 03:43:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:01,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185780005] [2024-11-28 03:43:01,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:01,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:02,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185780005] [2024-11-28 03:43:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185780005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:43:02,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:43:02,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:43:02,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389736196] [2024-11-28 03:43:02,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:02,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:43:02,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:02,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:43:02,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:43:02,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:02,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:02,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:02,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:02,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:02,586 INFO L124 PetriNetUnfolderBase]: 67/128 cut-off events. [2024-11-28 03:43:02,588 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-28 03:43:02,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 128 events. 67/128 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 338 event pairs, 14 based on Foata normal form. 3/101 useless extension candidates. Maximal degree in co-relation 222. Up to 72 conditions per place. [2024-11-28 03:43:02,594 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 25 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2024-11-28 03:43:02,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 168 flow [2024-11-28 03:43:02,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:43:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:43:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-11-28 03:43:02,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-28 03:43:02,617 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 5 states and 57 transitions. [2024-11-28 03:43:02,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 168 flow [2024-11-28 03:43:02,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:02,629 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2024-11-28 03:43:02,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-28 03:43:02,642 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-11-28 03:43:02,642 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2024-11-28 03:43:02,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:02,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:02,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:02,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:43:02,644 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:02,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash 263312019, now seen corresponding path program 2 times [2024-11-28 03:43:02,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:02,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969327106] [2024-11-28 03:43:02,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:02,688 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:43:02,689 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:03,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:03,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969327106] [2024-11-28 03:43:03,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969327106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:43:03,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:43:03,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:43:03,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489123850] [2024-11-28 03:43:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:03,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:43:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:03,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:43:03,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:43:03,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:03,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:03,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:03,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:03,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:03,300 INFO L124 PetriNetUnfolderBase]: 66/121 cut-off events. [2024-11-28 03:43:03,300 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-28 03:43:03,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 121 events. 66/121 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 316 event pairs, 14 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 325. Up to 72 conditions per place. [2024-11-28 03:43:03,302 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-11-28 03:43:03,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 182 flow [2024-11-28 03:43:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:43:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:43:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-28 03:43:03,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-28 03:43:03,304 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 54 transitions. [2024-11-28 03:43:03,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 182 flow [2024-11-28 03:43:03,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 03:43:03,307 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2024-11-28 03:43:03,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2024-11-28 03:43:03,308 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2024-11-28 03:43:03,308 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2024-11-28 03:43:03,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:03,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:03,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:03,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:43:03,309 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:03,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1238869484, now seen corresponding path program 1 times [2024-11-28 03:43:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:03,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26757778] [2024-11-28 03:43:03,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:03,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26757778] [2024-11-28 03:43:03,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26757778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:03,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737718790] [2024-11-28 03:43:03,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:03,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:03,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:03,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:03,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:43:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:03,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:43:03,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:03,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737718790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:03,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:03,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 03:43:03,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207975040] [2024-11-28 03:43:03,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:03,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:43:03,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:03,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:43:03,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:43:03,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:03,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 100 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:03,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:03,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:03,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:04,113 INFO L124 PetriNetUnfolderBase]: 102/171 cut-off events. [2024-11-28 03:43:04,113 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-28 03:43:04,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 171 events. 102/171 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 485 event pairs, 20 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 550. Up to 79 conditions per place. [2024-11-28 03:43:04,118 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 37 selfloop transitions, 23 changer transitions 0/61 dead transitions. [2024-11-28 03:43:04,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 61 transitions, 384 flow [2024-11-28 03:43:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:43:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:43:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-11-28 03:43:04,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-28 03:43:04,127 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 10 states and 96 transitions. [2024-11-28 03:43:04,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 61 transitions, 384 flow [2024-11-28 03:43:04,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 61 transitions, 364 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-28 03:43:04,135 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 282 flow [2024-11-28 03:43:04,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2024-11-28 03:43:04,136 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 19 predicate places. [2024-11-28 03:43:04,136 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 282 flow [2024-11-28 03:43:04,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:04,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:04,137 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:04,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:43:04,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:04,338 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:04,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash 409949042, now seen corresponding path program 2 times [2024-11-28 03:43:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176697578] [2024-11-28 03:43:04,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:04,361 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:04,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176697578] [2024-11-28 03:43:04,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176697578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188265765] [2024-11-28 03:43:04,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:04,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:04,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:04,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:04,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:43:04,590 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:04,590 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:04,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:43:04,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:04,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:04,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188265765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:04,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:04,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 03:43:04,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11210130] [2024-11-28 03:43:04,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:04,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:43:04,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:04,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:43:04,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:43:04,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:04,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:04,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:04,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:04,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:04,975 INFO L124 PetriNetUnfolderBase]: 106/187 cut-off events. [2024-11-28 03:43:04,975 INFO L125 PetriNetUnfolderBase]: For 428/428 co-relation queries the response was YES. [2024-11-28 03:43:04,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 187 events. 106/187 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 569 event pairs, 15 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 602. Up to 63 conditions per place. [2024-11-28 03:43:04,983 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 45 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2024-11-28 03:43:04,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 522 flow [2024-11-28 03:43:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-11-28 03:43:04,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-28 03:43:04,987 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 282 flow. Second operand 7 states and 74 transitions. [2024-11-28 03:43:04,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 522 flow [2024-11-28 03:43:05,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 476 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-11-28 03:43:05,006 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 291 flow [2024-11-28 03:43:05,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-28 03:43:05,008 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 27 predicate places. [2024-11-28 03:43:05,009 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 291 flow [2024-11-28 03:43:05,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:05,009 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:05,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:05,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:05,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:05,210 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:05,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1146625076, now seen corresponding path program 3 times [2024-11-28 03:43:05,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:05,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98851071] [2024-11-28 03:43:05,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:05,235 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:05,235 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:05,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98851071] [2024-11-28 03:43:05,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98851071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722026679] [2024-11-28 03:43:05,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:05,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:05,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:05,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:05,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:43:05,435 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:05,435 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:05,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:43:05,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:05,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:05,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722026679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:05,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:05,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 03:43:05,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695575557] [2024-11-28 03:43:05,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:05,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:43:05,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:05,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:43:05,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:43:05,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:05,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 291 flow. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:05,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:05,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:05,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:05,848 INFO L124 PetriNetUnfolderBase]: 113/199 cut-off events. [2024-11-28 03:43:05,848 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-11-28 03:43:05,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 199 events. 113/199 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 599 event pairs, 28 based on Foata normal form. 5/204 useless extension candidates. Maximal degree in co-relation 707. Up to 143 conditions per place. [2024-11-28 03:43:05,852 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 23 changer transitions 0/58 dead transitions. [2024-11-28 03:43:05,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 505 flow [2024-11-28 03:43:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:43:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:43:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-11-28 03:43:05,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-28 03:43:05,854 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 291 flow. Second operand 6 states and 59 transitions. [2024-11-28 03:43:05,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 505 flow [2024-11-28 03:43:05,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 464 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 03:43:05,863 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 409 flow [2024-11-28 03:43:05,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-28 03:43:05,865 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-11-28 03:43:05,865 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 409 flow [2024-11-28 03:43:05,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:05,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:05,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:05,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:43:06,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:06,070 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:06,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash -451450025, now seen corresponding path program 1 times [2024-11-28 03:43:06,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:06,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408691827] [2024-11-28 03:43:06,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:06,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:06,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:06,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408691827] [2024-11-28 03:43:06,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408691827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:43:06,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:43:06,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:43:06,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327889831] [2024-11-28 03:43:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:06,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:43:06,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:06,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:43:06,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:43:06,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:06,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:06,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:06,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:06,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:06,413 INFO L124 PetriNetUnfolderBase]: 112/201 cut-off events. [2024-11-28 03:43:06,413 INFO L125 PetriNetUnfolderBase]: For 859/859 co-relation queries the response was YES. [2024-11-28 03:43:06,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 999 conditions, 201 events. 112/201 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 643 event pairs, 23 based on Foata normal form. 3/204 useless extension candidates. Maximal degree in co-relation 797. Up to 128 conditions per place. [2024-11-28 03:43:06,417 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 48 selfloop transitions, 10 changer transitions 6/65 dead transitions. [2024-11-28 03:43:06,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 619 flow [2024-11-28 03:43:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:43:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:43:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-28 03:43:06,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-28 03:43:06,419 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 409 flow. Second operand 5 states and 54 transitions. [2024-11-28 03:43:06,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 619 flow [2024-11-28 03:43:06,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 571 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-11-28 03:43:06,430 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 376 flow [2024-11-28 03:43:06,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-28 03:43:06,431 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 36 predicate places. [2024-11-28 03:43:06,431 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 376 flow [2024-11-28 03:43:06,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:06,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:06,432 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:06,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:43:06,433 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:06,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash -152911528, now seen corresponding path program 4 times [2024-11-28 03:43:06,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:06,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242978367] [2024-11-28 03:43:06,434 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:06,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:06,452 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:06,452 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:06,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:06,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242978367] [2024-11-28 03:43:06,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242978367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:43:06,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:43:06,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:43:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608541205] [2024-11-28 03:43:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:06,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:43:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:06,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:43:06,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:43:06,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:06,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:06,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:06,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:06,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:06,706 INFO L124 PetriNetUnfolderBase]: 108/199 cut-off events. [2024-11-28 03:43:06,706 INFO L125 PetriNetUnfolderBase]: For 861/861 co-relation queries the response was YES. [2024-11-28 03:43:06,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 199 events. 108/199 cut-off events. For 861/861 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 622 event pairs, 27 based on Foata normal form. 2/201 useless extension candidates. Maximal degree in co-relation 904. Up to 123 conditions per place. [2024-11-28 03:43:06,710 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 38 selfloop transitions, 18 changer transitions 3/60 dead transitions. [2024-11-28 03:43:06,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 544 flow [2024-11-28 03:43:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:43:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:43:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-28 03:43:06,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 03:43:06,712 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 376 flow. Second operand 5 states and 50 transitions. [2024-11-28 03:43:06,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 544 flow [2024-11-28 03:43:06,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 514 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-28 03:43:06,722 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 379 flow [2024-11-28 03:43:06,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-11-28 03:43:06,723 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 36 predicate places. [2024-11-28 03:43:06,723 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 379 flow [2024-11-28 03:43:06,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:06,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:06,724 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:06,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:43:06,724 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:06,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1704084513, now seen corresponding path program 2 times [2024-11-28 03:43:06,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:06,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655760080] [2024-11-28 03:43:06,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:06,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:06,742 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:06,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:06,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:06,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655760080] [2024-11-28 03:43:06,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655760080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:06,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298162522] [2024-11-28 03:43:06,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:06,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:06,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:06,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:06,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:43:06,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:06,929 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:06,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:43:06,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:07,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:07,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298162522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:07,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:07,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 03:43:07,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969149512] [2024-11-28 03:43:07,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:07,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:43:07,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:07,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:43:07,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:43:07,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:07,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 379 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:07,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:07,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:07,316 INFO L124 PetriNetUnfolderBase]: 112/203 cut-off events. [2024-11-28 03:43:07,316 INFO L125 PetriNetUnfolderBase]: For 836/836 co-relation queries the response was YES. [2024-11-28 03:43:07,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 203 events. 112/203 cut-off events. For 836/836 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 622 event pairs, 12 based on Foata normal form. 4/207 useless extension candidates. Maximal degree in co-relation 920. Up to 58 conditions per place. [2024-11-28 03:43:07,319 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 46 selfloop transitions, 24 changer transitions 0/71 dead transitions. [2024-11-28 03:43:07,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 648 flow [2024-11-28 03:43:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-28 03:43:07,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-28 03:43:07,321 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 379 flow. Second operand 7 states and 69 transitions. [2024-11-28 03:43:07,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 648 flow [2024-11-28 03:43:07,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 601 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-28 03:43:07,331 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 442 flow [2024-11-28 03:43:07,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-11-28 03:43:07,335 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 38 predicate places. [2024-11-28 03:43:07,336 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 442 flow [2024-11-28 03:43:07,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:07,336 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:07,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:43:07,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:07,537 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:07,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash 561996466, now seen corresponding path program 5 times [2024-11-28 03:43:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388479710] [2024-11-28 03:43:07,538 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:07,557 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:07,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:07,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388479710] [2024-11-28 03:43:07,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388479710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:43:07,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:43:07,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:43:07,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064240190] [2024-11-28 03:43:07,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:07,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:43:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:07,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:43:07,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:43:07,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:07,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:07,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:07,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:07,789 INFO L124 PetriNetUnfolderBase]: 111/204 cut-off events. [2024-11-28 03:43:07,789 INFO L125 PetriNetUnfolderBase]: For 929/929 co-relation queries the response was YES. [2024-11-28 03:43:07,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 204 events. 111/204 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 642 event pairs, 20 based on Foata normal form. 2/206 useless extension candidates. Maximal degree in co-relation 900. Up to 103 conditions per place. [2024-11-28 03:43:07,792 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 39 selfloop transitions, 18 changer transitions 2/60 dead transitions. [2024-11-28 03:43:07,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 599 flow [2024-11-28 03:43:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:43:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:43:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-28 03:43:07,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-28 03:43:07,794 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 442 flow. Second operand 5 states and 47 transitions. [2024-11-28 03:43:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 599 flow [2024-11-28 03:43:07,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 521 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-11-28 03:43:07,801 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 396 flow [2024-11-28 03:43:07,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-11-28 03:43:07,802 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 38 predicate places. [2024-11-28 03:43:07,802 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 396 flow [2024-11-28 03:43:07,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:07,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:07,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:43:07,803 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:07,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:07,804 INFO L85 PathProgramCache]: Analyzing trace with hash -20392319, now seen corresponding path program 3 times [2024-11-28 03:43:07,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:07,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672681426] [2024-11-28 03:43:07,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:07,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:07,819 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:07,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:07,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672681426] [2024-11-28 03:43:07,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672681426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:43:07,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:43:07,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:43:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330865026] [2024-11-28 03:43:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:07,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:43:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:07,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:43:07,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:43:07,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:07,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:07,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:07,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:08,051 INFO L124 PetriNetUnfolderBase]: 109/203 cut-off events. [2024-11-28 03:43:08,051 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-11-28 03:43:08,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 203 events. 109/203 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 649 event pairs, 31 based on Foata normal form. 3/206 useless extension candidates. Maximal degree in co-relation 887. Up to 161 conditions per place. [2024-11-28 03:43:08,056 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 40 selfloop transitions, 15 changer transitions 3/59 dead transitions. [2024-11-28 03:43:08,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 540 flow [2024-11-28 03:43:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:43:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:43:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-11-28 03:43:08,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-11-28 03:43:08,058 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 396 flow. Second operand 5 states and 49 transitions. [2024-11-28 03:43:08,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 540 flow [2024-11-28 03:43:08,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 502 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:08,065 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 381 flow [2024-11-28 03:43:08,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-11-28 03:43:08,067 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 38 predicate places. [2024-11-28 03:43:08,067 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 381 flow [2024-11-28 03:43:08,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:08,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:08,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:08,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:43:08,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:08,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1754791467, now seen corresponding path program 4 times [2024-11-28 03:43:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:08,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687893828] [2024-11-28 03:43:08,068 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:08,083 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:08,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687893828] [2024-11-28 03:43:08,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687893828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20403124] [2024-11-28 03:43:08,153 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:08,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:08,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:08,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:08,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:43:08,254 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:08,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:08,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:43:08,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:08,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:08,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20403124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:08,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:08,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 03:43:08,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512468827] [2024-11-28 03:43:08,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:08,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:43:08,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:08,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:43:08,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:43:08,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:08,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:08,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:08,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:08,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:08,536 INFO L124 PetriNetUnfolderBase]: 114/209 cut-off events. [2024-11-28 03:43:08,536 INFO L125 PetriNetUnfolderBase]: For 690/690 co-relation queries the response was YES. [2024-11-28 03:43:08,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 209 events. 114/209 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 661 event pairs, 31 based on Foata normal form. 4/213 useless extension candidates. Maximal degree in co-relation 946. Up to 165 conditions per place. [2024-11-28 03:43:08,539 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 43 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-11-28 03:43:08,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 572 flow [2024-11-28 03:43:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:43:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:43:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2024-11-28 03:43:08,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-28 03:43:08,540 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 381 flow. Second operand 6 states and 57 transitions. [2024-11-28 03:43:08,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 572 flow [2024-11-28 03:43:08,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 536 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:08,547 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 422 flow [2024-11-28 03:43:08,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=422, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-28 03:43:08,548 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-11-28 03:43:08,548 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 422 flow [2024-11-28 03:43:08,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:08,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:08,548 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:08,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:08,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 03:43:08,753 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:08,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:08,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1430593160, now seen corresponding path program 6 times [2024-11-28 03:43:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:08,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747012253] [2024-11-28 03:43:08,754 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:08,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:08,779 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:08,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:08,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747012253] [2024-11-28 03:43:08,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747012253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:43:08,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:43:08,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:43:08,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441077699] [2024-11-28 03:43:08,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:08,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:43:08,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:08,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:43:08,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:43:08,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:08,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 422 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:08,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:08,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:08,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:09,033 INFO L124 PetriNetUnfolderBase]: 110/197 cut-off events. [2024-11-28 03:43:09,033 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-11-28 03:43:09,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 197 events. 110/197 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 585 event pairs, 27 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 805. Up to 143 conditions per place. [2024-11-28 03:43:09,037 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 36 selfloop transitions, 19 changer transitions 2/58 dead transitions. [2024-11-28 03:43:09,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 544 flow [2024-11-28 03:43:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:43:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:43:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-28 03:43:09,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-28 03:43:09,038 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 422 flow. Second operand 5 states and 47 transitions. [2024-11-28 03:43:09,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 544 flow [2024-11-28 03:43:09,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 507 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-28 03:43:09,049 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 405 flow [2024-11-28 03:43:09,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-11-28 03:43:09,051 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 41 predicate places. [2024-11-28 03:43:09,051 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 405 flow [2024-11-28 03:43:09,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:09,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:09,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:09,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:43:09,052 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:09,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:09,053 INFO L85 PathProgramCache]: Analyzing trace with hash 290521109, now seen corresponding path program 5 times [2024-11-28 03:43:09,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:09,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54211918] [2024-11-28 03:43:09,054 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:09,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:09,081 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:09,081 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:09,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54211918] [2024-11-28 03:43:09,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54211918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:43:09,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:43:09,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:43:09,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995774119] [2024-11-28 03:43:09,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:09,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:43:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:09,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:43:09,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:43:09,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:09,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:09,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:09,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:09,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:09,325 INFO L124 PetriNetUnfolderBase]: 103/188 cut-off events. [2024-11-28 03:43:09,327 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2024-11-28 03:43:09,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 188 events. 