./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/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_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/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_d12de65a-72bf-4dff-911a-07009383b1b2/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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:16:45,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:16:45,435 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:16:45,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:16:45,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:16:45,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:16:45,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:16:45,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:16:45,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:16:45,484 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:16:45,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:16:45,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:16:45,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:16:45,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:16:45,485 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:16:45,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:16:45,485 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:16:45,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:16:45,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:16:45,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:16:45,486 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:16:45,487 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:16:45,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:16:45,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:16:45,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:16:45,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:16:45,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:16:45,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:16:45,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:16:45,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:16:45,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:16:45,489 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_d12de65a-72bf-4dff-911a-07009383b1b2/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 -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-11-28 04:16:45,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:16:45,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:16:45,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:16:45,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:16:45,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:16:45,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-28 04:16:48,769 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/data/72554c78d/8aae7078fa244ba897932df858affaf1/FLAG787163bd2 [2024-11-28 04:16:49,128 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:16:49,128 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-28 04:16:49,151 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/data/72554c78d/8aae7078fa244ba897932df858affaf1/FLAG787163bd2 [2024-11-28 04:16:49,170 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/data/72554c78d/8aae7078fa244ba897932df858affaf1 [2024-11-28 04:16:49,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:16:49,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:16:49,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:16:49,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:16:49,181 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:16:49,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c1cf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49, skipping insertion in model container [2024-11-28 04:16:49,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:16:49,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:16:49,420 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:16:49,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:16:49,461 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:16:49,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49 WrapperNode [2024-11-28 04:16:49,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:16:49,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:16:49,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:16:49,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:16:49,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,499 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-11-28 04:16:49,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:16:49,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:16:49,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:16:49,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:16:49,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,533 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 04:16:49,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,541 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,542 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:16:49,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:16:49,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:16:49,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:16:49,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (1/1) ... [2024-11-28 04:16:49,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:16:49,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:49,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:16:49,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:16:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:16:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:16:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:16:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:16:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:16:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:16:49,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:16:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:16:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:16:49,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:16:49,628 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 04:16:49,714 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:16:49,716 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:16:49,920 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:16:49,920 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:16:50,106 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:16:50,110 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:16:50,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:16:50 BoogieIcfgContainer [2024-11-28 04:16:50,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:16:50,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:16:50,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:16:50,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:16:50,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:16:49" (1/3) ... [2024-11-28 04:16:50,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3ad152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:16:50, skipping insertion in model container [2024-11-28 04:16:50,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:49" (2/3) ... [2024-11-28 04:16:50,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3ad152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:16:50, skipping insertion in model container [2024-11-28 04:16:50,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:16:50" (3/3) ... [2024-11-28 04:16:50,125 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-11-28 04:16:50,145 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:16:50,146 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-flipped-dist.wvr.c that has 4 procedures, 25 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-11-28 04:16:50,147 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:16:50,222 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:16:50,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-11-28 04:16:50,297 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-11-28 04:16:50,301 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 04:16:50,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-28 04:16:50,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-11-28 04:16:50,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-11-28 04:16:50,326 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:16:50,349 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;@2f090ca5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:16:50,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 04:16:50,368 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:16:50,368 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-28 04:16:50,368 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 04:16:50,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:50,369 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:50,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:50,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:50,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2080883098, now seen corresponding path program 1 times [2024-11-28 04:16:50,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:50,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202455258] [2024-11-28 04:16:50,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:50,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:51,443 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 04:16:51,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202455258] [2024-11-28 04:16:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202455258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:51,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:51,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:16:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494911857] [2024-11-28 04:16:51,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:51,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:51,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:51,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:16:51,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:51,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:51,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:51,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:51,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:51,817 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-11-28 04:16:51,818 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-28 04:16:51,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1790 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-28 04:16:51,830 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-11-28 04:16:51,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-11-28 04:16:51,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:16:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-28 04:16:51,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 04:16:51,849 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2024-11-28 