103/188 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 560 event pairs, 16 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 752. Up to 91 conditions per place. [2024-11-28 03:43:09,330 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 46 selfloop transitions, 15 changer transitions 1/63 dead transitions. [2024-11-28 03:43:09,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 610 flow [2024-11-28 03:43:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:43:09,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:43:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-11-28 03:43:09,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-28 03:43:09,332 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 405 flow. Second operand 5 states and 48 transitions. [2024-11-28 03:43:09,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 610 flow [2024-11-28 03:43:09,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 567 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:09,340 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 442 flow [2024-11-28 03:43:09,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=442, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-28 03:43:09,343 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 40 predicate places. [2024-11-28 03:43:09,343 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 442 flow [2024-11-28 03:43:09,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:09,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:09,343 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:09,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:43:09,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:09,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash -568948067, now seen corresponding path program 6 times [2024-11-28 03:43:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:09,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319338974] [2024-11-28 03:43:09,345 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:09,376 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:09,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:09,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:09,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319338974] [2024-11-28 03:43:09,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319338974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:09,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856754366] [2024-11-28 03:43:09,491 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:09,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:09,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:09,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:09,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:43:09,587 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:09,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:09,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:43:09,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:09,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:09,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856754366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:09,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:09,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 03:43:09,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550348985] [2024-11-28 03:43:09,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:09,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:43:09,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:09,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:43:09,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:43:09,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:09,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 442 flow. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:09,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:09,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:09,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:09,937 INFO L124 PetriNetUnfolderBase]: 103/180 cut-off events. [2024-11-28 03:43:09,937 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-11-28 03:43:09,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 180 events. 103/180 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 518 event pairs, 14 based on Foata normal form. 4/184 useless extension candidates. Maximal degree in co-relation 808. Up to 65 conditions per place. [2024-11-28 03:43:09,940 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 40 selfloop transitions, 29 changer transitions 0/70 dead transitions. [2024-11-28 03:43:09,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 621 flow [2024-11-28 03:43:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:43:09,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:43:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 86 transitions. [2024-11-28 03:43:09,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-28 03:43:09,941 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 442 flow. Second operand 10 states and 86 transitions. [2024-11-28 03:43:09,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 621 flow [2024-11-28 03:43:09,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 589 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-28 03:43:09,949 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 461 flow [2024-11-28 03:43:09,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=461, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-11-28 03:43:09,950 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 45 predicate places. [2024-11-28 03:43:09,950 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 461 flow [2024-11-28 03:43:09,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:09,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:09,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:09,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:43:10,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:43:10,156 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:10,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -707738172, now seen corresponding path program 1 times [2024-11-28 03:43:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093136101] [2024-11-28 03:43:10,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:10,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:10,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093136101] [2024-11-28 03:43:10,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093136101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:10,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110763930] [2024-11-28 03:43:10,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:10,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:10,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:10,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:10,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:43:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:10,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:43:10,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:10,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:11,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110763930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:11,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-28 03:43:11,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245798343] [2024-11-28 03:43:11,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:11,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:43:11,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:11,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:43:11,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:43:11,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:11,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 461 flow. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:11,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:11,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:11,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:11,633 INFO L124 PetriNetUnfolderBase]: 148/266 cut-off events. [2024-11-28 03:43:11,633 INFO L125 PetriNetUnfolderBase]: For 870/870 co-relation queries the response was YES. [2024-11-28 03:43:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 266 events. 148/266 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 893 event pairs, 11 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 1212. Up to 170 conditions per place. [2024-11-28 03:43:11,636 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 67 selfloop transitions, 20 changer transitions 4/92 dead transitions. [2024-11-28 03:43:11,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 856 flow [2024-11-28 03:43:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-11-28 03:43:11,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2024-11-28 03:43:11,638 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 461 flow. Second operand 7 states and 73 transitions. [2024-11-28 03:43:11,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 856 flow [2024-11-28 03:43:11,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 92 transitions, 727 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-11-28 03:43:11,648 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 530 flow [2024-11-28 03:43:11,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-11-28 03:43:11,649 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 45 predicate places. [2024-11-28 03:43:11,649 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 530 flow [2024-11-28 03:43:11,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:11,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:11,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:11,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:43:11,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:11,854 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:11,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:11,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2038590018, now seen corresponding path program 2 times [2024-11-28 03:43:11,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:11,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518992946] [2024-11-28 03:43:11,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:11,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:11,900 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:11,901 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518992946] [2024-11-28 03:43:12,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518992946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:12,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076002317] [2024-11-28 03:43:12,241 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:12,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:12,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:12,244 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:12,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:43:12,337 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:12,337 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:12,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:43:12,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:12,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:12,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076002317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:12,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:12,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-28 03:43:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645321445] [2024-11-28 03:43:12,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:12,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:12,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:12,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:12,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:12,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:12,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 530 flow. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:12,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:12,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:12,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:13,220 INFO L124 PetriNetUnfolderBase]: 151/272 cut-off events. [2024-11-28 03:43:13,220 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-28 03:43:13,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 272 events. 151/272 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 927 event pairs, 12 based on Foata normal form. 1/273 useless extension candidates. Maximal degree in co-relation 1296. Up to 194 conditions per place. [2024-11-28 03:43:13,224 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 66 selfloop transitions, 20 changer transitions 4/91 dead transitions. [2024-11-28 03:43:13,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 830 flow [2024-11-28 03:43:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-11-28 03:43:13,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 03:43:13,227 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 530 flow. Second operand 7 states and 70 transitions. [2024-11-28 03:43:13,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 830 flow [2024-11-28 03:43:13,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 756 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-11-28 03:43:13,238 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 582 flow [2024-11-28 03:43:13,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-11-28 03:43:13,239 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 50 predicate places. [2024-11-28 03:43:13,239 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 582 flow [2024-11-28 03:43:13,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:13,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:13,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:13,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:43:13,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:13,441 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:13,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:13,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1331336416, now seen corresponding path program 3 times [2024-11-28 03:43:13,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:13,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754750967] [2024-11-28 03:43:13,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:13,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:13,474 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:13,474 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:13,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:13,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754750967] [2024-11-28 03:43:13,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754750967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:13,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616843739] [2024-11-28 03:43:13,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:13,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:13,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:13,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:13,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:43:13,965 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:13,965 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:13,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:43:13,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:14,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616843739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:14,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:14,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-28 03:43:14,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696507144] [2024-11-28 03:43:14,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:14,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:43:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:14,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:43:14,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:43:14,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:14,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 582 flow. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:14,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:14,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:14,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:14,975 INFO L124 PetriNetUnfolderBase]: 149/264 cut-off events. [2024-11-28 03:43:14,976 INFO L125 PetriNetUnfolderBase]: For 839/839 co-relation queries the response was YES. [2024-11-28 03:43:14,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 264 events. 149/264 cut-off events. For 839/839 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 906 event pairs, 11 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 1253. Up to 173 conditions per place. [2024-11-28 03:43:14,981 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 65 selfloop transitions, 21 changer transitions 4/91 dead transitions. [2024-11-28 03:43:14,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 838 flow [2024-11-28 03:43:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-11-28 03:43:14,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-11-28 03:43:14,986 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 582 flow. Second operand 7 states and 71 transitions. [2024-11-28 03:43:14,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 838 flow [2024-11-28 03:43:14,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 802 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:14,998 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 619 flow [2024-11-28 03:43:14,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=619, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-11-28 03:43:14,999 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 54 predicate places. [2024-11-28 03:43:14,999 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 619 flow [2024-11-28 03:43:14,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:14,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:15,000 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:15,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:43:15,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:43:15,202 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:15,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:15,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1979286044, now seen corresponding path program 4 times [2024-11-28 03:43:15,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:15,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086419122] [2024-11-28 03:43:15,203 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:15,232 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:15,232 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:15,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086419122] [2024-11-28 03:43:15,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086419122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:15,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727094773] [2024-11-28 03:43:15,568 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:15,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:15,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:15,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:15,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:43:15,669 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:15,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:15,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:43:15,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:15,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:16,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727094773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:16,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:16,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-28 03:43:16,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530813647] [2024-11-28 03:43:16,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:16,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:16,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:16,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:16,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:16,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:16,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 619 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:16,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:16,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:16,549 INFO L124 PetriNetUnfolderBase]: 184/328 cut-off events. [2024-11-28 03:43:16,549 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-11-28 03:43:16,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 328 events. 184/328 cut-off events. For 1225/1225 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1195 event pairs, 11 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1584. Up to 248 conditions per place. [2024-11-28 03:43:16,586 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 82 selfloop transitions, 20 changer transitions 4/107 dead transitions. [2024-11-28 03:43:16,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 1056 flow [2024-11-28 03:43:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-28 03:43:16,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-28 03:43:16,590 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 619 flow. Second operand 7 states and 69 transitions. [2024-11-28 03:43:16,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 1056 flow [2024-11-28 03:43:16,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 107 transitions, 1011 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:16,603 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 769 flow [2024-11-28 03:43:16,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=769, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-11-28 03:43:16,605 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 59 predicate places. [2024-11-28 03:43:16,607 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 769 flow [2024-11-28 03:43:16,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:16,608 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:16,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:43:16,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:43:16,812 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:16,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:16,814 INFO L85 PathProgramCache]: Analyzing trace with hash -514815302, now seen corresponding path program 5 times [2024-11-28 03:43:16,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:16,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960724703] [2024-11-28 03:43:16,814 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:16,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:16,835 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:16,835 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:17,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:17,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960724703] [2024-11-28 03:43:17,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960724703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:17,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293662968] [2024-11-28 03:43:17,138 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:17,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:17,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:17,141 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:17,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:43:17,233 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:17,233 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:17,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:43:17,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:17,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:17,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293662968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:17,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:17,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-28 03:43:17,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168292627] [2024-11-28 03:43:17,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:17,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:17,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:17,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:17,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:17,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 769 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:17,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:17,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:17,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:18,086 INFO L124 PetriNetUnfolderBase]: 184/330 cut-off events. [2024-11-28 03:43:18,087 INFO L125 PetriNetUnfolderBase]: For 1317/1317 co-relation queries the response was YES. [2024-11-28 03:43:18,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 330 events. 184/330 cut-off events. For 1317/1317 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1222 event pairs, 11 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1670. Up to 270 conditions per place. [2024-11-28 03:43:18,092 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 78 selfloop transitions, 21 changer transitions 4/104 dead transitions. [2024-11-28 03:43:18,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 104 transitions, 1081 flow [2024-11-28 03:43:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:18,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-11-28 03:43:18,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-11-28 03:43:18,094 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 769 flow. Second operand 7 states and 64 transitions. [2024-11-28 03:43:18,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 104 transitions, 1081 flow [2024-11-28 03:43:18,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 1038 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-28 03:43:18,112 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 855 flow [2024-11-28 03:43:18,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-11-28 03:43:18,113 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 65 predicate places. [2024-11-28 03:43:18,113 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 855 flow [2024-11-28 03:43:18,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:18,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:18,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:18,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:43:18,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:18,315 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:18,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2062402934, now seen corresponding path program 6 times [2024-11-28 03:43:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:18,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353424484] [2024-11-28 03:43:18,317 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:18,345 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:18,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353424484] [2024-11-28 03:43:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353424484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2391120] [2024-11-28 03:43:18,717 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:18,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:18,722 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:18,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:43:18,826 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:18,826 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:18,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:43:18,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:19,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2391120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:19,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:19,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-28 03:43:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962124406] [2024-11-28 03:43:19,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:19,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:43:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:19,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:43:19,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:43:19,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:19,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 855 flow. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:19,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:19,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:19,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:19,829 INFO L124 PetriNetUnfolderBase]: 183/323 cut-off events. [2024-11-28 03:43:19,830 INFO L125 PetriNetUnfolderBase]: For 1296/1296 co-relation queries the response was YES. [2024-11-28 03:43:19,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 323 events. 183/323 cut-off events. For 1296/1296 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1181 event pairs, 11 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1692. Up to 250 conditions per place. [2024-11-28 03:43:19,835 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 80 selfloop transitions, 22 changer transitions 4/107 dead transitions. [2024-11-28 03:43:19,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 107 transitions, 1151 flow [2024-11-28 03:43:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-11-28 03:43:19,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-11-28 03:43:19,838 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 855 flow. Second operand 7 states and 67 transitions. [2024-11-28 03:43:19,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 107 transitions, 1151 flow [2024-11-28 03:43:19,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 1085 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:19,854 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 881 flow [2024-11-28 03:43:19,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=881, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2024-11-28 03:43:19,855 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 69 predicate places. [2024-11-28 03:43:19,855 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 881 flow [2024-11-28 03:43:19,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:19,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:19,856 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:19,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:43:20,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:20,060 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:20,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1228959230, now seen corresponding path program 7 times [2024-11-28 03:43:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180698275] [2024-11-28 03:43:20,061 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:20,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:20,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:20,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180698275] [2024-11-28 03:43:20,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180698275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:20,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36642927] [2024-11-28 03:43:20,177 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:20,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:20,179 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:20,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:43:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:20,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:20,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:20,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:20,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36642927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:20,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:20,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 03:43:20,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232900241] [2024-11-28 03:43:20,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:20,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:43:20,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:20,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:43:20,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:43:20,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:20,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 881 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:20,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:20,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:20,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:20,759 INFO L124 PetriNetUnfolderBase]: 197/352 cut-off events. [2024-11-28 03:43:20,759 INFO L125 PetriNetUnfolderBase]: For 1880/1880 co-relation queries the response was YES. [2024-11-28 03:43:20,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 352 events. 197/352 cut-off events. For 1880/1880 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1356 event pairs, 30 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 1879. Up to 141 conditions per place. [2024-11-28 03:43:20,764 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 74 selfloop transitions, 35 changer transitions 9/119 dead transitions. [2024-11-28 03:43:20,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 119 transitions, 1289 flow [2024-11-28 03:43:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-28 03:43:20,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-28 03:43:20,766 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 881 flow. Second operand 7 states and 72 transitions. [2024-11-28 03:43:20,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 119 transitions, 1289 flow [2024-11-28 03:43:20,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 1222 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:20,785 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 950 flow [2024-11-28 03:43:20,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=950, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2024-11-28 03:43:20,786 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 74 predicate places. [2024-11-28 03:43:20,786 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 950 flow [2024-11-28 03:43:20,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:20,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:20,786 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:20,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:20,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:43:20,991 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:20,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1946212599, now seen corresponding path program 8 times [2024-11-28 03:43:20,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:20,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176236517] [2024-11-28 03:43:20,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:20,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:21,008 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:21,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176236517] [2024-11-28 03:43:21,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176236517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667728759] [2024-11-28 03:43:21,112 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:21,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:21,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:21,115 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:21,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:43:21,207 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:21,207 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:21,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:21,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:21,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:21,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667728759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:21,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:21,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 03:43:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445726133] [2024-11-28 03:43:21,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:21,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:43:21,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:21,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:43:21,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:43:21,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:21,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 950 flow. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:21,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:21,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:21,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:21,746 INFO L124 PetriNetUnfolderBase]: 204/358 cut-off events. [2024-11-28 03:43:21,747 INFO L125 PetriNetUnfolderBase]: For 2324/2324 co-relation queries the response was YES. [2024-11-28 03:43:21,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 358 events. 204/358 cut-off events. For 2324/2324 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1353 event pairs, 16 based on Foata normal form. 5/363 useless extension candidates. Maximal degree in co-relation 1966. Up to 79 conditions per place. [2024-11-28 03:43:21,752 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 79 selfloop transitions, 50 changer transitions 0/130 dead transitions. [2024-11-28 03:43:21,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 1441 flow [2024-11-28 03:43:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:43:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:43:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-11-28 03:43:21,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 03:43:21,754 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 950 flow. Second operand 10 states and 100 transitions. [2024-11-28 03:43:21,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 1441 flow [2024-11-28 03:43:21,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 130 transitions, 1390 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-28 03:43:21,774 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 1112 flow [2024-11-28 03:43:21,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1112, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-11-28 03:43:21,775 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 81 predicate places. [2024-11-28 03:43:21,775 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 1112 flow [2024-11-28 03:43:21,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:21,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:21,775 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:21,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:43:21,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:43:21,976 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:21,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1174641363, now seen corresponding path program 9 times [2024-11-28 03:43:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:21,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094469173] [2024-11-28 03:43:21,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:21,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:21,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:22,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:22,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094469173] [2024-11-28 03:43:22,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094469173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:22,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974481883] [2024-11-28 03:43:22,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:22,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:22,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:22,099 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:22,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:43:22,192 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:22,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:22,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:22,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:22,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:22,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974481883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:22,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:43:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558412502] [2024-11-28 03:43:22,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:22,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:43:22,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:22,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:43:22,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:43:22,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:22,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 1112 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:22,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:22,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:22,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:22,800 INFO L124 PetriNetUnfolderBase]: 249/432 cut-off events. [2024-11-28 03:43:22,801 INFO L125 PetriNetUnfolderBase]: For 4297/4297 co-relation queries the response was YES. [2024-11-28 03:43:22,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2739 conditions, 432 events. 249/432 cut-off events. For 4297/4297 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1661 event pairs, 28 based on Foata normal form. 17/449 useless extension candidates. Maximal degree in co-relation 2658. Up to 143 conditions per place. [2024-11-28 03:43:22,808 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 81 selfloop transitions, 65 changer transitions 0/147 dead transitions. [2024-11-28 03:43:22,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 147 transitions, 1858 flow [2024-11-28 03:43:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:43:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 03:43:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 126 transitions. [2024-11-28 03:43:22,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-28 03:43:22,811 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 1112 flow. Second operand 14 states and 126 transitions. [2024-11-28 03:43:22,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 147 transitions, 1858 flow [2024-11-28 03:43:22,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 147 transitions, 1662 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-11-28 03:43:22,836 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 1456 flow [2024-11-28 03:43:22,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1456, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2024-11-28 03:43:22,837 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 98 predicate places. [2024-11-28 03:43:22,837 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 1456 flow [2024-11-28 03:43:22,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:22,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:22,837 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:22,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:23,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:43:23,042 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:23,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash -398427847, now seen corresponding path program 10 times [2024-11-28 03:43:23,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:23,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235642211] [2024-11-28 03:43:23,043 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:23,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:23,057 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:23,058 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:23,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:23,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235642211] [2024-11-28 03:43:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235642211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:23,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232070518] [2024-11-28 03:43:23,144 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:23,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:23,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:23,147 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:23,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:43:23,240 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:23,240 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:23,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:23,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:23,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:23,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232070518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:23,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-28 03:43:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618612179] [2024-11-28 03:43:23,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:23,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:43:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:23,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:43:23,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:43:23,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:23,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 1456 flow. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:23,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:23,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:23,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:23,822 INFO L124 PetriNetUnfolderBase]: 302/517 cut-off events. [2024-11-28 03:43:23,822 INFO L125 PetriNetUnfolderBase]: For 7582/7582 co-relation queries the response was YES. [2024-11-28 03:43:23,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 517 events. 302/517 cut-off events. For 7582/7582 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2066 event pairs, 28 based on Foata normal form. 10/527 useless extension candidates. Maximal degree in co-relation 3414. Up to 179 conditions per place. [2024-11-28 03:43:23,831 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 77 selfloop transitions, 95 changer transitions 0/173 dead transitions. [2024-11-28 03:43:23,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 173 transitions, 2356 flow [2024-11-28 03:43:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:43:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 03:43:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 126 transitions. [2024-11-28 03:43:23,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-28 03:43:23,834 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 1456 flow. Second operand 14 states and 126 transitions. [2024-11-28 03:43:23,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 173 transitions, 2356 flow [2024-11-28 03:43:23,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 173 transitions, 2131 flow, removed 93 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:23,873 INFO L231 Difference]: Finished difference. Result has 135 places, 150 transitions, 1952 flow [2024-11-28 03:43:23,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1952, PETRI_PLACES=135, PETRI_TRANSITIONS=150} [2024-11-28 03:43:23,874 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 113 predicate places. [2024-11-28 03:43:23,874 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 150 transitions, 1952 flow [2024-11-28 03:43:23,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:23,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:23,874 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:23,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:24,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:24,075 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:24,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:24,075 INFO L85 PathProgramCache]: Analyzing trace with hash -45985055, now seen corresponding path program 11 times [2024-11-28 03:43:24,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:24,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639016252] [2024-11-28 03:43:24,076 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:24,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:24,094 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:24,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639016252] [2024-11-28 03:43:24,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639016252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:24,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552919698] [2024-11-28 03:43:24,213 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:24,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:24,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:24,216 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:24,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:43:24,307 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:24,307 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:24,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:24,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:24,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552919698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:24,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:24,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-28 03:43:24,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022485694] [2024-11-28 03:43:24,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:24,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:43:24,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:24,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:43:24,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:43:24,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:24,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 150 transitions, 1952 flow. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:24,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:24,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:24,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:24,831 INFO L124 PetriNetUnfolderBase]: 301/522 cut-off events. [2024-11-28 03:43:24,831 INFO L125 PetriNetUnfolderBase]: For 7584/7584 co-relation queries the response was YES. [2024-11-28 03:43:24,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3744 conditions, 522 events. 301/522 cut-off events. For 7584/7584 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2154 event pairs, 43 based on Foata normal form. 6/528 useless extension candidates. Maximal degree in co-relation 3645. Up to 233 conditions per place. [2024-11-28 03:43:24,842 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 86 selfloop transitions, 80 changer transitions 3/170 dead transitions. [2024-11-28 03:43:24,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 170 transitions, 2459 flow [2024-11-28 03:43:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:43:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 03:43:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-11-28 03:43:24,844 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-28 03:43:24,844 INFO L175 Difference]: Start difference. First operand has 135 places, 150 transitions, 1952 flow. Second operand 12 states and 105 transitions. [2024-11-28 03:43:24,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 170 transitions, 2459 flow [2024-11-28 03:43:24,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 170 transitions, 2237 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-11-28 03:43:24,900 INFO L231 Difference]: Finished difference. Result has 141 places, 149 transitions, 1895 flow [2024-11-28 03:43:24,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1895, PETRI_PLACES=141, PETRI_TRANSITIONS=149} [2024-11-28 03:43:24,901 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 119 predicate places. [2024-11-28 03:43:24,901 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 149 transitions, 1895 flow [2024-11-28 03:43:24,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:24,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:24,902 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:24,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:43:25,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:43:25,103 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:25,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash 345124280, now seen corresponding path program 12 times [2024-11-28 03:43:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:25,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277127541] [2024-11-28 03:43:25,104 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:25,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:25,118 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:25,118 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:25,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277127541] [2024-11-28 03:43:25,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277127541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:25,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261211787] [2024-11-28 03:43:25,215 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:25,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:25,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:25,217 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:25,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:43:25,309 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:25,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:25,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:25,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:25,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:25,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261211787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:25,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:25,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:43:25,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691002607] [2024-11-28 03:43:25,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:25,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:43:25,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:25,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:43:25,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:43:25,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:25,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 149 transitions, 1895 flow. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:25,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:25,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:25,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:25,864 INFO L124 PetriNetUnfolderBase]: 323/559 cut-off events. [2024-11-28 03:43:25,864 INFO L125 PetriNetUnfolderBase]: For 10060/10060 co-relation queries the response was YES. [2024-11-28 03:43:25,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 559 events. 323/559 cut-off events. For 10060/10060 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2330 event pairs, 63 based on Foata normal form. 6/565 useless extension candidates. Maximal degree in co-relation 4033. Up to 365 conditions per place. [2024-11-28 03:43:25,876 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 120 selfloop transitions, 56 changer transitions 6/183 dead transitions. [2024-11-28 03:43:25,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 183 transitions, 2671 flow [2024-11-28 03:43:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:43:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:43:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-11-28 03:43:25,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-28 03:43:25,880 INFO L175 Difference]: Start difference. First operand has 141 places, 149 transitions, 1895 flow. Second operand 11 states and 100 transitions. [2024-11-28 03:43:25,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 183 transitions, 2671 flow [2024-11-28 03:43:25,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 183 transitions, 2503 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-11-28 03:43:25,937 INFO L231 Difference]: Finished difference. Result has 142 places, 158 transitions, 2139 flow [2024-11-28 03:43:25,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2139, PETRI_PLACES=142, PETRI_TRANSITIONS=158} [2024-11-28 03:43:25,938 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 120 predicate places. [2024-11-28 03:43:25,939 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 158 transitions, 2139 flow [2024-11-28 03:43:25,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:25,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:25,940 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:25,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:43:26,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:43:26,144 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:26,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:26,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1768949732, now seen corresponding path program 13 times [2024-11-28 03:43:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:26,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169792345] [2024-11-28 03:43:26,145 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:26,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:26,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169792345] [2024-11-28 03:43:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169792345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839013625] [2024-11-28 03:43:26,246 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:26,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:26,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:26,249 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:26,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:43:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:26,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:26,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:26,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:26,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839013625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:26,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:26,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 03:43:26,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572530719] [2024-11-28 03:43:26,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:26,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:26,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:26,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:26,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:26,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 158 transitions, 2139 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:26,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:26,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:26,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:26,917 INFO L124 PetriNetUnfolderBase]: 338/575 cut-off events. [2024-11-28 03:43:26,917 INFO L125 PetriNetUnfolderBase]: For 10683/10683 co-relation queries the response was YES. [2024-11-28 03:43:26,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 575 events. 338/575 cut-off events. For 10683/10683 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2352 event pairs, 64 based on Foata normal form. 12/587 useless extension candidates. Maximal degree in co-relation 4227. Up to 375 conditions per place. [2024-11-28 03:43:26,930 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 124 selfloop transitions, 64 changer transitions 3/192 dead transitions. [2024-11-28 03:43:26,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 192 transitions, 2881 flow [2024-11-28 03:43:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:43:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 03:43:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-11-28 03:43:26,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-28 03:43:26,932 INFO L175 Difference]: Start difference. First operand has 142 places, 158 transitions, 2139 flow. Second operand 12 states and 110 transitions. [2024-11-28 03:43:26,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 192 transitions, 2881 flow [2024-11-28 03:43:26,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 192 transitions, 2646 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-11-28 03:43:26,999 INFO L231 Difference]: Finished difference. Result has 147 places, 166 transitions, 2266 flow [2024-11-28 03:43:27,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2266, PETRI_PLACES=147, PETRI_TRANSITIONS=166} [2024-11-28 03:43:27,001 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-11-28 03:43:27,001 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 166 transitions, 2266 flow [2024-11-28 03:43:27,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:27,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:27,002 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:27,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:27,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:43:27,203 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:27,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash 895209052, now seen corresponding path program 14 times [2024-11-28 03:43:27,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:27,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083674998] [2024-11-28 03:43:27,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:27,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:27,223 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:27,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083674998] [2024-11-28 03:43:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083674998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359201673] [2024-11-28 03:43:27,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:27,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:27,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:27,295 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:27,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:43:27,375 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:27,375 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:27,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:27,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:27,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:27,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359201673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:27,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 03:43:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219061270] [2024-11-28 03:43:27,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:27,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:27,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:27,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:27,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:27,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 2266 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:27,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:27,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:27,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:28,043 INFO L124 PetriNetUnfolderBase]: 337/571 cut-off events. [2024-11-28 03:43:28,044 INFO L125 PetriNetUnfolderBase]: For 10228/10228 co-relation queries the response was YES. [2024-11-28 03:43:28,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4336 conditions, 571 events. 337/571 cut-off events. For 10228/10228 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2297 event pairs, 66 based on Foata normal form. 8/579 useless extension candidates. Maximal degree in co-relation 4215. Up to 382 conditions per place. [2024-11-28 03:43:28,055 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 123 selfloop transitions, 71 changer transitions 0/195 dead transitions. [2024-11-28 03:43:28,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 195 transitions, 2866 flow [2024-11-28 03:43:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:43:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:43:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 145 transitions. [2024-11-28 03:43:28,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2024-11-28 03:43:28,061 INFO L175 Difference]: Start difference. First operand has 147 places, 166 transitions, 2266 flow. Second operand 17 states and 145 transitions. [2024-11-28 03:43:28,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 195 transitions, 2866 flow [2024-11-28 03:43:28,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 195 transitions, 2480 flow, removed 134 selfloop flow, removed 8 redundant places. [2024-11-28 03:43:28,130 INFO L231 Difference]: Finished difference. Result has 157 places, 172 transitions, 2175 flow [2024-11-28 03:43:28,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2175, PETRI_PLACES=157, PETRI_TRANSITIONS=172} [2024-11-28 03:43:28,135 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 135 predicate places. [2024-11-28 03:43:28,135 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 172 transitions, 2175 flow [2024-11-28 03:43:28,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:28,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:28,136 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:28,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:43:28,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:43:28,337 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:28,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1198730357, now seen corresponding path program 15 times [2024-11-28 03:43:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867164624] [2024-11-28 03:43:28,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:28,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:28,360 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:43:28,361 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:28,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867164624] [2024-11-28 03:43:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867164624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882985064] [2024-11-28 03:43:28,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:28,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:28,459 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:28,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:43:28,557 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:43:28,558 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:28,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:28,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:28,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:43:28,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882985064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:28,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:28,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-28 03:43:28,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817754595] [2024-11-28 03:43:28,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:28,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:43:28,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:28,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:43:28,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:43:28,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:28,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 172 transitions, 2175 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:28,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:28,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:28,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:29,310 INFO L124 PetriNetUnfolderBase]: 457/760 cut-off events. [2024-11-28 03:43:29,311 INFO L125 PetriNetUnfolderBase]: For 12808/12808 co-relation queries the response was YES. [2024-11-28 03:43:29,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5533 conditions, 760 events. 457/760 cut-off events. For 12808/12808 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3210 event pairs, 33 based on Foata normal form. 14/774 useless extension candidates. Maximal degree in co-relation 5412. Up to 245 conditions per place. [2024-11-28 03:43:29,333 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 100 selfloop transitions, 157 changer transitions 0/258 dead transitions. [2024-11-28 03:43:29,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 258 transitions, 3814 flow [2024-11-28 03:43:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:43:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:43:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 151 transitions. [2024-11-28 03:43:29,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4441176470588235 [2024-11-28 03:43:29,337 INFO L175 Difference]: Start difference. First operand has 157 places, 172 transitions, 2175 flow. Second operand 17 states and 151 transitions. [2024-11-28 03:43:29,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 258 transitions, 3814 flow [2024-11-28 03:43:29,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 3562 flow, removed 62 selfloop flow, removed 10 redundant places. [2024-11-28 03:43:29,413 INFO L231 Difference]: Finished difference. Result has 171 places, 232 transitions, 3430 flow [2024-11-28 03:43:29,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3430, PETRI_PLACES=171, PETRI_TRANSITIONS=232} [2024-11-28 03:43:29,416 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 149 predicate places. [2024-11-28 03:43:29,416 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 232 transitions, 3430 flow [2024-11-28 03:43:29,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:29,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:29,417 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:29,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:29,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:43:29,618 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:29,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:29,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1108567331, now seen corresponding path program 16 times [2024-11-28 03:43:29,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:29,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924275904] [2024-11-28 03:43:29,620 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:29,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:29,632 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:29,632 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:43:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924275904] [2024-11-28 03:43:29,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924275904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497430055] [2024-11-28 03:43:29,703 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:29,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:29,706 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:29,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:43:29,800 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:29,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:29,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:29,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:29,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:43:29,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497430055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:29,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:29,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-11-28 03:43:29,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585091001] [2024-11-28 03:43:29,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:29,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:43:29,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:29,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:43:29,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:43:29,911 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:29,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 232 transitions, 3430 flow. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:29,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:29,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:29,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:30,378 INFO L124 PetriNetUnfolderBase]: 457/764 cut-off events. [2024-11-28 03:43:30,378 INFO L125 PetriNetUnfolderBase]: For 13819/13819 co-relation queries the response was YES. [2024-11-28 03:43:30,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6160 conditions, 764 events. 457/764 cut-off events. For 13819/13819 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3276 event pairs, 52 based on Foata normal form. 4/768 useless extension candidates. Maximal degree in co-relation 6040. Up to 321 conditions per place. [2024-11-28 03:43:30,400 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 129 selfloop transitions, 117 changer transitions 2/249 dead transitions. [2024-11-28 03:43:30,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 249 transitions, 4137 flow [2024-11-28 03:43:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:43:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:43:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-11-28 03:43:30,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-11-28 03:43:30,402 INFO L175 Difference]: Start difference. First operand has 171 places, 232 transitions, 3430 flow. Second operand 11 states and 97 transitions. [2024-11-28 03:43:30,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 249 transitions, 4137 flow [2024-11-28 03:43:30,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 249 transitions, 3737 flow, removed 145 selfloop flow, removed 6 redundant places. [2024-11-28 03:43:30,518 INFO L231 Difference]: Finished difference. Result has 177 places, 232 transitions, 3280 flow [2024-11-28 03:43:30,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3280, PETRI_PLACES=177, PETRI_TRANSITIONS=232} [2024-11-28 03:43:30,520 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 155 predicate places. [2024-11-28 03:43:30,520 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 232 transitions, 3280 flow [2024-11-28 03:43:30,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:30,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:30,520 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:30,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:30,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:30,721 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:30,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:30,722 INFO L85 PathProgramCache]: Analyzing trace with hash 380837665, now seen corresponding path program 17 times [2024-11-28 03:43:30,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:30,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926857255] [2024-11-28 03:43:30,722 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:30,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:30,737 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:30,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926857255] [2024-11-28 03:43:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926857255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502010940] [2024-11-28 03:43:30,830 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:30,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:30,833 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:30,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:43:30,933 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:30,933 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:30,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:30,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:31,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502010940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:31,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:31,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 03:43:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867693677] [2024-11-28 03:43:31,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:31,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:43:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:31,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:43:31,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:43:31,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:31,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 232 transitions, 3280 flow. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:31,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:31,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:31,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:31,650 INFO L124 PetriNetUnfolderBase]: 499/826 cut-off events. [2024-11-28 03:43:31,650 INFO L125 PetriNetUnfolderBase]: For 13889/13889 co-relation queries the response was YES. [2024-11-28 03:43:31,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6512 conditions, 826 events. 499/826 cut-off events. For 13889/13889 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3562 event pairs, 54 based on Foata normal form. 4/830 useless extension candidates. Maximal degree in co-relation 6427. Up to 337 conditions per place. [2024-11-28 03:43:31,667 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 142 selfloop transitions, 127 changer transitions 4/274 dead transitions. [2024-11-28 03:43:31,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 274 transitions, 4422 flow [2024-11-28 03:43:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:43:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 03:43:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-11-28 03:43:31,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-11-28 03:43:31,669 INFO L175 Difference]: Start difference. First operand has 177 places, 232 transitions, 3280 flow. Second operand 12 states and 101 transitions. [2024-11-28 03:43:31,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 274 transitions, 4422 flow [2024-11-28 03:43:31,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 274 transitions, 4167 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-11-28 03:43:31,791 INFO L231 Difference]: Finished difference. Result has 184 places, 253 transitions, 3752 flow [2024-11-28 03:43:31,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3752, PETRI_PLACES=184, PETRI_TRANSITIONS=253} [2024-11-28 03:43:31,793 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 162 predicate places. [2024-11-28 03:43:31,793 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 253 transitions, 3752 flow [2024-11-28 03:43:31,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:31,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:31,793 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:31,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:31,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:31,999 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:32,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1940283779, now seen corresponding path program 18 times [2024-11-28 03:43:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:32,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170750114] [2024-11-28 03:43:32,003 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:32,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:32,018 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:32,018 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:32,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:32,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170750114] [2024-11-28 03:43:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170750114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937062169] [2024-11-28 03:43:32,111 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:32,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:32,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:32,114 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:32,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:43:32,202 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:32,203 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:32,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:32,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:32,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:32,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937062169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:32,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:43:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121901129] [2024-11-28 03:43:32,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:32,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:43:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:32,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:43:32,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:43:32,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:32,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 253 transitions, 3752 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:32,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:32,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:32,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:33,261 INFO L124 PetriNetUnfolderBase]: 589/978 cut-off events. [2024-11-28 03:43:33,262 INFO L125 PetriNetUnfolderBase]: For 19983/19983 co-relation queries the response was YES. [2024-11-28 03:43:33,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8003 conditions, 978 events. 589/978 cut-off events. For 19983/19983 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4440 event pairs, 37 based on Foata normal form. 8/986 useless extension candidates. Maximal degree in co-relation 7912. Up to 325 conditions per place. [2024-11-28 03:43:33,280 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 164 selfloop transitions, 172 changer transitions 0/337 dead transitions. [2024-11-28 03:43:33,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 337 transitions, 5502 flow [2024-11-28 03:43:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:43:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 03:43:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 191 transitions. [2024-11-28 03:43:33,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4152173913043478 [2024-11-28 03:43:33,282 INFO L175 Difference]: Start difference. First operand has 184 places, 253 transitions, 3752 flow. Second operand 23 states and 191 transitions. [2024-11-28 03:43:33,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 337 transitions, 5502 flow [2024-11-28 03:43:33,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 337 transitions, 5349 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-11-28 03:43:33,434 INFO L231 Difference]: Finished difference. Result has 208 places, 301 transitions, 4929 flow [2024-11-28 03:43:33,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4929, PETRI_PLACES=208, PETRI_TRANSITIONS=301} [2024-11-28 03:43:33,435 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 186 predicate places. [2024-11-28 03:43:33,435 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 301 transitions, 4929 flow [2024-11-28 03:43:33,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:33,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:33,435 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:33,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:43:33,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:33,636 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:33,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2098848131, now seen corresponding path program 19 times [2024-11-28 03:43:33,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:33,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44819665] [2024-11-28 03:43:33,637 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:33,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44819665] [2024-11-28 03:43:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44819665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111554851] [2024-11-28 03:43:33,748 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:33,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:33,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:33,751 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:33,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:43:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:33,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:33,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:33,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:34,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111554851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:34,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:34,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:43:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249102212] [2024-11-28 03:43:34,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:34,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:43:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:34,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:43:34,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:43:34,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:34,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 301 transitions, 4929 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:34,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:34,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:34,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:34,865 INFO L124 PetriNetUnfolderBase]: 634/1049 cut-off events. [2024-11-28 03:43:34,865 INFO L125 PetriNetUnfolderBase]: For 32361/32361 co-relation queries the response was YES. [2024-11-28 03:43:34,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9363 conditions, 1049 events. 