04:16:51,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-11-28 04:16:51,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 04:16:51,863 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-11-28 04:16:51,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-11-28 04:16:51,871 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-11-28 04:16:51,871 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-11-28 04:16:51,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:51,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:51,874 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:51,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:16:51,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:51,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1825454537, now seen corresponding path program 1 times [2024-11-28 04:16:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:51,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472977288] [2024-11-28 04:16:51,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:51,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:52,133 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 04:16:52,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:52,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472977288] [2024-11-28 04:16:52,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472977288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:52,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:52,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:16:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078904314] [2024-11-28 04:16:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:52,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:52,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:52,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:52,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:52,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:52,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:52,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:52,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:52,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:52,466 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-11-28 04:16:52,466 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-28 04:16:52,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2446 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-11-28 04:16:52,474 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-28 04:16:52,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-11-28 04:16:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:16:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-28 04:16:52,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-11-28 04:16:52,478 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2024-11-28 04:16:52,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-11-28 04:16:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:52,482 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-11-28 04:16:52,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-11-28 04:16:52,484 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-28 04:16:52,484 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-11-28 04:16:52,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:52,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:52,485 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:52,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:16:52,485 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:52,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1236434741, now seen corresponding path program 2 times [2024-11-28 04:16:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157249100] [2024-11-28 04:16:52,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:52,513 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:16:52,513 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:52,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:52,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157249100] [2024-11-28 04:16:52,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157249100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:52,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106823065] [2024-11-28 04:16:52,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:52,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:52,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:52,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:52,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:16:52,968 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:16:52,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:52,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:16:52,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:53,049 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 04:16:53,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:53,145 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 04:16:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106823065] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:16:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 8 [2024-11-28 04:16:53,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403701462] [2024-11-28 04:16:53,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:53,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:53,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:53,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:16:53,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:53,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:53,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:53,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:53,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:53,463 INFO L124 PetriNetUnfolderBase]: 602/856 cut-off events. [2024-11-28 04:16:53,463 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-11-28 04:16:53,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2763 conditions, 856 events. 602/856 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2920 event pairs, 136 based on Foata normal form. 31/887 useless extension candidates. Maximal degree in co-relation 2057. Up to 488 conditions per place. [2024-11-28 04:16:53,473 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 57 selfloop transitions, 9 changer transitions 1/68 dead transitions. [2024-11-28 04:16:53,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 68 transitions, 428 flow [2024-11-28 04:16:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:16:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-28 04:16:53,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-28 04:16:53,475 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 4 states and 69 transitions. [2024-11-28 04:16:53,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 68 transitions, 428 flow [2024-11-28 04:16:53,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 68 transitions, 410 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-28 04:16:53,482 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 209 flow [2024-11-28 04:16:53,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-11-28 04:16:53,483 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-11-28 04:16:53,483 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 209 flow [2024-11-28 04:16:53,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:53,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:53,483 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:53,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:16:53,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:53,688 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:53,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash 568827867, now seen corresponding path program 3 times [2024-11-28 04:16:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:53,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872391091] [2024-11-28 04:16:53,689 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:53,720 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:16:53,723 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:53,845 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 04:16:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:53,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872391091] [2024-11-28 04:16:53,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872391091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:53,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:53,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375642619] [2024-11-28 04:16:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:53,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:53,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:53,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:53,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:53,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:53,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:53,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:53,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:54,169 INFO L124 PetriNetUnfolderBase]: 703/1017 cut-off events. [2024-11-28 04:16:54,170 INFO L125 PetriNetUnfolderBase]: For 1828/1828 co-relation queries the response was YES. [2024-11-28 04:16:54,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3528 conditions, 1017 events. 703/1017 cut-off events. For 1828/1828 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3743 event pairs, 170 based on Foata normal form. 38/1055 useless extension candidates. Maximal degree in co-relation 2403. Up to 509 conditions per place. [2024-11-28 04:16:54,182 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 53 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-11-28 04:16:54,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 66 transitions, 453 flow [2024-11-28 04:16:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:16:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-28 04:16:54,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-28 04:16:54,187 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 209 flow. Second operand 4 states and 65 transitions. [2024-11-28 04:16:54,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 66 transitions, 453 flow [2024-11-28 04:16:54,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 444 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:54,198 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 268 flow [2024-11-28 04:16:54,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-11-28 04:16:54,199 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-11-28 04:16:54,199 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 268 flow [2024-11-28 04:16:54,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:54,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:54,200 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:54,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:16:54,200 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:54,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1719215873, now seen corresponding path program 1 times [2024-11-28 04:16:54,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:54,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021261349] [2024-11-28 04:16:54,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:54,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:54,395 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 04:16:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021261349] [2024-11-28 04:16:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021261349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:16:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309415927] [2024-11-28 04:16:54,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:54,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:54,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:54,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:54,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:54,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:54,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:54,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:54,794 INFO L124 PetriNetUnfolderBase]: 743/1131 cut-off events. [2024-11-28 04:16:54,795 INFO L125 PetriNetUnfolderBase]: For 3928/3928 co-relation queries the response was YES. [2024-11-28 04:16:54,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4369 conditions, 1131 events. 