634/1049 cut-off events. For 32361/32361 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4817 event pairs, 150 based on Foata normal form. 24/1073 useless extension candidates. Maximal degree in co-relation 9210. Up to 901 conditions per place. [2024-11-28 03:43:34,879 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 294 selfloop transitions, 59 changer transitions 0/354 dead transitions. [2024-11-28 03:43:34,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 354 transitions, 6545 flow [2024-11-28 03:43:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:43:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 03:43:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-11-28 03:43:34,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-11-28 03:43:34,881 INFO L175 Difference]: Start difference. First operand has 208 places, 301 transitions, 4929 flow. Second operand 19 states and 164 transitions. [2024-11-28 03:43:34,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 354 transitions, 6545 flow [2024-11-28 03:43:35,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 354 transitions, 6358 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-11-28 03:43:35,093 INFO L231 Difference]: Finished difference. Result has 230 places, 326 transitions, 5656 flow [2024-11-28 03:43:35,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4742, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5656, PETRI_PLACES=230, PETRI_TRANSITIONS=326} [2024-11-28 03:43:35,093 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 208 predicate places. [2024-11-28 03:43:35,094 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 326 transitions, 5656 flow [2024-11-28 03:43:35,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:35,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:35,094 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:35,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 03:43:35,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:35,295 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:35,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:35,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2129017773, now seen corresponding path program 20 times [2024-11-28 03:43:35,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:35,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286594590] [2024-11-28 03:43:35,295 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:35,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:35,309 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:35,310 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:35,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286594590] [2024-11-28 03:43:35,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286594590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:35,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869323949] [2024-11-28 03:43:35,412 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:35,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:35,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:35,414 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:35,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:43:35,505 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:35,506 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:35,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:35,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:35,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:35,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869323949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:35,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:35,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 03:43:35,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060123511] [2024-11-28 03:43:35,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:35,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:35,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:35,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:35,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:35,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:35,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 326 transitions, 5656 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:35,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:35,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:35,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:36,388 INFO L124 PetriNetUnfolderBase]: 683/1124 cut-off events. [2024-11-28 03:43:36,388 INFO L125 PetriNetUnfolderBase]: For 45705/45705 co-relation queries the response was YES. [2024-11-28 03:43:36,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10857 conditions, 1124 events. 683/1124 cut-off events. For 45705/45705 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5198 event pairs, 86 based on Foata normal form. 10/1134 useless extension candidates. Maximal degree in co-relation 10710. Up to 686 conditions per place. [2024-11-28 03:43:36,405 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 228 selfloop transitions, 149 changer transitions 0/378 dead transitions. [2024-11-28 03:43:36,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 378 transitions, 7521 flow [2024-11-28 03:43:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:43:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:43:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 149 transitions. [2024-11-28 03:43:36,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-11-28 03:43:36,408 INFO L175 Difference]: Start difference. First operand has 230 places, 326 transitions, 5656 flow. Second operand 17 states and 149 transitions. [2024-11-28 03:43:36,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 378 transitions, 7521 flow [2024-11-28 03:43:36,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 378 transitions, 6797 flow, removed 343 selfloop flow, removed 6 redundant places. [2024-11-28 03:43:36,719 INFO L231 Difference]: Finished difference. Result has 244 places, 351 transitions, 6196 flow [2024-11-28 03:43:36,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5072, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6196, PETRI_PLACES=244, PETRI_TRANSITIONS=351} [2024-11-28 03:43:36,720 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 222 predicate places. [2024-11-28 03:43:36,720 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 351 transitions, 6196 flow [2024-11-28 03:43:36,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:36,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:36,721 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:36,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:36,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:36,922 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:36,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash -328151823, now seen corresponding path program 21 times [2024-11-28 03:43:36,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:36,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177757092] [2024-11-28 03:43:36,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:36,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:36,934 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:36,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177757092] [2024-11-28 03:43:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177757092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:37,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311334327] [2024-11-28 03:43:37,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:37,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:37,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:37,021 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:37,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:43:37,109 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:37,109 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:37,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:37,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:37,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:37,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311334327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:37,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:37,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 03:43:37,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310009384] [2024-11-28 03:43:37,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:37,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:37,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:37,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:37,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:37,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:37,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 351 transitions, 6196 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:37,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:37,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:37,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:37,855 INFO L124 PetriNetUnfolderBase]: 680/1123 cut-off events. [2024-11-28 03:43:37,855 INFO L125 PetriNetUnfolderBase]: For 40354/40354 co-relation queries the response was YES. [2024-11-28 03:43:37,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10793 conditions, 1123 events. 680/1123 cut-off events. For 40354/40354 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5244 event pairs, 86 based on Foata normal form. 6/1129 useless extension candidates. Maximal degree in co-relation 10642. Up to 684 conditions per place. [2024-11-28 03:43:37,878 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 223 selfloop transitions, 141 changer transitions 3/368 dead transitions. [2024-11-28 03:43:37,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 368 transitions, 7238 flow [2024-11-28 03:43:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:43:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 03:43:37,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 106 transitions. [2024-11-28 03:43:37,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-28 03:43:37,879 INFO L175 Difference]: Start difference. First operand has 244 places, 351 transitions, 6196 flow. Second operand 12 states and 106 transitions. [2024-11-28 03:43:37,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 368 transitions, 7238 flow [2024-11-28 03:43:38,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 368 transitions, 6660 flow, removed 235 selfloop flow, removed 18 redundant places. [2024-11-28 03:43:38,138 INFO L231 Difference]: Finished difference. Result has 238 places, 348 transitions, 5898 flow [2024-11-28 03:43:38,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5599, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5898, PETRI_PLACES=238, PETRI_TRANSITIONS=348} [2024-11-28 03:43:38,139 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 216 predicate places. [2024-11-28 03:43:38,139 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 348 transitions, 5898 flow [2024-11-28 03:43:38,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:38,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:38,139 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:38,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:43:38,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 03:43:38,340 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:38,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash -89207537, now seen corresponding path program 22 times [2024-11-28 03:43:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:38,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796059614] [2024-11-28 03:43:38,341 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:38,352 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:38,352 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:38,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796059614] [2024-11-28 03:43:38,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796059614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806748384] [2024-11-28 03:43:38,430 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:38,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:38,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:38,433 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:38,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:43:38,534 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:38,535 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:38,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:38,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:38,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806748384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:38,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:38,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 03:43:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169139655] [2024-11-28 03:43:38,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:38,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:43:38,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:38,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:43:38,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:43:38,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:38,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 348 transitions, 5898 flow. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:38,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:38,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:38,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:39,258 INFO L124 PetriNetUnfolderBase]: 721/1182 cut-off events. [2024-11-28 03:43:39,258 INFO L125 PetriNetUnfolderBase]: For 37749/37749 co-relation queries the response was YES. [2024-11-28 03:43:39,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11098 conditions, 1182 events. 721/1182 cut-off events. For 37749/37749 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5545 event pairs, 158 based on Foata normal form. 4/1186 useless extension candidates. Maximal degree in co-relation 10958. Up to 1000 conditions per place. [2024-11-28 03:43:39,274 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 304 selfloop transitions, 78 changer transitions 4/387 dead transitions. [2024-11-28 03:43:39,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 387 transitions, 7405 flow [2024-11-28 03:43:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:43:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 03:43:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-11-28 03:43:39,276 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-11-28 03:43:39,276 INFO L175 Difference]: Start difference. First operand has 238 places, 348 transitions, 5898 flow. Second operand 12 states and 101 transitions. [2024-11-28 03:43:39,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 387 transitions, 7405 flow [2024-11-28 03:43:39,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 387 transitions, 7040 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-11-28 03:43:39,577 INFO L231 Difference]: Finished difference. Result has 241 places, 368 transitions, 6252 flow [2024-11-28 03:43:39,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5581, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6252, PETRI_PLACES=241, PETRI_TRANSITIONS=368} [2024-11-28 03:43:39,578 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 219 predicate places. [2024-11-28 03:43:39,579 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 368 transitions, 6252 flow [2024-11-28 03:43:39,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:39,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:39,579 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:39,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 03:43:39,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 03:43:39,780 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:39,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:39,781 INFO L85 PathProgramCache]: Analyzing trace with hash 772583161, now seen corresponding path program 23 times [2024-11-28 03:43:39,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:39,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646392438] [2024-11-28 03:43:39,781 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:39,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:39,789 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:39,789 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:39,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646392438] [2024-11-28 03:43:39,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646392438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:39,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554361995] [2024-11-28 03:43:39,866 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:39,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:39,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:39,869 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:39,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:43:39,964 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:39,964 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:39,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:39,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:40,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:40,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554361995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:40,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:40,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-28 03:43:40,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132807616] [2024-11-28 03:43:40,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:40,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:43:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:40,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:43:40,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:43:40,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:40,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 368 transitions, 6252 flow. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:40,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:40,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:40,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:40,575 INFO L124 PetriNetUnfolderBase]: 721/1190 cut-off events. [2024-11-28 03:43:40,575 INFO L125 PetriNetUnfolderBase]: For 40173/40173 co-relation queries the response was YES. [2024-11-28 03:43:40,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11214 conditions, 1190 events. 721/1190 cut-off events. For 40173/40173 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5617 event pairs, 102 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 11068. Up to 771 conditions per place. [2024-11-28 03:43:40,599 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 277 selfloop transitions, 102 changer transitions 5/385 dead transitions. [2024-11-28 03:43:40,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 385 transitions, 7295 flow [2024-11-28 03:43:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:43:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:43:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-11-28 03:43:40,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-28 03:43:40,600 INFO L175 Difference]: Start difference. First operand has 241 places, 368 transitions, 6252 flow. Second operand 7 states and 66 transitions. [2024-11-28 03:43:40,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 385 transitions, 7295 flow [2024-11-28 03:43:40,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 385 transitions, 7165 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-11-28 03:43:40,798 INFO L231 Difference]: Finished difference. Result has 245 places, 367 transitions, 6321 flow [2024-11-28 03:43:40,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6122, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6321, PETRI_PLACES=245, PETRI_TRANSITIONS=367} [2024-11-28 03:43:40,799 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 223 predicate places. [2024-11-28 03:43:40,799 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 367 transitions, 6321 flow [2024-11-28 03:43:40,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:40,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:40,800 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:40,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 03:43:41,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 03:43:41,000 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:41,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash 533493270, now seen corresponding path program 24 times [2024-11-28 03:43:41,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:41,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780612976] [2024-11-28 03:43:41,001 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:41,011 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:41,011 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780612976] [2024-11-28 03:43:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780612976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791418354] [2024-11-28 03:43:41,095 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:41,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:41,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:41,098 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:41,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:43:41,187 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:41,188 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:41,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:41,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:41,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:41,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791418354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:41,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:41,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 03:43:41,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084926921] [2024-11-28 03:43:41,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:41,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:41,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:41,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:41,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:41,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:41,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 367 transitions, 6321 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:41,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:41,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:41,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:42,105 INFO L124 PetriNetUnfolderBase]: 775/1264 cut-off events. [2024-11-28 03:43:42,106 INFO L125 PetriNetUnfolderBase]: For 47022/47022 co-relation queries the response was YES. [2024-11-28 03:43:42,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12177 conditions, 1264 events. 775/1264 cut-off events. For 47022/47022 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5939 event pairs, 37 based on Foata normal form. 22/1286 useless extension candidates. Maximal degree in co-relation 11976. Up to 864 conditions per place. [2024-11-28 03:43:42,123 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 313 selfloop transitions, 111 changer transitions 0/425 dead transitions. [2024-11-28 03:43:42,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 425 transitions, 8199 flow [2024-11-28 03:43:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:43:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 03:43:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 138 transitions. [2024-11-28 03:43:42,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-28 03:43:42,125 INFO L175 Difference]: Start difference. First operand has 245 places, 367 transitions, 6321 flow. Second operand 16 states and 138 transitions. [2024-11-28 03:43:42,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 425 transitions, 8199 flow [2024-11-28 03:43:42,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 425 transitions, 7979 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-28 03:43:42,362 INFO L231 Difference]: Finished difference. Result has 258 places, 397 transitions, 7160 flow [2024-11-28 03:43:42,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7160, PETRI_PLACES=258, PETRI_TRANSITIONS=397} [2024-11-28 03:43:42,363 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 236 predicate places. [2024-11-28 03:43:42,364 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 397 transitions, 7160 flow [2024-11-28 03:43:42,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:42,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:42,364 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:42,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:42,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:42,565 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:42,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1382461485, now seen corresponding path program 25 times [2024-11-28 03:43:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:42,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207953131] [2024-11-28 03:43:42,565 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:42,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207953131] [2024-11-28 03:43:42,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207953131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:42,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18356535] [2024-11-28 03:43:42,668 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:42,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:42,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:42,670 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:42,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:43:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:42,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:42,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:42,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:42,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18356535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:42,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:42,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:43:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61668920] [2024-11-28 03:43:42,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:42,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:43:42,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:42,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:43:42,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:43:42,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:42,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 397 transitions, 7160 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:42,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:42,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:42,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:43,580 INFO L124 PetriNetUnfolderBase]: 771/1252 cut-off events. [2024-11-28 03:43:43,580 INFO L125 PetriNetUnfolderBase]: For 50243/50243 co-relation queries the response was YES. [2024-11-28 03:43:43,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12400 conditions, 1252 events. 771/1252 cut-off events. For 50243/50243 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5839 event pairs, 115 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 12242. Up to 854 conditions per place. [2024-11-28 03:43:43,595 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 288 selfloop transitions, 118 changer transitions 4/411 dead transitions. [2024-11-28 03:43:43,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 411 transitions, 8257 flow [2024-11-28 03:43:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:43:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:43:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 85 transitions. [2024-11-28 03:43:43,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-28 03:43:43,598 INFO L175 Difference]: Start difference. First operand has 258 places, 397 transitions, 7160 flow. Second operand 10 states and 85 transitions. [2024-11-28 03:43:43,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 411 transitions, 8257 flow [2024-11-28 03:43:43,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 411 transitions, 7671 flow, removed 237 selfloop flow, removed 6 redundant places. [2024-11-28 03:43:43,835 INFO L231 Difference]: Finished difference. Result has 261 places, 394 transitions, 6770 flow [2024-11-28 03:43:43,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6564, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6770, PETRI_PLACES=261, PETRI_TRANSITIONS=394} [2024-11-28 03:43:43,836 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 239 predicate places. [2024-11-28 03:43:43,836 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 394 transitions, 6770 flow [2024-11-28 03:43:43,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:43,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:43,836 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:43,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 03:43:44,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 03:43:44,037 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:44,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1165384422, now seen corresponding path program 26 times [2024-11-28 03:43:44,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:44,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229118624] [2024-11-28 03:43:44,038 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:44,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:44,048 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:44,049 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229118624] [2024-11-28 03:43:44,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229118624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376743709] [2024-11-28 03:43:44,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:44,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:44,140 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:44,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:43:44,221 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:44,221 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:44,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:44,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:44,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:43:44,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376743709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:44,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:44,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-28 03:43:44,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021865961] [2024-11-28 03:43:44,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:44,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:43:44,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:44,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:43:44,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:43:44,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:44,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 394 transitions, 6770 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:44,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:44,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:44,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:44,989 INFO L124 PetriNetUnfolderBase]: 854/1369 cut-off events. [2024-11-28 03:43:44,989 INFO L125 PetriNetUnfolderBase]: For 55082/55082 co-relation queries the response was YES. [2024-11-28 03:43:45,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13527 conditions, 1369 events. 854/1369 cut-off events. For 55082/55082 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6453 event pairs, 35 based on Foata normal form. 10/1379 useless extension candidates. Maximal degree in co-relation 13330. Up to 864 conditions per place. [2024-11-28 03:43:45,008 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 301 selfloop transitions, 168 changer transitions 0/470 dead transitions. [2024-11-28 03:43:45,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 470 transitions, 9205 flow [2024-11-28 03:43:45,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:43:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:43:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 148 transitions. [2024-11-28 03:43:45,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43529411764705883 [2024-11-28 03:43:45,014 INFO L175 Difference]: Start difference. First operand has 261 places, 394 transitions, 6770 flow. Second operand 17 states and 148 transitions. [2024-11-28 03:43:45,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 470 transitions, 9205 flow [2024-11-28 03:43:45,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 470 transitions, 8963 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-28 03:43:45,307 INFO L231 Difference]: Finished difference. Result has 273 places, 447 transitions, 8423 flow [2024-11-28 03:43:45,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6504, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8423, PETRI_PLACES=273, PETRI_TRANSITIONS=447} [2024-11-28 03:43:45,308 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 251 predicate places. [2024-11-28 03:43:45,308 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 447 transitions, 8423 flow [2024-11-28 03:43:45,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:45,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:45,309 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:45,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 03:43:45,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 03:43:45,509 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:45,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1029884786, now seen corresponding path program 27 times [2024-11-28 03:43:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111646942] [2024-11-28 03:43:45,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:45,520 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:45,520 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:45,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:45,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111646942] [2024-11-28 03:43:45,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111646942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:45,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473532477] [2024-11-28 03:43:45,625 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:45,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:45,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:45,628 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:45,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:43:45,723 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:45,723 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:45,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:45,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:45,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:45,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473532477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:45,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:45,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:43:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298777379] [2024-11-28 03:43:45,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:45,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:43:45,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:45,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:43:45,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:43:45,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:45,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 447 transitions, 8423 flow. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:45,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:45,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:45,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:46,981 INFO L124 PetriNetUnfolderBase]: 904/1451 cut-off events. [2024-11-28 03:43:46,981 INFO L125 PetriNetUnfolderBase]: For 59834/59834 co-relation queries the response was YES. [2024-11-28 03:43:46,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14816 conditions, 1451 events. 904/1451 cut-off events. For 59834/59834 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6947 event pairs, 37 based on Foata normal form. 6/1457 useless extension candidates. Maximal degree in co-relation 14537. Up to 982 conditions per place. [2024-11-28 03:43:47,002 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 364 selfloop transitions, 143 changer transitions 0/508 dead transitions. [2024-11-28 03:43:47,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 508 transitions, 10221 flow [2024-11-28 03:43:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:43:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 03:43:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 183 transitions. [2024-11-28 03:43:47,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3978260869565217 [2024-11-28 03:43:47,004 INFO L175 Difference]: Start difference. First operand has 273 places, 447 transitions, 8423 flow. Second operand 23 states and 183 transitions. [2024-11-28 03:43:47,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 508 transitions, 10221 flow [2024-11-28 03:43:47,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 508 transitions, 9429 flow, removed 389 selfloop flow, removed 3 redundant places. [2024-11-28 03:43:47,376 INFO L231 Difference]: Finished difference. Result has 300 places, 480 transitions, 8628 flow [2024-11-28 03:43:47,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7703, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8628, PETRI_PLACES=300, PETRI_TRANSITIONS=480} [2024-11-28 03:43:47,377 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 278 predicate places. [2024-11-28 03:43:47,377 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 480 transitions, 8628 flow [2024-11-28 03:43:47,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:47,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:47,377 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:47,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:43:47,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:47,578 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:47,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1327163176, now seen corresponding path program 28 times [2024-11-28 03:43:47,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:47,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949611552] [2024-11-28 03:43:47,579 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:47,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:47,593 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:47,593 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:47,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949611552] [2024-11-28 03:43:47,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949611552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:47,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135901924] [2024-11-28 03:43:47,688 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:47,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:47,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:47,692 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:47,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:43:47,803 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:47,803 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:47,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:47,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:47,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:47,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135901924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:47,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:47,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 03:43:47,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166891720] [2024-11-28 03:43:47,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:47,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:43:47,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:47,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:43:47,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:43:47,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:47,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 480 transitions, 8628 flow. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:47,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:47,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:47,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:48,655 INFO L124 PetriNetUnfolderBase]: 928/1493 cut-off events. [2024-11-28 03:43:48,655 INFO L125 PetriNetUnfolderBase]: For 45523/45523 co-relation queries the response was YES. [2024-11-28 03:43:48,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14509 conditions, 1493 events. 928/1493 cut-off events. For 45523/45523 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7267 event pairs, 56 based on Foata normal form. 12/1505 useless extension candidates. Maximal degree in co-relation 14243. Up to 920 conditions per place. [2024-11-28 03:43:48,675 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 358 selfloop transitions, 154 changer transitions 5/518 dead transitions. [2024-11-28 03:43:48,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 518 transitions, 10346 flow [2024-11-28 03:43:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:43:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:43:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 114 transitions. [2024-11-28 03:43:48,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-11-28 03:43:48,676 INFO L175 Difference]: Start difference. First operand has 300 places, 480 transitions, 8628 flow. Second operand 13 states and 114 transitions. [2024-11-28 03:43:48,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 518 transitions, 10346 flow [2024-11-28 03:43:48,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 518 transitions, 10074 flow, removed 77 selfloop flow, removed 10 redundant places. [2024-11-28 03:43:48,984 INFO L231 Difference]: Finished difference. Result has 305 places, 492 transitions, 9183 flow [2024-11-28 03:43:48,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8342, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9183, PETRI_PLACES=305, PETRI_TRANSITIONS=492} [2024-11-28 03:43:48,985 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 283 predicate places. [2024-11-28 03:43:48,985 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 492 transitions, 9183 flow [2024-11-28 03:43:48,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:48,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:48,986 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:48,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:49,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:49,187 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:49,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2105464902, now seen corresponding path program 29 times [2024-11-28 03:43:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:49,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125526955] [2024-11-28 03:43:49,188 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:49,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:49,204 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:49,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:43:49,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:49,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125526955] [2024-11-28 03:43:49,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125526955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326037026] [2024-11-28 03:43:49,273 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:49,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:49,276 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:49,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:43:49,360 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:49,360 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:49,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:49,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:49,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:43:49,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326037026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:49,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:49,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-11-28 03:43:49,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388911780] [2024-11-28 03:43:49,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:49,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:43:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:49,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:43:49,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:43:49,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:49,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 492 transitions, 9183 flow. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:49,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:49,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:49,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:50,141 INFO L124 PetriNetUnfolderBase]: 925/1487 cut-off events. [2024-11-28 03:43:50,141 INFO L125 PetriNetUnfolderBase]: For 47676/47676 co-relation queries the response was YES. [2024-11-28 03:43:50,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14768 conditions, 1487 events. 925/1487 cut-off events. For 47676/47676 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7196 event pairs, 58 based on Foata normal form. 6/1493 useless extension candidates. Maximal degree in co-relation 14520. Up to 1069 conditions per place. [2024-11-28 03:43:50,161 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 395 selfloop transitions, 110 changer transitions 3/509 dead transitions. [2024-11-28 03:43:50,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 509 transitions, 10442 flow [2024-11-28 03:43:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:43:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:43:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-11-28 03:43:50,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-28 03:43:50,163 INFO L175 Difference]: Start difference. First operand has 305 places, 492 transitions, 9183 flow. Second operand 11 states and 96 transitions. [2024-11-28 03:43:50,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 509 transitions, 10442 flow [2024-11-28 03:43:50,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 509 transitions, 9989 flow, removed 168 selfloop flow, removed 4 redundant places. [2024-11-28 03:43:50,500 INFO L231 Difference]: Finished difference. Result has 309 places, 492 transitions, 8990 flow [2024-11-28 03:43:50,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8787, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8990, PETRI_PLACES=309, PETRI_TRANSITIONS=492} [2024-11-28 03:43:50,501 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 287 predicate places. [2024-11-28 03:43:50,501 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 492 transitions, 8990 flow [2024-11-28 03:43:50,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:50,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:50,501 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:50,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 03:43:50,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 03:43:50,702 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:50,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1517719580, now seen corresponding path program 30 times [2024-11-28 03:43:50,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642245100] [2024-11-28 03:43:50,703 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:50,716 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:50,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642245100] [2024-11-28 03:43:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642245100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269722615] [2024-11-28 03:43:50,803 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:50,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:50,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:50,808 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:50,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:43:50,900 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:43:50,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:50,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:50,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:50,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269722615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:51,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 03:43:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420258879] [2024-11-28 03:43:51,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:51,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:43:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:51,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:43:51,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:43:51,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:51,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 492 transitions, 8990 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:51,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:51,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:51,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:51,953 INFO L124 PetriNetUnfolderBase]: 918/1477 cut-off events. [2024-11-28 03:43:51,953 INFO L125 PetriNetUnfolderBase]: For 40561/40561 co-relation queries the response was YES. [2024-11-28 03:43:51,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14260 conditions, 1477 events. 918/1477 cut-off events. For 40561/40561 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7099 event pairs, 52 based on Foata normal form. 9/1486 useless extension candidates. Maximal degree in co-relation 14138. Up to 928 conditions per place. [2024-11-28 03:43:51,974 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 366 selfloop transitions, 144 changer transitions 1/512 dead transitions. [2024-11-28 03:43:51,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 512 transitions, 10212 flow [2024-11-28 03:43:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:43:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:43:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 114 transitions. [2024-11-28 03:43:51,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-11-28 03:43:51,976 INFO L175 Difference]: Start difference. First operand has 309 places, 492 transitions, 8990 flow. Second operand 13 states and 114 transitions. [2024-11-28 03:43:51,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 512 transitions, 10212 flow [2024-11-28 03:43:52,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 512 transitions, 10113 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 03:43:52,291 INFO L231 Difference]: Finished difference. Result has 317 places, 489 transitions, 9144 flow [2024-11-28 03:43:52,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8864, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9144, PETRI_PLACES=317, PETRI_TRANSITIONS=489} [2024-11-28 03:43:52,291 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 295 predicate places. [2024-11-28 03:43:52,291 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 489 transitions, 9144 flow [2024-11-28 03:43:52,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:52,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:52,292 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:52,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 03:43:52,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-28 03:43:52,492 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:52,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash 605311886, now seen corresponding path program 31 times [2024-11-28 03:43:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:52,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189562303] [2024-11-28 03:43:52,493 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:52,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189562303] [2024-11-28 03:43:52,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189562303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925998792] [2024-11-28 03:43:52,591 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:52,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:52,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:52,593 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:52,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:43:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:52,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:52,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:52,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:52,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925998792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:52,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:52,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:43:52,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164122004] [2024-11-28 03:43:52,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:52,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:43:52,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:52,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:43:52,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:43:52,818 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:52,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 489 transitions, 9144 flow. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:52,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:52,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:52,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:53,701 INFO L124 PetriNetUnfolderBase]: 961/1549 cut-off events. [2024-11-28 03:43:53,702 INFO L125 PetriNetUnfolderBase]: For 44170/44170 co-relation queries the response was YES. [2024-11-28 03:43:53,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15080 conditions, 1549 events. 961/1549 cut-off events. For 44170/44170 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7582 event pairs, 49 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 14957. Up to 1064 conditions per place. [2024-11-28 03:43:53,721 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 398 selfloop transitions, 135 changer transitions 0/534 dead transitions. [2024-11-28 03:43:53,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 534 transitions, 10849 flow [2024-11-28 03:43:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:43:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 03:43:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 114 transitions. [2024-11-28 03:43:53,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-11-28 03:43:53,722 INFO L175 Difference]: Start difference. First operand has 317 places, 489 transitions, 9144 flow. Second operand 14 states and 114 transitions. [2024-11-28 03:43:53,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 534 transitions, 10849 flow [2024-11-28 03:43:54,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 534 transitions, 10596 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-11-28 03:43:54,029 INFO L231 Difference]: Finished difference. Result has 325 places, 514 transitions, 9689 flow [2024-11-28 03:43:54,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8921, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9689, PETRI_PLACES=325, PETRI_TRANSITIONS=514} [2024-11-28 03:43:54,030 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 303 predicate places. [2024-11-28 03:43:54,030 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 514 transitions, 9689 flow [2024-11-28 03:43:54,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:54,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:54,031 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:54,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 03:43:54,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 03:43:54,231 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:54,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:54,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2035930194, now seen corresponding path program 32 times [2024-11-28 03:43:54,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:54,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178328978] [2024-11-28 03:43:54,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:54,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:54,243 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:54,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:54,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178328978] [2024-11-28 03:43:54,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178328978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:54,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241017467] [2024-11-28 03:43:54,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:54,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:54,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:54,332 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:54,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 03:43:54,421 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:54,421 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:54,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:43:54,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:54,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:54,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241017467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:54,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:54,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 03:43:54,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897600274] [2024-11-28 03:43:54,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:54,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:43:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:54,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:43:54,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:43:54,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:54,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 514 transitions, 9689 flow. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:54,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:54,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:54,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:55,348 INFO L124 PetriNetUnfolderBase]: 1012/1631 cut-off events. [2024-11-28 03:43:55,348 INFO L125 PetriNetUnfolderBase]: For 47053/47053 co-relation queries the response was YES. [2024-11-28 03:43:55,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16049 conditions, 1631 events. 1012/1631 cut-off events. For 47053/47053 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8038 event pairs, 12 based on Foata normal form. 4/1635 useless extension candidates. Maximal degree in co-relation 15920. Up to 813 conditions per place. [2024-11-28 03:43:55,439 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 354 selfloop transitions, 210 changer transitions 0/565 dead transitions. [2024-11-28 03:43:55,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 565 transitions, 11669 flow [2024-11-28 03:43:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:43:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:43:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-11-28 03:43:55,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-28 03:43:55,442 INFO L175 Difference]: Start difference. First operand has 325 places, 514 transitions, 9689 flow. Second operand 10 states and 90 transitions. [2024-11-28 03:43:55,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 565 transitions, 11669 flow [2024-11-28 03:43:55,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 565 transitions, 11348 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-11-28 03:43:55,863 INFO L231 Difference]: Finished difference. Result has 326 places, 540 transitions, 10397 flow [2024-11-28 03:43:55,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9353, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10397, PETRI_PLACES=326, PETRI_TRANSITIONS=540} [2024-11-28 03:43:55,864 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 304 predicate places. [2024-11-28 03:43:55,864 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 540 transitions, 10397 flow [2024-11-28 03:43:55,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:55,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:55,865 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:55,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 03:43:56,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:56,066 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:56,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash 798697251, now seen corresponding path program 33 times [2024-11-28 03:43:56,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:56,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213471256] [2024-11-28 03:43:56,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:56,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:56,097 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:56,097 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:56,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:56,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213471256] [2024-11-28 03:43:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213471256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:56,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350987561] [2024-11-28 03:43:56,508 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:56,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:56,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:56,511 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:56,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:43:56,609 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:43:56,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:56,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:43:56,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:56,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:57,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350987561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:57,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:57,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-28 03:43:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703727883] [2024-11-28 03:43:57,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:57,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:43:57,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:57,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:43:57,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:43:57,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:43:57,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 540 transitions, 10397 flow. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:57,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:43:57,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:43:57,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:43:58,384 INFO L124 PetriNetUnfolderBase]: 1119/1860 cut-off events. [2024-11-28 03:43:58,384 INFO L125 PetriNetUnfolderBase]: For 57738/57738 co-relation queries the response was YES. [2024-11-28 03:43:58,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18444 conditions, 1860 events. 1119/1860 cut-off events. For 57738/57738 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9826 event pairs, 23 based on Foata normal form. 2/1862 useless extension candidates. Maximal degree in co-relation 18315. Up to 1519 conditions per place. [2024-11-28 03:43:58,423 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 515 selfloop transitions, 95 changer transitions 17/628 dead transitions. [2024-11-28 03:43:58,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 628 transitions, 12982 flow [2024-11-28 03:43:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:43:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 03:43:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-11-28 03:43:58,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 03:43:58,424 INFO L175 Difference]: Start difference. First operand has 326 places, 540 transitions, 10397 flow. Second operand 12 states and 120 transitions. [2024-11-28 03:43:58,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 628 transitions, 12982 flow [2024-11-28 03:43:58,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 628 transitions, 12587 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-11-28 03:43:58,868 INFO L231 Difference]: Finished difference. Result has 338 places, 581 transitions, 11258 flow [2024-11-28 03:43:58,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10062, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11258, PETRI_PLACES=338, PETRI_TRANSITIONS=581} [2024-11-28 03:43:58,869 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 316 predicate places. [2024-11-28 03:43:58,870 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 581 transitions, 11258 flow [2024-11-28 03:43:58,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:58,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:43:58,870 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:58,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 03:43:59,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 03:43:59,075 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:43:59,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash -992121153, now seen corresponding path program 34 times [2024-11-28 03:43:59,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023957814] [2024-11-28 03:43:59,077 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:59,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:59,092 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:59,092 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:59,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:59,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023957814] [2024-11-28 03:43:59,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023957814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:59,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673503439] [2024-11-28 03:43:59,411 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:59,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:59,414 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:59,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 03:43:59,510 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:59,510 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:59,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:43:59,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:59,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:00,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673503439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:00,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:00,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-28 03:44:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899958596] [2024-11-28 03:44:00,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:00,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:44:00,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:00,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:44:00,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:44:00,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:00,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 581 transitions, 11258 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:00,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:00,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:00,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:01,460 INFO L124 PetriNetUnfolderBase]: 1175/1964 cut-off events. [2024-11-28 03:44:01,460 INFO L125 PetriNetUnfolderBase]: For 64413/64413 co-relation queries the response was YES. [2024-11-28 03:44:01,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19730 conditions, 1964 events. 1175/1964 cut-off events. For 64413/64413 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10582 event pairs, 22 based on Foata normal form. 1/1965 useless extension candidates. Maximal degree in co-relation 19596. Up to 1521 conditions per place. [2024-11-28 03:44:01,492 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 543 selfloop transitions, 112 changer transitions 4/660 dead transitions. [2024-11-28 03:44:01,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 660 transitions, 13803 flow [2024-11-28 03:44:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:44:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:44:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-11-28 03:44:01,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-28 03:44:01,493 INFO L175 Difference]: Start difference. First operand has 338 places, 581 transitions, 11258 flow. Second operand 10 states and 112 transitions. [2024-11-28 03:44:01,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 660 transitions, 13803 flow [2024-11-28 03:44:02,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 660 transitions, 13445 flow, removed 165 selfloop flow, removed 4 redundant places. [2024-11-28 03:44:02,117 INFO L231 Difference]: Finished difference. Result has 345 places, 612 transitions, 11909 flow [2024-11-28 03:44:02,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10928, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11909, PETRI_PLACES=345, PETRI_TRANSITIONS=612} [2024-11-28 03:44:02,119 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 323 predicate places. [2024-11-28 03:44:02,120 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 612 transitions, 11909 flow [2024-11-28 03:44:02,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:02,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:02,120 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:02,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:02,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 03:44:02,321 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:02,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -909004263, now seen corresponding path program 35 times [2024-11-28 03:44:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:02,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165346994] [2024-11-28 03:44:02,322 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:02,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:02,349 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:02,349 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:02,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165346994] [2024-11-28 03:44:02,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165346994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:02,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266332510] [2024-11-28 03:44:02,640 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:02,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:02,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:02,643 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:02,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 03:44:02,733 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:02,733 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:02,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:02,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:02,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266332510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:03,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:03,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-28 03:44:03,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120713368] [2024-11-28 03:44:03,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:03,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:44:03,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:03,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:44:03,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:44:03,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:03,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 612 transitions, 11909 flow. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:03,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:03,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:03,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:04,385 INFO L124 PetriNetUnfolderBase]: 1173/1954 cut-off events. [2024-11-28 03:44:04,385 INFO L125 PetriNetUnfolderBase]: For 64920/64920 co-relation queries the response was YES. [2024-11-28 03:44:04,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19432 conditions, 1954 events. 1173/1954 cut-off events. For 64920/64920 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10461 event pairs, 20 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 19297. Up to 1521 conditions per place. [2024-11-28 03:44:04,417 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 535 selfloop transitions, 111 changer transitions 11/658 dead transitions. [2024-11-28 03:44:04,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 658 transitions, 13804 flow [2024-11-28 03:44:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:44:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:44:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-11-28 03:44:04,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-28 03:44:04,419 INFO L175 Difference]: Start difference. First operand has 345 places, 612 transitions, 11909 flow. Second operand 11 states and 116 transitions. [2024-11-28 03:44:04,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 658 transitions, 13804 flow [2024-11-28 03:44:05,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 658 transitions, 13518 flow, removed 109 selfloop flow, removed 3 redundant places. [2024-11-28 03:44:05,042 INFO L231 Difference]: Finished difference. Result has 355 places, 611 transitions, 11930 flow [2024-11-28 03:44:05,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=11659, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11930, PETRI_PLACES=355, PETRI_TRANSITIONS=611} [2024-11-28 03:44:05,044 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 333 predicate places. [2024-11-28 03:44:05,044 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 611 transitions, 11930 flow [2024-11-28 03:44:05,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:05,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:05,045 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:05,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:05,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 03:44:05,246 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:05,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:05,247 INFO L85 PathProgramCache]: Analyzing trace with hash 11238553, now seen corresponding path program 36 times [2024-11-28 03:44:05,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:05,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797200139] [2024-11-28 03:44:05,247 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:05,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:05,260 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:44:05,260 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797200139] [2024-11-28 03:44:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797200139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878979656] [2024-11-28 03:44:05,592 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:05,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:05,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:05,595 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:05,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 03:44:05,684 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 03:44:05,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:05,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:05,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:05,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:06,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878979656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:06,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:06,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-28 03:44:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510831397] [2024-11-28 03:44:06,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:06,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:44:06,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:06,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:44:06,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:44:06,140 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:06,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 611 transitions, 11930 flow. Second operand has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:06,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:06,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:06,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:07,584 INFO L124 PetriNetUnfolderBase]: 1166/1935 cut-off events. [2024-11-28 03:44:07,584 INFO L125 PetriNetUnfolderBase]: For 63092/63092 co-relation queries the response was YES. [2024-11-28 03:44:07,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19305 conditions, 1935 events. 1166/1935 cut-off events. For 63092/63092 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10300 event pairs, 20 based on Foata normal form. 1/1936 useless extension candidates. Maximal degree in co-relation 19166. Up to 1576 conditions per place. [2024-11-28 03:44:07,608 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 537 selfloop transitions, 111 changer transitions 4/653 dead transitions. [2024-11-28 03:44:07,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 653 transitions, 13785 flow [2024-11-28 03:44:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:44:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:44:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-11-28 03:44:07,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-11-28 03:44:07,610 INFO L175 Difference]: Start difference. First operand has 355 places, 611 transitions, 11930 flow. Second operand 11 states and 111 transitions. [2024-11-28 03:44:07,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 653 transitions, 13785 flow [2024-11-28 03:44:08,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 653 transitions, 13402 flow, removed 100 selfloop flow, removed 7 redundant places. [2024-11-28 03:44:08,145 INFO L231 Difference]: Finished difference. Result has 358 places, 618 transitions, 12068 flow [2024-11-28 03:44:08,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=11615, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12068, PETRI_PLACES=358, PETRI_TRANSITIONS=618} [2024-11-28 03:44:08,146 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 336 predicate places. [2024-11-28 03:44:08,146 INFO L471 AbstractCegarLoop]: Abstraction has has 358 places, 618 transitions, 12068 flow [2024-11-28 03:44:08,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:08,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:08,146 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:08,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:08,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 03:44:08,347 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:08,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1689236161, now seen corresponding path program 37 times [2024-11-28 03:44:08,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:08,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580600421] [2024-11-28 03:44:08,348 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:44:08,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:08,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:08,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580600421] [2024-11-28 03:44:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580600421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:08,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299680831] [2024-11-28 03:44:08,611 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:44:08,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:08,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:08,613 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:08,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 03:44:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:08,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:08,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:08,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:09,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299680831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:09,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:09,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2024-11-28 03:44:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328888737] [2024-11-28 03:44:09,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:09,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:44:09,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:09,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:44:09,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:44:09,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:09,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 618 transitions, 12068 flow. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:09,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:09,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:09,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:10,386 INFO L124 PetriNetUnfolderBase]: 1189/1983 cut-off events. [2024-11-28 03:44:10,386 INFO L125 PetriNetUnfolderBase]: For 63901/63901 co-relation queries the response was YES. [2024-11-28 03:44:10,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19744 conditions, 1983 events. 1189/1983 cut-off events. For 63901/63901 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10688 event pairs, 32 based on Foata normal form. 1/1984 useless extension candidates. Maximal degree in co-relation 19604. Up to 1789 conditions per place. [2024-11-28 03:44:10,422 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 579 selfloop transitions, 72 changer transitions 4/656 dead transitions. [2024-11-28 03:44:10,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 656 transitions, 13836 flow [2024-11-28 03:44:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:44:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:44:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-11-28 03:44:10,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-11-28 03:44:10,424 INFO L175 Difference]: Start difference. First operand has 358 places, 618 transitions, 12068 flow. Second operand 9 states and 89 transitions. [2024-11-28 03:44:10,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 656 transitions, 13836 flow [2024-11-28 03:44:10,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 656 transitions, 13601 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-11-28 03:44:10,859 INFO L231 Difference]: Finished difference. Result has 361 places, 634 transitions, 12410 flow [2024-11-28 03:44:10,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=11837, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12410, PETRI_PLACES=361, PETRI_TRANSITIONS=634} [2024-11-28 03:44:10,860 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 339 predicate places. [2024-11-28 03:44:10,860 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 634 transitions, 12410 flow [2024-11-28 03:44:10,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:10,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:10,860 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:10,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-28 03:44:11,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-28 03:44:11,061 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:11,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:11,062 INFO L85 PathProgramCache]: Analyzing trace with hash -28512899, now seen corresponding path program 38 times [2024-11-28 03:44:11,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:11,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794851396] [2024-11-28 03:44:11,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:11,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:11,074 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:11,074 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:11,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:11,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794851396] [2024-11-28 03:44:11,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794851396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:11,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146051682] [2024-11-28 03:44:11,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:11,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:11,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:11,288 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:11,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 03:44:11,351 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:11,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:11,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:11,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:11,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:11,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146051682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:11,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:11,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-28 03:44:11,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027820813] [2024-11-28 03:44:11,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:11,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:44:11,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:11,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:44:11,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:44:11,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:11,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 634 transitions, 12410 flow. Second operand has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:11,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:11,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:11,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:12,643 INFO L124 PetriNetUnfolderBase]: 1229/2049 cut-off events. [2024-11-28 03:44:12,643 INFO L125 PetriNetUnfolderBase]: For 68955/68955 co-relation queries the response was YES. [2024-11-28 03:44:12,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20370 conditions, 2049 events. 1229/2049 cut-off events. For 68955/68955 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11128 event pairs, 31 based on Foata normal form. 1/2050 useless extension candidates. Maximal degree in co-relation 20228. Up to 1794 conditions per place. [2024-11-28 03:44:12,669 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 586 selfloop transitions, 87 changer transitions 8/682 dead transitions. [2024-11-28 03:44:12,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 682 transitions, 14405 flow [2024-11-28 03:44:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:44:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:44:12,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-11-28 03:44:12,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-28 03:44:12,670 INFO L175 Difference]: Start difference. First operand has 361 places, 634 transitions, 12410 flow. Second operand 9 states and 95 transitions. [2024-11-28 03:44:12,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 682 transitions, 14405 flow [2024-11-28 03:44:13,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 682 transitions, 14054 flow, removed 108 selfloop flow, removed 6 redundant places. [2024-11-28 03:44:13,170 INFO L231 Difference]: Finished difference. Result has 365 places, 649 transitions, 12627 flow [2024-11-28 03:44:13,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12065, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12627, PETRI_PLACES=365, PETRI_TRANSITIONS=649} [2024-11-28 03:44:13,171 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 343 predicate places. [2024-11-28 03:44:13,171 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 649 transitions, 12627 flow [2024-11-28 03:44:13,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:13,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:13,171 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:13,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-28 03:44:13,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-28 03:44:13,372 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:13,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash -106267409, now seen corresponding path program 39 times [2024-11-28 03:44:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162041602] [2024-11-28 03:44:13,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:13,385 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:44:13,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162041602] [2024-11-28 03:44:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162041602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544461813] [2024-11-28 03:44:13,590 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:13,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:13,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:13,592 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:13,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 03:44:13,657 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:44:13,657 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:13,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:13,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:13,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:14,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544461813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:14,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:14,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-28 03:44:14,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971326775] [2024-11-28 03:44:14,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:14,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:44:14,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:14,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:44:14,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:44:14,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:14,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 649 transitions, 12627 flow. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:14,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:14,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:14,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:14,933 INFO L124 PetriNetUnfolderBase]: 1222/2032 cut-off events. [2024-11-28 03:44:14,933 INFO L125 PetriNetUnfolderBase]: For 65876/65876 co-relation queries the response was YES. [2024-11-28 03:44:14,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20017 conditions, 2032 events. 1222/2032 cut-off events. For 65876/65876 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10983 event pairs, 32 based on Foata normal form. 1/2033 useless extension candidates. Maximal degree in co-relation 19874. Up to 1794 conditions per place. [2024-11-28 03:44:14,959 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 581 selfloop transitions, 86 changer transitions 5/673 dead transitions. [2024-11-28 03:44:14,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 673 transitions, 14132 flow [2024-11-28 03:44:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:44:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:44:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-11-28 03:44:14,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-28 03:44:14,960 INFO L175 Difference]: Start difference. First operand has 365 places, 649 transitions, 12627 flow. Second operand 8 states and 86 transitions. [2024-11-28 03:44:14,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 673 transitions, 14132 flow [2024-11-28 03:44:15,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 673 transitions, 13864 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-11-28 03:44:15,636 INFO L231 Difference]: Finished difference. Result has 367 places, 651 transitions, 12640 flow [2024-11-28 03:44:15,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12363, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12640, PETRI_PLACES=367, PETRI_TRANSITIONS=651} [2024-11-28 03:44:15,637 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 345 predicate places. [2024-11-28 03:44:15,637 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 651 transitions, 12640 flow [2024-11-28 03:44:15,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:15,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:15,638 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:15,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:15,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-28 03:44:15,838 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:15,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash -198696163, now seen corresponding path program 40 times [2024-11-28 03:44:15,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709360476] [2024-11-28 03:44:15,839 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:15,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:15,847 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:15,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709360476] [2024-11-28 03:44:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709360476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396488262] [2024-11-28 03:44:16,192 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:16,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:16,194 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:16,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 03:44:16,268 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:16,268 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:16,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:16,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:16,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:16,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396488262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:16,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:16,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-28 03:44:16,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537399634] [2024-11-28 03:44:16,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:16,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:44:16,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:16,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:44:16,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:44:16,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:16,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 651 transitions, 12640 flow. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:16,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:16,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:16,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:17,858 INFO L124 PetriNetUnfolderBase]: 1375/2337 cut-off events. [2024-11-28 03:44:17,858 INFO L125 PetriNetUnfolderBase]: For 80500/80500 co-relation queries the response was YES. [2024-11-28 03:44:17,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23162 conditions, 2337 events. 1375/2337 cut-off events. For 80500/80500 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13427 event pairs, 36 based on Foata normal form. 2/2339 useless extension candidates. Maximal degree in co-relation 23018. Up to 1953 conditions per place. [2024-11-28 03:44:17,892 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 647 selfloop transitions, 113 changer transitions 23/784 dead transitions. [2024-11-28 03:44:17,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 784 transitions, 16618 flow [2024-11-28 03:44:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:44:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 03:44:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-11-28 03:44:17,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-28 03:44:17,894 INFO L175 Difference]: Start difference. First operand has 367 places, 651 transitions, 12640 flow. Second operand 12 states and 124 transitions. [2024-11-28 03:44:17,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 784 transitions, 16618 flow [2024-11-28 03:44:18,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 784 transitions, 16424 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-11-28 03:44:18,527 INFO L231 Difference]: Finished difference. Result has 382 places, 716 transitions, 14397 flow [2024-11-28 03:44:18,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12456, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14397, PETRI_PLACES=382, PETRI_TRANSITIONS=716} [2024-11-28 03:44:18,528 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 360 predicate places. [2024-11-28 03:44:18,528 INFO L471 AbstractCegarLoop]: Abstraction has has 382 places, 716 transitions, 14397 flow [2024-11-28 03:44:18,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:18,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:18,528 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:18,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-28 03:44:18,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:18,728 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:18,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:18,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1916445223, now seen corresponding path program 41 times [2024-11-28 03:44:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509292511] [2024-11-28 03:44:18,729 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:18,748 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:44:18,748 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:19,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509292511] [2024-11-28 03:44:19,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509292511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110358930] [2024-11-28 03:44:19,045 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:19,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:19,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:19,047 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:19,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 03:44:19,140 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:44:19,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:19,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:19,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:19,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110358930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:19,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:19,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-28 03:44:19,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057828240] [2024-11-28 03:44:19,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:19,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:44:19,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:19,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:44:19,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:44:19,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:19,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 716 transitions, 14397 flow. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 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) [2024-11-28 03:44:19,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:19,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:19,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:21,124 INFO L124 PetriNetUnfolderBase]: 1380/2347 cut-off events. [2024-11-28 03:44:21,124 INFO L125 PetriNetUnfolderBase]: For 89986/89986 co-relation queries the response was YES. [2024-11-28 03:44:21,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24046 conditions, 2347 events. 1380/2347 cut-off events. For 89986/89986 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13489 event pairs, 42 based on Foata normal form. 1/2348 useless extension candidates. Maximal degree in co-relation 23893. Up to 1946 conditions per place. [2024-11-28 03:44:21,162 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 664 selfloop transitions, 111 changer transitions 4/780 dead transitions. [2024-11-28 03:44:21,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 780 transitions, 17086 flow [2024-11-28 03:44:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:44:21,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 03:44:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-11-28 03:44:21,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-28 03:44:21,163 INFO L175 Difference]: Start difference. First operand has 382 places, 716 transitions, 14397 flow. Second operand 10 states and 111 transitions. [2024-11-28 03:44:21,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 780 transitions, 17086 flow [2024-11-28 03:44:22,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 780 transitions, 16484 flow, removed 301 selfloop flow, removed 2 redundant places. [2024-11-28 03:44:22,082 INFO L231 Difference]: Finished difference. Result has 390 places, 728 transitions, 14506 flow [2024-11-28 03:44:22,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=13823, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14506, PETRI_PLACES=390, PETRI_TRANSITIONS=728} [2024-11-28 03:44:22,083 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 368 predicate places. [2024-11-28 03:44:22,084 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 728 transitions, 14506 flow [2024-11-28 03:44:22,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 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) [2024-11-28 03:44:22,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:22,084 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:22,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-28 03:44:22,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:22,285 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:22,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1994199733, now seen corresponding path program 42 times [2024-11-28 03:44:22,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:22,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109817552] [2024-11-28 03:44:22,285 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:22,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:22,300 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:44:22,300 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:22,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:22,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109817552] [2024-11-28 03:44:22,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109817552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:22,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928928431] [2024-11-28 03:44:22,608 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:22,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:22,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:22,610 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:22,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 03:44:22,694 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:44:22,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:22,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:22,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:22,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:23,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928928431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:23,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:23,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-28 03:44:23,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643212059] [2024-11-28 03:44:23,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:23,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:44:23,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:23,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:44:23,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:44:23,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:23,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 728 transitions, 14506 flow. Second operand has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:23,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:23,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:23,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:24,840 INFO L124 PetriNetUnfolderBase]: 1379/2338 cut-off events. [2024-11-28 03:44:24,840 INFO L125 PetriNetUnfolderBase]: For 81926/81926 co-relation queries the response was YES. [2024-11-28 03:44:24,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23477 conditions, 2338 events. 1379/2338 cut-off events. For 81926/81926 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13371 event pairs, 39 based on Foata normal form. 2/2340 useless extension candidates. Maximal degree in co-relation 23322. Up to 1946 conditions per place. [2024-11-28 03:44:24,881 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 655 selfloop transitions, 109 changer transitions 12/777 dead transitions. [2024-11-28 03:44:24,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 777 transitions, 16782 flow [2024-11-28 03:44:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:44:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:44:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-11-28 03:44:24,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-11-28 03:44:24,882 INFO L175 Difference]: Start difference. First operand has 390 places, 728 transitions, 14506 flow. Second operand 11 states and 114 transitions. [2024-11-28 03:44:24,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 777 transitions, 16782 flow [2024-11-28 03:44:25,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 777 transitions, 16397 flow, removed 135 selfloop flow, removed 4 redundant places. [2024-11-28 03:44:25,696 INFO L231 Difference]: Finished difference. Result has 400 places, 727 transitions, 14475 flow [2024-11-28 03:44:25,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14183, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14475, PETRI_PLACES=400, PETRI_TRANSITIONS=727} [2024-11-28 03:44:25,697 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 378 predicate places. [2024-11-28 03:44:25,697 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 727 transitions, 14475 flow [2024-11-28 03:44:25,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:25,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:25,697 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:25,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-28 03:44:25,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:25,898 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:25,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1511917145, now seen corresponding path program 43 times [2024-11-28 03:44:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:25,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510633915] [2024-11-28 03:44:25,898 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:44:25,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:26,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510633915] [2024-11-28 03:44:26,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510633915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:26,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906009124] [2024-11-28 03:44:26,221 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:44:26,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:26,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:26,224 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:26,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 03:44:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:26,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:26,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:26,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906009124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:26,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:26,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-28 03:44:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785573088] [2024-11-28 03:44:26,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:26,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:44:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:26,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:44:26,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:44:26,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:26,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 727 transitions, 14475 flow. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:26,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:26,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:26,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:28,476 INFO L124 PetriNetUnfolderBase]: 1367/2310 cut-off events. [2024-11-28 03:44:28,476 INFO L125 PetriNetUnfolderBase]: For 77029/77029 co-relation queries the response was YES. [2024-11-28 03:44:28,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23186 conditions, 2310 events. 1367/2310 cut-off events. For 77029/77029 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 13128 event pairs, 38 based on Foata normal form. 1/2311 useless extension candidates. Maximal degree in co-relation 23026. Up to 2058 conditions per place. [2024-11-28 03:44:28,518 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 671 selfloop transitions, 91 changer transitions 4/767 dead transitions. [2024-11-28 03:44:28,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 767 transitions, 16516 flow [2024-11-28 03:44:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:44:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:44:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-11-28 03:44:28,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-11-28 03:44:28,520 INFO L175 Difference]: Start difference. First operand has 400 places, 727 transitions, 14475 flow. Second operand 11 states and 107 transitions. [2024-11-28 03:44:28,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 767 transitions, 16516 flow [2024-11-28 03:44:29,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 767 transitions, 16107 flow, removed 114 selfloop flow, removed 7 redundant places. [2024-11-28 03:44:29,311 INFO L231 Difference]: Finished difference. Result has 403 places, 736 transitions, 14580 flow [2024-11-28 03:44:29,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14118, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14580, PETRI_PLACES=403, PETRI_TRANSITIONS=736} [2024-11-28 03:44:29,312 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 381 predicate places. [2024-11-28 03:44:29,312 INFO L471 AbstractCegarLoop]: Abstraction has has 403 places, 736 transitions, 14580 flow [2024-11-28 03:44:29,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:29,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:29,312 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:29,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-28 03:44:29,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:29,513 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:29,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:29,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1501262567, now seen corresponding path program 44 times [2024-11-28 03:44:29,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:29,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544608413] [2024-11-28 03:44:29,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:29,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:29,525 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:29,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:29,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544608413] [2024-11-28 03:44:29,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544608413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839671631] [2024-11-28 03:44:29,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:29,814 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:29,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 03:44:29,894 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:29,894 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:29,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:29,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:44:30,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:30,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839671631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:30,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:30,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-28 03:44:30,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626272110] [2024-11-28 03:44:30,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:30,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:44:30,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:30,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:44:30,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:44:30,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:30,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 736 transitions, 14580 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:30,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:30,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:30,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:31,782 INFO L124 PetriNetUnfolderBase]: 1400/2374 cut-off events. [2024-11-28 03:44:31,782 INFO L125 PetriNetUnfolderBase]: For 80570/80570 co-relation queries the response was YES. [2024-11-28 03:44:31,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23819 conditions, 2374 events. 1400/2374 cut-off events. For 80570/80570 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13655 event pairs, 38 based on Foata normal form. 1/2375 useless extension candidates. Maximal degree in co-relation 23658. Up to 2168 conditions per place. [2024-11-28 03:44:31,823 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 700 selfloop transitions, 73 changer transitions 4/778 dead transitions. [2024-11-28 03:44:31,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 778 transitions, 16751 flow [2024-11-28 03:44:31,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:44:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:44:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-28 03:44:31,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 03:44:31,824 INFO L175 Difference]: Start difference. First operand has 403 places, 736 transitions, 14580 flow. Second operand 9 states and 90 transitions. [2024-11-28 03:44:31,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 778 transitions, 16751 flow [2024-11-28 03:44:32,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 778 transitions, 16470 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-11-28 03:44:32,617 INFO L231 Difference]: Finished difference. Result has 407 places, 754 transitions, 14978 flow [2024-11-28 03:44:32,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14303, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14978, PETRI_PLACES=407, PETRI_TRANSITIONS=754} [2024-11-28 03:44:32,618 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 385 predicate places. [2024-11-28 03:44:32,618 INFO L471 AbstractCegarLoop]: Abstraction has has 407 places, 754 transitions, 14978 flow [2024-11-28 03:44:32,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:32,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:32,619 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:32,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:32,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:32,819 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:32,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:32,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1795707403, now seen corresponding path program 45 times [2024-11-28 03:44:32,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:32,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511661839] [2024-11-28 03:44:32,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:32,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:32,835 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:44:32,835 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511661839] [2024-11-28 03:44:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511661839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106428065] [2024-11-28 03:44:33,118 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:33,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:33,120 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:33,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 03:44:33,213 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:44:33,214 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:33,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:33,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:44:33,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:33,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106428065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:33,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:33,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-28 03:44:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643078873] [2024-11-28 03:44:33,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:33,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:44:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:33,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:44:33,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:44:33,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:33,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 754 transitions, 14978 flow. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:33,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:33,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:35,425 INFO L124 PetriNetUnfolderBase]: 1447/2449 cut-off events. [2024-11-28 03:44:35,425 INFO L125 PetriNetUnfolderBase]: For 86100/86100 co-relation queries the response was YES. [2024-11-28 03:44:35,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24571 conditions, 2449 events. 1447/2449 cut-off events. For 86100/86100 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14140 event pairs, 39 based on Foata normal form. 1/2450 useless extension candidates. Maximal degree in co-relation 24407. Up to 2176 conditions per place. [2024-11-28 03:44:35,468 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 709 selfloop transitions, 93 changer transitions 6/809 dead transitions. [2024-11-28 03:44:35,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 809 transitions, 17459 flow [2024-11-28 03:44:35,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:44:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:44:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-28 03:44:35,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-28 03:44:35,469 INFO L175 Difference]: Start difference. First operand has 407 places, 754 transitions, 14978 flow. Second operand 9 states and 96 transitions. [2024-11-28 03:44:35,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 809 transitions, 17459 flow [2024-11-28 03:44:36,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 809 transitions, 17127 flow, removed 118 selfloop flow, removed 5 redundant places. [2024-11-28 03:44:36,320 INFO L231 Difference]: Finished difference. Result has 412 places, 775 transitions, 15426 flow [2024-11-28 03:44:36,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14652, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15426, PETRI_PLACES=412, PETRI_TRANSITIONS=775} [2024-11-28 03:44:36,321 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 390 predicate places. [2024-11-28 03:44:36,321 INFO L471 AbstractCegarLoop]: Abstraction has has 412 places, 775 transitions, 15426 flow [2024-11-28 03:44:36,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:36,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:36,321 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:36,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-28 03:44:36,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-28 03:44:36,522 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:36,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1873461913, now seen corresponding path program 46 times [2024-11-28 03:44:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:36,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847165751] [2024-11-28 03:44:36,523 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:36,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:36,531 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:36,532 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:36,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847165751] [2024-11-28 03:44:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847165751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352309052] [2024-11-28 03:44:36,814 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:36,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:36,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:36,817 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:36,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 03:44:36,905 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:36,905 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:36,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:44:36,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:44:37,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:37,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352309052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:37,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:37,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-28 03:44:37,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800475545] [2024-11-28 03:44:37,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:37,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:44:37,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:37,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:44:37,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:44:37,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:37,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 775 transitions, 15426 flow. Second operand has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:37,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:37,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:37,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:38,991 INFO L124 PetriNetUnfolderBase]: 1441/2434 cut-off events. [2024-11-28 03:44:38,991 INFO L125 PetriNetUnfolderBase]: For 83669/83669 co-relation queries the response was YES. [2024-11-28 03:44:39,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24200 conditions, 2434 events. 1441/2434 cut-off events. For 83669/83669 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13962 event pairs, 39 based on Foata normal form. 1/2435 useless extension candidates. Maximal degree in co-relation 24034. Up to 2176 conditions per place. [2024-11-28 03:44:39,039 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 705 selfloop transitions, 90 changer transitions 6/802 dead transitions. [2024-11-28 03:44:39,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 802 transitions, 17270 flow [2024-11-28 03:44:39,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:44:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:44:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-11-28 03:44:39,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-11-28 03:44:39,040 INFO L175 Difference]: Start difference. First operand has 412 places, 775 transitions, 15426 flow. Second operand 8 states and 87 transitions. [2024-11-28 03:44:39,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 802 transitions, 17270 flow [2024-11-28 03:44:39,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 802 transitions, 16988 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-11-28 03:44:39,932 INFO L231 Difference]: Finished difference. Result has 414 places, 777 transitions, 15433 flow [2024-11-28 03:44:39,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15148, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15433, PETRI_PLACES=414, PETRI_TRANSITIONS=777} [2024-11-28 03:44:39,933 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 392 predicate places. [2024-11-28 03:44:39,933 INFO L471 AbstractCegarLoop]: Abstraction has has 414 places, 777 transitions, 15433 flow [2024-11-28 03:44:39,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:39,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:39,933 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:39,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:40,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:40,134 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:40,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1575023147, now seen corresponding path program 47 times [2024-11-28 03:44:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:40,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486524615] [2024-11-28 03:44:40,135 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:40,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:40,152 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:44:40,153 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486524615] [2024-11-28 03:44:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486524615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699555182] [2024-11-28 03:44:40,267 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:40,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:40,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:40,269 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:40,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 03:44:40,365 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:44:40,365 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:40,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:44:40,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:40,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:40,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699555182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:40,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:40,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:44:40,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407730025] [2024-11-28 03:44:40,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:40,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:44:40,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:40,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:44:40,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:44:40,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:40,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 777 transitions, 15433 flow. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:40,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:40,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:40,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:42,337 INFO L124 PetriNetUnfolderBase]: 1757/2997 cut-off events. [2024-11-28 03:44:42,337 INFO L125 PetriNetUnfolderBase]: For 104922/104922 co-relation queries the response was YES. [2024-11-28 03:44:42,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29393 conditions, 2997 events. 1757/2997 cut-off events. For 104922/104922 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 17965 event pairs, 310 based on Foata normal form. 3/3000 useless extension candidates. Maximal degree in co-relation 29226. Up to 1776 conditions per place. [2024-11-28 03:44:42,388 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 726 selfloop transitions, 246 changer transitions 12/985 dead transitions. [2024-11-28 03:44:42,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 985 transitions, 21302 flow [2024-11-28 03:44:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:44:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:44:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-28 03:44:42,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 03:44:42,389 INFO L175 Difference]: Start difference. First operand has 414 places, 777 transitions, 15433 flow. Second operand 9 states and 90 transitions. [2024-11-28 03:44:42,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 985 transitions, 21302 flow [2024-11-28 03:44:43,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 985 transitions, 21063 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-28 03:44:43,269 INFO L231 Difference]: Finished difference. Result has 421 places, 864 transitions, 17858 flow [2024-11-28 03:44:43,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15259, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17858, PETRI_PLACES=421, PETRI_TRANSITIONS=864} [2024-11-28 03:44:43,270 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 399 predicate places. [2024-11-28 03:44:43,270 INFO L471 AbstractCegarLoop]: Abstraction has has 421 places, 864 transitions, 17858 flow [2024-11-28 03:44:43,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:43,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:43,270 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:43,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-28 03:44:43,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:43,470 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:43,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash -943728714, now seen corresponding path program 48 times [2024-11-28 03:44:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328391881] [2024-11-28 03:44:43,471 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:43,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:43,481 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:44:43,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:43,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328391881] [2024-11-28 03:44:43,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328391881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782220333] [2024-11-28 03:44:43,570 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:43,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:43,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:43,572 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:43,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 03:44:43,639 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:44:43,639 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:43,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:44:43,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:43,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:43,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782220333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:43,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:43,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 03:44:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487364808] [2024-11-28 03:44:43,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:43,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:44:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:43,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:44:43,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:44:43,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:43,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 864 transitions, 17858 flow. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:43,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:43,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:43,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:45,024 INFO L124 PetriNetUnfolderBase]: 1903/3235 cut-off events. [2024-11-28 03:44:45,024 INFO L125 PetriNetUnfolderBase]: For 123119/123119 co-relation queries the response was YES. [2024-11-28 03:44:45,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32694 conditions, 3235 events. 1903/3235 cut-off events. For 123119/123119 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 19565 event pairs, 86 based on Foata normal form. 13/3248 useless extension candidates. Maximal degree in co-relation 32523. Up to 1047 conditions per place. [2024-11-28 03:44:45,071 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 641 selfloop transitions, 427 changer transitions 0/1069 dead transitions. [2024-11-28 03:44:45,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1069 transitions, 23840 flow [2024-11-28 03:44:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:44:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 03:44:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-11-28 03:44:45,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-28 03:44:45,072 INFO L175 Difference]: Start difference. First operand has 421 places, 864 transitions, 17858 flow. Second operand 13 states and 126 transitions. [2024-11-28 03:44:45,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 1069 transitions, 23840 flow [2024-11-28 03:44:46,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1069 transitions, 23483 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-11-28 03:44:46,154 INFO L231 Difference]: Finished difference. Result has 430 places, 931 transitions, 20213 flow [2024-11-28 03:44:46,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=17503, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20213, PETRI_PLACES=430, PETRI_TRANSITIONS=931} [2024-11-28 03:44:46,155 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 408 predicate places. [2024-11-28 03:44:46,155 INFO L471 AbstractCegarLoop]: Abstraction has has 430 places, 931 transitions, 20213 flow [2024-11-28 03:44:46,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:46,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:46,155 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:46,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-28 03:44:46,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:46,355 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:46,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash -990492690, now seen corresponding path program 49 times [2024-11-28 03:44:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404233546] [2024-11-28 03:44:46,356 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:44:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:46,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404233546] [2024-11-28 03:44:46,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404233546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760206622] [2024-11-28 03:44:46,447 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:44:46,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:46,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:46,451 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:46,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 03:44:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:46,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:44:46,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:46,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:46,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760206622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:46,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:46,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 03:44:46,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491983462] [2024-11-28 03:44:46,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:46,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:44:46,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:46,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:44:46,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:44:46,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:46,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 931 transitions, 20213 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:46,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:46,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:46,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:48,603 INFO L124 PetriNetUnfolderBase]: 2071/3497 cut-off events. [2024-11-28 03:44:48,603 INFO L125 PetriNetUnfolderBase]: For 159999/159999 co-relation queries the response was YES. [2024-11-28 03:44:48,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37737 conditions, 3497 events. 2071/3497 cut-off events. For 159999/159999 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 21438 event pairs, 144 based on Foata normal form. 26/3523 useless extension candidates. Maximal degree in co-relation 37563. Up to 1256 conditions per place. [2024-11-28 03:44:48,645 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 533 selfloop transitions, 531 changer transitions 0/1065 dead transitions. [2024-11-28 03:44:48,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1065 transitions, 25701 flow [2024-11-28 03:44:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:44:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 03:44:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 210 transitions. [2024-11-28 03:44:48,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-28 03:44:48,646 INFO L175 Difference]: Start difference. First operand has 430 places, 931 transitions, 20213 flow. Second operand 24 states and 210 transitions. [2024-11-28 03:44:48,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1065 transitions, 25701 flow [2024-11-28 03:44:49,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1065 transitions, 24993 flow, removed 156 selfloop flow, removed 4 redundant places. [2024-11-28 03:44:49,655 INFO L231 Difference]: Finished difference. Result has 457 places, 1023 transitions, 24182 flow [2024-11-28 03:44:49,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=19670, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=24182, PETRI_PLACES=457, PETRI_TRANSITIONS=1023} [2024-11-28 03:44:49,656 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 435 predicate places. [2024-11-28 03:44:49,656 INFO L471 AbstractCegarLoop]: Abstraction has has 457 places, 1023 transitions, 24182 flow [2024-11-28 03:44:49,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:49,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:49,656 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:49,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-28 03:44:49,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:49,857 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:49,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1565303104, now seen corresponding path program 50 times [2024-11-28 03:44:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826654806] [2024-11-28 03:44:49,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:49,864 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:49,864 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:49,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826654806] [2024-11-28 03:44:49,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826654806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761850949] [2024-11-28 03:44:49,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:49,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:49,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:49,928 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:49,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 03:44:49,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:49,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:49,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:44:49,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:50,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:50,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761850949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:50,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:50,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 03:44:50,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120814618] [2024-11-28 03:44:50,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:50,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:44:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:50,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:44:50,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:44:50,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:50,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1023 transitions, 24182 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:50,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:50,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:50,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:52,346 INFO L124 PetriNetUnfolderBase]: 2069/3503 cut-off events. [2024-11-28 03:44:52,346 INFO L125 PetriNetUnfolderBase]: For 162772/162772 co-relation queries the response was YES. [2024-11-28 03:44:52,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39253 conditions, 3503 events. 2069/3503 cut-off events. For 162772/162772 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 21676 event pairs, 225 based on Foata normal form. 8/3511 useless extension candidates. Maximal degree in co-relation 39071. Up to 1331 conditions per place. [2024-11-28 03:44:52,411 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 591 selfloop transitions, 463 changer transitions 4/1059 dead transitions. [2024-11-28 03:44:52,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 1059 transitions, 26639 flow [2024-11-28 03:44:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:44:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 03:44:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 163 transitions. [2024-11-28 03:44:52,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-11-28 03:44:52,413 INFO L175 Difference]: Start difference. First operand has 457 places, 1023 transitions, 24182 flow. Second operand 19 states and 163 transitions. [2024-11-28 03:44:52,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 1059 transitions, 26639 flow [2024-11-28 03:44:53,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1059 transitions, 24421 flow, removed 843 selfloop flow, removed 15 redundant places. [2024-11-28 03:44:53,968 INFO L231 Difference]: Finished difference. Result has 462 places, 1021 transitions, 22907 flow [2024-11-28 03:44:53,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=21965, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=22907, PETRI_PLACES=462, PETRI_TRANSITIONS=1021} [2024-11-28 03:44:53,972 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 440 predicate places. [2024-11-28 03:44:53,972 INFO L471 AbstractCegarLoop]: Abstraction has has 462 places, 1021 transitions, 22907 flow [2024-11-28 03:44:53,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:53,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:53,972 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:53,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:54,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:54,173 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:54,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash -585247900, now seen corresponding path program 51 times [2024-11-28 03:44:54,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:54,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958497012] [2024-11-28 03:44:54,174 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:54,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:54,180 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:44:54,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:54,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:54,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958497012] [2024-11-28 03:44:54,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958497012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:54,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348885235] [2024-11-28 03:44:54,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:54,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:54,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:54,248 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:54,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 03:44:54,320 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:44:54,320 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:54,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:44:54,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:54,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348885235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:54,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:54,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-28 03:44:54,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461632838] [2024-11-28 03:44:54,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:54,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:44:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:54,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:44:54,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:44:54,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:54,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1021 transitions, 22907 flow. Second operand has 16 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:54,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:54,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:54,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:44:56,304 INFO L124 PetriNetUnfolderBase]: 2121/3593 cut-off events. [2024-11-28 03:44:56,304 INFO L125 PetriNetUnfolderBase]: For 132789/132789 co-relation queries the response was YES. [2024-11-28 03:44:56,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37701 conditions, 3593 events. 2121/3593 cut-off events. For 132789/132789 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 22132 event pairs, 189 based on Foata normal form. 10/3603 useless extension candidates. Maximal degree in co-relation 37523. Up to 1622 conditions per place. [2024-11-28 03:44:56,381 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 683 selfloop transitions, 407 changer transitions 0/1091 dead transitions. [2024-11-28 03:44:56,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1091 transitions, 26057 flow [2024-11-28 03:44:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:44:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 03:44:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 163 transitions. [2024-11-28 03:44:56,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-11-28 03:44:56,382 INFO L175 Difference]: Start difference. First operand has 462 places, 1021 transitions, 22907 flow. Second operand 19 states and 163 transitions. [2024-11-28 03:44:56,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 1091 transitions, 26057 flow [2024-11-28 03:44:57,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1091 transitions, 25282 flow, removed 29 selfloop flow, removed 15 redundant places. [2024-11-28 03:44:57,805 INFO L231 Difference]: Finished difference. Result has 469 places, 1047 transitions, 23706 flow [2024-11-28 03:44:57,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=22161, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1021, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23706, PETRI_PLACES=469, PETRI_TRANSITIONS=1047} [2024-11-28 03:44:57,806 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 447 predicate places. [2024-11-28 03:44:57,807 INFO L471 AbstractCegarLoop]: Abstraction has has 469 places, 1047 transitions, 23706 flow [2024-11-28 03:44:57,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:57,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:44:57,807 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:57,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-28 03:44:58,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-28 03:44:58,008 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:44:58,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash -864518035, now seen corresponding path program 52 times [2024-11-28 03:44:58,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:58,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638882966] [2024-11-28 03:44:58,008 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:58,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:58,017 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:58,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:58,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:58,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638882966] [2024-11-28 03:44:58,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638882966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:58,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750099485] [2024-11-28 03:44:58,137 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:58,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:58,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:58,145 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:58,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-28 03:44:58,238 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:58,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:58,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:44:58,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:58,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:58,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750099485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:58,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:58,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-28 03:44:58,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464472490] [2024-11-28 03:44:58,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:58,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:44:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:58,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:44:58,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:44:58,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:44:58,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1047 transitions, 23706 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:58,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:44:58,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:44:58,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:00,739 INFO L124 PetriNetUnfolderBase]: 2141/3639 cut-off events. [2024-11-28 03:45:00,739 INFO L125 PetriNetUnfolderBase]: For 153058/153058 co-relation queries the response was YES. [2024-11-28 03:45:00,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38922 conditions, 3639 events. 2141/3639 cut-off events. For 153058/153058 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 22567 event pairs, 432 based on Foata normal form. 12/3651 useless extension candidates. Maximal degree in co-relation 38740. Up to 2589 conditions per place. [2024-11-28 03:45:00,839 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 856 selfloop transitions, 294 changer transitions 9/1160 dead transitions. [2024-11-28 03:45:00,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1160 transitions, 28527 flow [2024-11-28 03:45:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:45:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 03:45:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-11-28 03:45:00,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-28 03:45:00,840 INFO L175 Difference]: Start difference. First operand has 469 places, 1047 transitions, 23706 flow. Second operand 11 states and 105 transitions. [2024-11-28 03:45:00,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 1160 transitions, 28527 flow [2024-11-28 03:45:02,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1160 transitions, 28186 flow, removed 93 selfloop flow, removed 4 redundant places. [2024-11-28 03:45:02,732 INFO L231 Difference]: Finished difference. Result has 479 places, 1072 transitions, 25144 flow [2024-11-28 03:45:02,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=23365, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=760, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25144, PETRI_PLACES=479, PETRI_TRANSITIONS=1072} [2024-11-28 03:45:02,734 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 457 predicate places. [2024-11-28 03:45:02,734 INFO L471 AbstractCegarLoop]: Abstraction has has 479 places, 1072 transitions, 25144 flow [2024-11-28 03:45:02,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:02,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:45:02,734 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:02,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-28 03:45:02,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-28 03:45:02,935 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:45:02,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:02,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2058271636, now seen corresponding path program 53 times [2024-11-28 03:45:02,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:02,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837097977] [2024-11-28 03:45:02,936 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:02,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:02,958 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:02,958 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:03,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:03,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837097977] [2024-11-28 03:45:03,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837097977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:03,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941000416] [2024-11-28 03:45:03,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:03,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:03,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:03,062 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:03,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-28 03:45:03,146 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:03,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:03,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:03,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:03,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941000416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:03,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-28 03:45:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260764834] [2024-11-28 03:45:03,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:03,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:45:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:03,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:45:03,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:45:03,276 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:45:03,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1072 transitions, 25144 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:03,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:45:03,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:45:03,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:05,920 INFO L124 PetriNetUnfolderBase]: 2204/3746 cut-off events. [2024-11-28 03:45:05,920 INFO L125 PetriNetUnfolderBase]: For 164977/164977 co-relation queries the response was YES. [2024-11-28 03:45:06,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40564 conditions, 3746 events. 2204/3746 cut-off events. For 164977/164977 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 23404 event pairs, 173 based on Foata normal form. 12/3758 useless extension candidates. Maximal degree in co-relation 40377. Up to 1527 conditions per place. [2024-11-28 03:45:06,033 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 663 selfloop transitions, 488 changer transitions 0/1152 dead transitions. [2024-11-28 03:45:06,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1152 transitions, 28639 flow [2024-11-28 03:45:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:45:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 03:45:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 179 transitions. [2024-11-28 03:45:06,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2024-11-28 03:45:06,035 INFO L175 Difference]: Start difference. First operand has 479 places, 1072 transitions, 25144 flow. Second operand 21 states and 179 transitions. [2024-11-28 03:45:06,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1152 transitions, 28639 flow [2024-11-28 03:45:08,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1152 transitions, 27424 flow, removed 280 selfloop flow, removed 8 redundant places. [2024-11-28 03:45:08,250 INFO L231 Difference]: Finished difference. Result has 496 places, 1111 transitions, 26078 flow [2024-11-28 03:45:08,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=23939, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=26078, PETRI_PLACES=496, PETRI_TRANSITIONS=1111} [2024-11-28 03:45:08,251 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 474 predicate places. [2024-11-28 03:45:08,251 INFO L471 AbstractCegarLoop]: Abstraction has has 496 places, 1111 transitions, 26078 flow [2024-11-28 03:45:08,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:08,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:45:08,251 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:08,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-28 03:45:08,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-28 03:45:08,452 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:45:08,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1952514593, now seen corresponding path program 54 times [2024-11-28 03:45:08,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:08,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072960341] [2024-11-28 03:45:08,453 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:08,469 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:45:08,469 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:08,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072960341] [2024-11-28 03:45:08,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072960341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871992797] [2024-11-28 03:45:08,553 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:08,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:08,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:08,556 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:08,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-28 03:45:08,647 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:45:08,647 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:08,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:08,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:08,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871992797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:08,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:08,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 03:45:08,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367919981] [2024-11-28 03:45:08,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:08,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:45:08,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:08,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:45:08,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:45:08,793 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:45:08,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1111 transitions, 26078 flow. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:08,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:45:08,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:45:08,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:12,385 INFO L124 PetriNetUnfolderBase]: 2425/4045 cut-off events. [2024-11-28 03:45:12,385 INFO L125 PetriNetUnfolderBase]: For 177805/177805 co-relation queries the response was YES. [2024-11-28 03:45:12,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44983 conditions, 4045 events. 2425/4045 cut-off events. For 177805/177805 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 25050 event pairs, 458 based on Foata normal form. 24/4069 useless extension candidates. Maximal degree in co-relation 44791. Up to 2799 conditions per place. [2024-11-28 03:45:12,459 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 817 selfloop transitions, 514 changer transitions 1/1333 dead transitions. [2024-11-28 03:45:12,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 1333 transitions, 33780 flow [2024-11-28 03:45:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:45:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-28 03:45:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 231 transitions. [2024-11-28 03:45:12,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-11-28 03:45:12,461 INFO L175 Difference]: Start difference. First operand has 496 places, 1111 transitions, 26078 flow. Second operand 28 states and 231 transitions. [2024-11-28 03:45:12,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 1333 transitions, 33780 flow [2024-11-28 03:45:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1333 transitions, 33368 flow, removed 89 selfloop flow, removed 9 redundant places. [2024-11-28 03:45:14,574 INFO L231 Difference]: Finished difference. Result has 520 places, 1247 transitions, 31064 flow [2024-11-28 03:45:14,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=25277, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1099, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=31064, PETRI_PLACES=520, PETRI_TRANSITIONS=1247} [2024-11-28 03:45:14,575 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 498 predicate places. [2024-11-28 03:45:14,575 INFO L471 AbstractCegarLoop]: Abstraction has has 520 places, 1247 transitions, 31064 flow [2024-11-28 03:45:14,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:14,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:45:14,576 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:14,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-28 03:45:14,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-28 03:45:14,776 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:45:14,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:14,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1174788415, now seen corresponding path program 55 times [2024-11-28 03:45:14,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:14,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839204759] [2024-11-28 03:45:14,777 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:14,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:14,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839204759] [2024-11-28 03:45:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839204759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920562265] [2024-11-28 03:45:14,881 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:14,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:14,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:14,886 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:14,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-28 03:45:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:14,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:14,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:15,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:15,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920562265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:15,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:15,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 03:45:15,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373757771] [2024-11-28 03:45:15,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:15,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:45:15,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:15,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:45:15,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:45:15,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:45:15,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 1247 transitions, 31064 flow. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:15,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:45:15,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:45:15,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:19,088 INFO L124 PetriNetUnfolderBase]: 2512/4164 cut-off events. [2024-11-28 03:45:19,088 INFO L125 PetriNetUnfolderBase]: For 205956/205956 co-relation queries the response was YES. [2024-11-28 03:45:19,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49310 conditions, 4164 events. 2512/4164 cut-off events. For 205956/205956 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 25672 event pairs, 457 based on Foata normal form. 21/4185 useless extension candidates. Maximal degree in co-relation 49113. Up to 2860 conditions per place. [2024-11-28 03:45:19,182 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 933 selfloop transitions, 426 changer transitions 15/1375 dead transitions. [2024-11-28 03:45:19,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 1375 transitions, 37219 flow [2024-11-28 03:45:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:45:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 03:45:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 151 transitions. [2024-11-28 03:45:19,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4441176470588235 [2024-11-28 03:45:19,183 INFO L175 Difference]: Start difference. First operand has 520 places, 1247 transitions, 31064 flow. Second operand 17 states and 151 transitions. [2024-11-28 03:45:19,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 1375 transitions, 37219 flow [2024-11-28 03:45:21,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1375 transitions, 34904 flow, removed 1058 selfloop flow, removed 12 redundant places. [2024-11-28 03:45:21,972 INFO L231 Difference]: Finished difference. Result has 527 places, 1274 transitions, 31534 flow [2024-11-28 03:45:21,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=29297, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=31534, PETRI_PLACES=527, PETRI_TRANSITIONS=1274} [2024-11-28 03:45:21,974 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 505 predicate places. [2024-11-28 03:45:21,974 INFO L471 AbstractCegarLoop]: Abstraction has has 527 places, 1274 transitions, 31534 flow [2024-11-28 03:45:21,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:21,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:45:21,975 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:21,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-28 03:45:22,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-28 03:45:22,175 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:45:22,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash 249631683, now seen corresponding path program 56 times [2024-11-28 03:45:22,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:22,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045564986] [2024-11-28 03:45:22,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:22,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:22,189 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:22,189 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:22,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:22,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045564986] [2024-11-28 03:45:22,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045564986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:22,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020906024] [2024-11-28 03:45:22,295 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:22,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:22,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:22,297 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:22,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-28 03:45:22,387 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:22,387 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:22,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:22,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:22,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:22,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020906024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:22,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:22,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 03:45:22,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026504959] [2024-11-28 03:45:22,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:22,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:45:22,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:22,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:45:22,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:45:22,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:45:22,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1274 transitions, 31534 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:22,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:45:22,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:45:22,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:25,957 INFO L124 PetriNetUnfolderBase]: 2467/4083 cut-off events. [2024-11-28 03:45:25,957 INFO L125 PetriNetUnfolderBase]: For 187374/187374 co-relation queries the response was YES. [2024-11-28 03:45:26,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47701 conditions, 4083 events. 2467/4083 cut-off events. For 187374/187374 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 24942 event pairs, 433 based on Foata normal form. 27/4110 useless extension candidates. Maximal degree in co-relation 47501. Up to 2729 conditions per place. [2024-11-28 03:45:26,045 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 822 selfloop transitions, 512 changer transitions 11/1346 dead transitions. [2024-11-28 03:45:26,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1346 transitions, 35570 flow [2024-11-28 03:45:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:45:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 03:45:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 165 transitions. [2024-11-28 03:45:26,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-11-28 03:45:26,046 INFO L175 Difference]: Start difference. First operand has 527 places, 1274 transitions, 31534 flow. Second operand 19 states and 165 transitions. [2024-11-28 03:45:26,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1346 transitions, 35570 flow [2024-11-28 03:45:28,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 1346 transitions, 34737 flow, removed 213 selfloop flow, removed 11 redundant places. [2024-11-28 03:45:28,733 INFO L231 Difference]: Finished difference. Result has 533 places, 1259 transitions, 31547 flow [2024-11-28 03:45:28,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=30686, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=31547, PETRI_PLACES=533, PETRI_TRANSITIONS=1259} [2024-11-28 03:45:28,734 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 511 predicate places. [2024-11-28 03:45:28,734 INFO L471 AbstractCegarLoop]: Abstraction has has 533 places, 1259 transitions, 31547 flow [2024-11-28 03:45:28,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:28,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:45:28,734 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:28,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:28,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-28 03:45:28,935 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:45:28,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:28,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1604588982, now seen corresponding path program 57 times [2024-11-28 03:45:28,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:28,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480986271] [2024-11-28 03:45:28,936 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:45:28,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:28,944 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:45:28,944 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:29,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:29,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480986271] [2024-11-28 03:45:29,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480986271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:29,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848091072] [2024-11-28 03:45:29,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:45:29,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:29,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:29,060 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:29,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-28 03:45:29,144 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:45:29,144 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:29,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:29,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:29,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:29,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848091072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:29,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:29,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-28 03:45:29,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003575563] [2024-11-28 03:45:29,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:29,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:45:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:29,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:45:29,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:45:29,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:45:29,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1259 transitions, 31547 flow. Second operand has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:29,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:45:29,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:45:29,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:33,271 INFO L124 PetriNetUnfolderBase]: 2767/4496 cut-off events. [2024-11-28 03:45:33,271 INFO L125 PetriNetUnfolderBase]: For 207595/207595 co-relation queries the response was YES. [2024-11-28 03:45:33,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54353 conditions, 4496 events. 2767/4496 cut-off events. For 207595/207595 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 27261 event pairs, 234 based on Foata normal form. 20/4516 useless extension candidates. Maximal degree in co-relation 54153. Up to 1567 conditions per place. [2024-11-28 03:45:33,361 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 694 selfloop transitions, 760 changer transitions 13/1468 dead transitions. [2024-11-28 03:45:33,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 1468 transitions, 40990 flow [2024-11-28 03:45:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:45:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 03:45:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 177 transitions. [2024-11-28 03:45:33,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-11-28 03:45:33,362 INFO L175 Difference]: Start difference. First operand has 533 places, 1259 transitions, 31547 flow. Second operand 21 states and 177 transitions. [2024-11-28 03:45:33,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 1468 transitions, 40990 flow [2024-11-28 03:45:35,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 1468 transitions, 39882 flow, removed 65 selfloop flow, removed 18 redundant places. [2024-11-28 03:45:35,798 INFO L231 Difference]: Finished difference. Result has 538 places, 1413 transitions, 38206 flow [2024-11-28 03:45:35,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=30508, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=38206, PETRI_PLACES=538, PETRI_TRANSITIONS=1413} [2024-11-28 03:45:35,799 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 516 predicate places. [2024-11-28 03:45:35,799 INFO L471 AbstractCegarLoop]: Abstraction has has 538 places, 1413 transitions, 38206 flow [2024-11-28 03:45:35,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:35,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:45:35,799 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:35,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-28 03:45:36,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:36,000 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:45:36,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1340786178, now seen corresponding path program 58 times [2024-11-28 03:45:36,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:36,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110399789] [2024-11-28 03:45:36,001 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:45:36,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:36,013 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:45:36,013 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:36,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110399789] [2024-11-28 03:45:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110399789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137305338] [2024-11-28 03:45:36,113 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:45:36,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:36,116 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:36,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-28 03:45:36,192 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:45:36,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:36,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:36,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:36,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:36,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137305338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:36,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:36,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 03:45:36,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926405873] [2024-11-28 03:45:36,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:36,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:45:36,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:36,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:45:36,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:45:36,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:45:36,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1413 transitions, 38206 flow. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:36,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:45:36,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:45:36,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:40,149 INFO L124 PetriNetUnfolderBase]: 2966/4844 cut-off events. [2024-11-28 03:45:40,149 INFO L125 PetriNetUnfolderBase]: For 228448/228448 co-relation queries the response was YES. [2024-11-28 03:45:40,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58941 conditions, 4844 events. 2966/4844 cut-off events. For 228448/228448 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 29883 event pairs, 169 based on Foata normal form. 10/4854 useless extension candidates. Maximal degree in co-relation 58738. Up to 2542 conditions per place. [2024-11-28 03:45:40,240 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 1004 selfloop transitions, 564 changer transitions 0/1569 dead transitions. [2024-11-28 03:45:40,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 1569 transitions, 44312 flow [2024-11-28 03:45:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:45:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 03:45:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 238 transitions. [2024-11-28 03:45:40,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-11-28 03:45:40,242 INFO L175 Difference]: Start difference. First operand has 538 places, 1413 transitions, 38206 flow. Second operand 29 states and 238 transitions. [2024-11-28 03:45:40,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 1569 transitions, 44312 flow [2024-11-28 03:45:43,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 1569 transitions, 42697 flow, removed 735 selfloop flow, removed 8 redundant places. [2024-11-28 03:45:43,471 INFO L231 Difference]: Finished difference. Result has 561 places, 1512 transitions, 40542 flow [2024-11-28 03:45:43,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=36631, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=921, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=40542, PETRI_PLACES=561, PETRI_TRANSITIONS=1512} [2024-11-28 03:45:43,472 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 539 predicate places. [2024-11-28 03:45:43,472 INFO L471 AbstractCegarLoop]: Abstraction has has 561 places, 1512 transitions, 40542 flow [2024-11-28 03:45:43,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:43,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:45:43,472 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:43,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:43,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:43,673 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:45:43,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash 39797494, now seen corresponding path program 59 times [2024-11-28 03:45:43,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:43,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922725494] [2024-11-28 03:45:43,674 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:43,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:43,683 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:45:43,683 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:45:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922725494] [2024-11-28 03:45:43,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922725494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361018654] [2024-11-28 03:45:43,751 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:43,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:43,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:43,753 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:43,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-28 03:45:43,827 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:45:43,827 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:43,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:43,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:43,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:45:43,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361018654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:43,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:43,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2024-11-28 03:45:43,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196352419] [2024-11-28 03:45:43,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:43,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:45:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:43,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:45:43,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:45:43,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:45:43,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 1512 transitions, 40542 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:43,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:45:43,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:45:43,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:48,633 INFO L124 PetriNetUnfolderBase]: 3076/5053 cut-off events. [2024-11-28 03:45:48,633 INFO L125 PetriNetUnfolderBase]: For 209785/209785 co-relation queries the response was YES. [2024-11-28 03:45:48,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61234 conditions, 5053 events. 3076/5053 cut-off events. For 209785/209785 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 31738 event pairs, 164 based on Foata normal form. 51/5104 useless extension candidates. Maximal degree in co-relation 61027. Up to 1561 conditions per place. [2024-11-28 03:45:48,755 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 650 selfloop transitions, 964 changer transitions 1/1616 dead transitions. [2024-11-28 03:45:48,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1616 transitions, 46051 flow [2024-11-28 03:45:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:45:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 03:45:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 190 transitions. [2024-11-28 03:45:48,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-28 03:45:48,756 INFO L175 Difference]: Start difference. First operand has 561 places, 1512 transitions, 40542 flow. Second operand 22 states and 190 transitions. [2024-11-28 03:45:48,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1616 transitions, 46051 flow [2024-11-28 03:45:52,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 1616 transitions, 45361 flow, removed 190 selfloop flow, removed 8 redundant places. [2024-11-28 03:45:52,251 INFO L231 Difference]: Finished difference. Result has 578 places, 1571 transitions, 44723 flow [2024-11-28 03:45:52,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=39053, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=885, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=44723, PETRI_PLACES=578, PETRI_TRANSITIONS=1571} [2024-11-28 03:45:52,252 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 556 predicate places. [2024-11-28 03:45:52,252 INFO L471 AbstractCegarLoop]: Abstraction has has 578 places, 1571 transitions, 44723 flow [2024-11-28 03:45:52,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:52,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:45:52,253 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:52,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-28 03:45:52,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-28 03:45:52,453 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:45:52,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1858424898, now seen corresponding path program 60 times [2024-11-28 03:45:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827273211] [2024-11-28 03:45:52,454 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:52,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:52,470 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:45:52,470 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:52,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:52,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827273211] [2024-11-28 03:45:52,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827273211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:52,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135132421] [2024-11-28 03:45:52,731 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:52,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:52,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:52,734 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:52,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-28 03:45:52,822 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:45:52,822 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:52,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:45:52,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:52,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:45:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135132421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:52,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:52,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2024-11-28 03:45:52,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427288303] [2024-11-28 03:45:52,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:52,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:45:52,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:52,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:45:52,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:45:52,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:45:52,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 1571 transitions, 44723 flow. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:52,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:45:52,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:45:52,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:45:58,485 INFO L124 PetriNetUnfolderBase]: 3161/5208 cut-off events. [2024-11-28 03:45:58,485 INFO L125 PetriNetUnfolderBase]: For 227758/227758 co-relation queries the response was YES. [2024-11-28 03:45:58,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65536 conditions, 5208 events. 3161/5208 cut-off events. For 227758/227758 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 32952 event pairs, 133 based on Foata normal form. 32/5240 useless extension candidates. Maximal degree in co-relation 65327. Up to 2154 conditions per place. [2024-11-28 03:45:58,588 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 817 selfloop transitions, 848 changer transitions 0/1666 dead transitions. [2024-11-28 03:45:58,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 1666 transitions, 49649 flow [2024-11-28 03:45:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:45:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 03:45:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 216 transitions. [2024-11-28 03:45:58,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-11-28 03:45:58,590 INFO L175 Difference]: Start difference. First operand has 578 places, 1571 transitions, 44723 flow. Second operand 26 states and 216 transitions. [2024-11-28 03:45:58,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 1666 transitions, 49649 flow [2024-11-28 03:46:02,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 1666 transitions, 48769 flow, removed 375 selfloop flow, removed 8 redundant places. [2024-11-28 03:46:02,801 INFO L231 Difference]: Finished difference. Result has 597 places, 1625 transitions, 47308 flow [2024-11-28 03:46:02,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=43665, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=792, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=764, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=47308, PETRI_PLACES=597, PETRI_TRANSITIONS=1625} [2024-11-28 03:46:02,803 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 575 predicate places. [2024-11-28 03:46:02,803 INFO L471 AbstractCegarLoop]: Abstraction has has 597 places, 1625 transitions, 47308 flow [2024-11-28 03:46:02,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:02,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:46:02,803 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:02,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-28 03:46:03,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-11-28 03:46:03,004 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:46:03,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash 946543232, now seen corresponding path program 61 times [2024-11-28 03:46:03,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:03,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746613218] [2024-11-28 03:46:03,005 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:46:03,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:03,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:03,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746613218] [2024-11-28 03:46:03,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746613218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:03,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415607675] [2024-11-28 03:46:03,107 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:46:03,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:03,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:03,109 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:03,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-28 03:46:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:03,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:46:03,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:03,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:46:03,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415607675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:03,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:03,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-11-28 03:46:03,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90451575] [2024-11-28 03:46:03,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:03,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:46:03,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:03,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:46:03,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:46:03,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:46:03,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 1625 transitions, 47308 flow. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:03,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:46:03,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:46:03,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:46:08,887 INFO L124 PetriNetUnfolderBase]: 3424/5565 cut-off events. [2024-11-28 03:46:08,887 INFO L125 PetriNetUnfolderBase]: For 262062/262062 co-relation queries the response was YES. [2024-11-28 03:46:08,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73052 conditions, 5565 events. 3424/5565 cut-off events. For 262062/262062 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 35240 event pairs, 329 based on Foata normal form. 8/5573 useless extension candidates. Maximal degree in co-relation 72840. Up to 2127 conditions per place. [2024-11-28 03:46:09,025 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 811 selfloop transitions, 995 changer transitions 3/1810 dead transitions. [2024-11-28 03:46:09,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 1810 transitions, 56653 flow [2024-11-28 03:46:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:46:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 03:46:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 180 transitions. [2024-11-28 03:46:09,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-28 03:46:09,026 INFO L175 Difference]: Start difference. First operand has 597 places, 1625 transitions, 47308 flow. Second operand 21 states and 180 transitions. [2024-11-28 03:46:09,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 1810 transitions, 56653 flow [2024-11-28 03:46:13,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 1810 transitions, 56021 flow, removed 202 selfloop flow, removed 12 redundant places. [2024-11-28 03:46:13,849 INFO L231 Difference]: Finished difference. Result has 609 places, 1764 transitions, 54514 flow [2024-11-28 03:46:13,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=46676, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=872, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=54514, PETRI_PLACES=609, PETRI_TRANSITIONS=1764} [2024-11-28 03:46:13,850 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 587 predicate places. [2024-11-28 03:46:13,850 INFO L471 AbstractCegarLoop]: Abstraction has has 609 places, 1764 transitions, 54514 flow [2024-11-28 03:46:13,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:13,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:46:13,851 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:13,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-11-28 03:46:14,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2024-11-28 03:46:14,051 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:46:14,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash 918300452, now seen corresponding path program 62 times [2024-11-28 03:46:14,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:14,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469519696] [2024-11-28 03:46:14,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:46:14,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:14,064 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:46:14,064 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:14,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:14,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469519696] [2024-11-28 03:46:14,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469519696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:14,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652045609] [2024-11-28 03:46:14,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:46:14,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:14,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:14,189 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:14,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-28 03:46:14,275 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:46:14,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:14,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:46:14,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:14,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:14,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652045609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:14,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:14,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-28 03:46:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43467955] [2024-11-28 03:46:14,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:14,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:46:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:14,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:46:14,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:46:14,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:46:14,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 1764 transitions, 54514 flow. Second operand has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:14,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:46:14,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:46:14,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:46:21,304 INFO L124 PetriNetUnfolderBase]: 4155/6814 cut-off events. [2024-11-28 03:46:21,304 INFO L125 PetriNetUnfolderBase]: For 322210/322210 co-relation queries the response was YES. [2024-11-28 03:46:21,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91402 conditions, 6814 events. 4155/6814 cut-off events. For 322210/322210 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 44895 event pairs, 206 based on Foata normal form. 32/6846 useless extension candidates. Maximal degree in co-relation 91188. Up to 2722 conditions per place. [2024-11-28 03:46:21,471 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 1099 selfloop transitions, 1094 changer transitions 0/2194 dead transitions. [2024-11-28 03:46:21,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 2194 transitions, 70951 flow [2024-11-28 03:46:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 03:46:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-28 03:46:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 293 transitions. [2024-11-28 03:46:21,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40694444444444444 [2024-11-28 03:46:21,473 INFO L175 Difference]: Start difference. First operand has 609 places, 1764 transitions, 54514 flow. Second operand 36 states and 293 transitions. [2024-11-28 03:46:21,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 2194 transitions, 70951 flow [2024-11-28 03:46:27,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 2194 transitions, 69143 flow, removed 545 selfloop flow, removed 12 redundant places. [2024-11-28 03:46:27,424 INFO L231 Difference]: Finished difference. Result has 644 places, 2137 transitions, 68112 flow [2024-11-28 03:46:27,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=52718, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=741, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=953, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=68112, PETRI_PLACES=644, PETRI_TRANSITIONS=2137} [2024-11-28 03:46:27,426 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 622 predicate places. [2024-11-28 03:46:27,426 INFO L471 AbstractCegarLoop]: Abstraction has has 644 places, 2137 transitions, 68112 flow [2024-11-28 03:46:27,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:27,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:46:27,426 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:27,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-28 03:46:27,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-11-28 03:46:27,627 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:46:27,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:27,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1859019068, now seen corresponding path program 63 times [2024-11-28 03:46:27,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:27,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634643467] [2024-11-28 03:46:27,627 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:46:27,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:27,645 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:46:27,646 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634643467] [2024-11-28 03:46:27,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634643467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143616697] [2024-11-28 03:46:27,746 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:46:27,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:27,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:27,749 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:27,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-28 03:46:27,839 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:46:27,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:27,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:46:27,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:27,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:46:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143616697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:27,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:27,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2024-11-28 03:46:27,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505639220] [2024-11-28 03:46:27,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:27,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:46:27,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:27,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:46:27,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:46:27,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:46:27,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 2137 transitions, 68112 flow. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:27,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:46:27,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:46:27,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:46:37,309 INFO L124 PetriNetUnfolderBase]: 4283/7002 cut-off events. [2024-11-28 03:46:37,309 INFO L125 PetriNetUnfolderBase]: For 348689/348689 co-relation queries the response was YES. [2024-11-28 03:46:37,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96659 conditions, 7002 events. 4283/7002 cut-off events. For 348689/348689 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 46478 event pairs, 463 based on Foata normal form. 6/7008 useless extension candidates. Maximal degree in co-relation 96433. Up to 2899 conditions per place. [2024-11-28 03:46:37,557 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 954 selfloop transitions, 1296 changer transitions 6/2257 dead transitions. [2024-11-28 03:46:37,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 2257 transitions, 76005 flow [2024-11-28 03:46:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:46:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 03:46:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 183 transitions. [2024-11-28 03:46:37,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4159090909090909 [2024-11-28 03:46:37,558 INFO L175 Difference]: Start difference. First operand has 644 places, 2137 transitions, 68112 flow. Second operand 22 states and 183 transitions. [2024-11-28 03:46:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 2257 transitions, 76005 flow [2024-11-28 03:46:45,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 2257 transitions, 75437 flow, removed 237 selfloop flow, removed 10 redundant places. [2024-11-28 03:46:45,738 INFO L231 Difference]: Finished difference. Result has 661 places, 2204 transitions, 73993 flow [2024-11-28 03:46:45,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=67568, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=873, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=73993, PETRI_PLACES=661, PETRI_TRANSITIONS=2204} [2024-11-28 03:46:45,739 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 639 predicate places. [2024-11-28 03:46:45,740 INFO L471 AbstractCegarLoop]: Abstraction has has 661 places, 2204 transitions, 73993 flow [2024-11-28 03:46:45,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:45,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:46:45,740 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:45,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-11-28 03:46:45,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:45,941 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:46:45,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:45,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1362862848, now seen corresponding path program 64 times [2024-11-28 03:46:45,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:45,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67029051] [2024-11-28 03:46:45,941 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:46:45,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:45,953 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:46:45,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:46,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67029051] [2024-11-28 03:46:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67029051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255105332] [2024-11-28 03:46:46,071 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:46:46,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:46,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:46,075 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:46,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-28 03:46:46,178 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:46:46,178 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:46,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:46:46,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:46,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:46,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255105332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:46,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:46,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-28 03:46:46,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148474701] [2024-11-28 03:46:46,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:46,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:46:46,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:46,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:46:46,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:46:46,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:46:46,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 2204 transitions, 73993 flow. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:46:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:46:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:46:54,285 INFO L124 PetriNetUnfolderBase]: 4411/7190 cut-off events. [2024-11-28 03:46:54,285 INFO L125 PetriNetUnfolderBase]: For 388685/388685 co-relation queries the response was YES. [2024-11-28 03:46:54,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103475 conditions, 7190 events. 4411/7190 cut-off events. For 388685/388685 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 47715 event pairs, 465 based on Foata normal form. 6/7196 useless extension candidates. Maximal degree in co-relation 103242. Up to 2937 conditions per place. [2024-11-28 03:46:54,511 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 1032 selfloop transitions, 1281 changer transitions 10/2324 dead transitions. [2024-11-28 03:46:54,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 2324 transitions, 82252 flow [2024-11-28 03:46:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:46:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 03:46:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 161 transitions. [2024-11-28 03:46:54,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-11-28 03:46:54,513 INFO L175 Difference]: Start difference. First operand has 661 places, 2204 transitions, 73993 flow. Second operand 20 states and 161 transitions. [2024-11-28 03:46:54,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 2324 transitions, 82252 flow [2024-11-28 03:47:03,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 2324 transitions, 80850 flow, removed 327 selfloop flow, removed 13 redundant places. [2024-11-28 03:47:03,195 INFO L231 Difference]: Finished difference. Result has 673 places, 2273 transitions, 79204 flow [2024-11-28 03:47:03,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=72779, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=943, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=79204, PETRI_PLACES=673, PETRI_TRANSITIONS=2273} [2024-11-28 03:47:03,197 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 651 predicate places. [2024-11-28 03:47:03,197 INFO L471 AbstractCegarLoop]: Abstraction has has 673 places, 2273 transitions, 79204 flow [2024-11-28 03:47:03,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:03,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:47:03,197 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:03,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-28 03:47:03,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:03,398 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:47:03,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:03,398 INFO L85 PathProgramCache]: Analyzing trace with hash 206773312, now seen corresponding path program 65 times [2024-11-28 03:47:03,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:03,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564644239] [2024-11-28 03:47:03,399 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:47:03,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:03,415 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:47:03,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:47:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:47:03,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564644239] [2024-11-28 03:47:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564644239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944205865] [2024-11-28 03:47:03,485 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:47:03,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:03,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:03,486 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:03,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4567a2-f8e0-49b4-986e-1daa7d27056f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-28 03:47:03,556 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:47:03,556 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:47:03,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:47:03,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:47:03,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:47:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:47:03,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944205865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:47:03,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:47:03,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2024-11-28 03:47:03,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763962083] [2024-11-28 03:47:03,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:47:03,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:47:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:03,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:47:03,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:47:03,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-28 03:47:03,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 2273 transitions, 79204 flow. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 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) [2024-11-28 03:47:03,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:47:03,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-28 03:47:03,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:47:11,815 INFO L124 PetriNetUnfolderBase]: 4855/7866 cut-off events. [2024-11-28 03:47:11,815 INFO L125 PetriNetUnfolderBase]: For 452841/452841 co-relation queries the response was YES. [2024-11-28 03:47:12,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117040 conditions, 7866 events. 4855/7866 cut-off events. For 452841/452841 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 52317 event pairs, 188 based on Foata normal form. 38/7904 useless extension candidates. Maximal degree in co-relation 116801. Up to 2434 conditions per place. [2024-11-28 03:47:12,164 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 925 selfloop transitions, 1628 changer transitions 0/2554 dead transitions. [2024-11-28 03:47:12,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 2554 transitions, 93999 flow [2024-11-28 03:47:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:47:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 03:47:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 204 transitions. [2024-11-28 03:47:12,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-28 03:47:12,165 INFO L175 Difference]: Start difference. First operand has 673 places, 2273 transitions, 79204 flow. Second operand 24 states and 204 transitions. [2024-11-28 03:47:12,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 2554 transitions, 93999 flow