743/1131 cut-off events. For 3928/3928 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4674 event pairs, 224 based on Foata normal form. 75/1206 useless extension candidates. Maximal degree in co-relation 3160. Up to 586 conditions per place. [2024-11-28 04:16:54,804 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 60 selfloop transitions, 10 changer transitions 6/77 dead transitions. [2024-11-28 04:16:54,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 619 flow [2024-11-28 04:16:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:54,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:16:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-28 04:16:54,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-28 04:16:54,806 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 268 flow. Second operand 5 states and 81 transitions. [2024-11-28 04:16:54,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 619 flow [2024-11-28 04:16:54,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 77 transitions, 561 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:54,815 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 295 flow [2024-11-28 04:16:54,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-11-28 04:16:54,816 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-11-28 04:16:54,817 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 295 flow [2024-11-28 04:16:54,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:54,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:54,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:54,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:16:54,818 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:54,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1295896987, now seen corresponding path program 4 times [2024-11-28 04:16:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:54,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667866074] [2024-11-28 04:16:54,819 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:16:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:54,835 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:16:54,835 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:54,972 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 04:16:54,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667866074] [2024-11-28 04:16:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667866074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:54,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989797770] [2024-11-28 04:16:54,973 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:16:54,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:54,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:54,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:54,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:16:55,054 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:16:55,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:55,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:16:55,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:55,127 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 04:16:55,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:55,217 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 04:16:55,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989797770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:55,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:55,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 04:16:55,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239214538] [2024-11-28 04:16:55,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:55,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:16:55,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:55,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:16:55,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:16:55,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:55,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 295 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 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 04:16:55,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:55,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:55,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:55,651 INFO L124 PetriNetUnfolderBase]: 794/1183 cut-off events. [2024-11-28 04:16:55,651 INFO L125 PetriNetUnfolderBase]: For 4053/4053 co-relation queries the response was YES. [2024-11-28 04:16:55,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5018 conditions, 1183 events. 794/1183 cut-off events. For 4053/4053 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4648 event pairs, 265 based on Foata normal form. 53/1236 useless extension candidates. Maximal degree in co-relation 2420. Up to 727 conditions per place. [2024-11-28 04:16:55,661 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 57 selfloop transitions, 31 changer transitions 9/98 dead transitions. [2024-11-28 04:16:55,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 98 transitions, 851 flow [2024-11-28 04:16:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:16:55,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-11-28 04:16:55,662 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5608465608465608 [2024-11-28 04:16:55,663 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 295 flow. Second operand 7 states and 106 transitions. [2024-11-28 04:16:55,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 98 transitions, 851 flow [2024-11-28 04:16:55,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 98 transitions, 798 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:55,674 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 535 flow [2024-11-28 04:16:55,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2024-11-28 04:16:55,675 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-11-28 04:16:55,675 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 535 flow [2024-11-28 04:16:55,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 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 04:16:55,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:55,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:55,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:16:55,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:55,876 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:55,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash -624238386, now seen corresponding path program 1 times [2024-11-28 04:16:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247119049] [2024-11-28 04:16:55,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:56,001 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 04:16:56,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:56,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247119049] [2024-11-28 04:16:56,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247119049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:56,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135251438] [2024-11-28 04:16:56,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:56,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:56,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:56,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:56,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:16:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:56,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:16:56,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:56,120 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 04:16:56,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:56,169 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 04:16:56,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135251438] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:56,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:16:56,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-11-28 04:16:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355053153] [2024-11-28 04:16:56,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:56,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:56,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:56,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:16:56,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:56,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:56,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:56,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:56,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:56,419 INFO L124 PetriNetUnfolderBase]: 765/1131 cut-off events. [2024-11-28 04:16:56,419 INFO L125 PetriNetUnfolderBase]: For 4934/4934 co-relation queries the response was YES. [2024-11-28 04:16:56,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5388 conditions, 1131 events. 765/1131 cut-off events. For 4934/4934 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4429 event pairs, 132 based on Foata normal form. 20/1151 useless extension candidates. Maximal degree in co-relation 4405. Up to 850 conditions per place. [2024-11-28 04:16:56,430 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 66 selfloop transitions, 17 changer transitions 4/88 dead transitions. [2024-11-28 04:16:56,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 88 transitions, 911 flow [2024-11-28 04:16:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:16:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-28 04:16:56,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-28 04:16:56,431 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 535 flow. Second operand 4 states and 65 transitions. [2024-11-28 04:16:56,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 88 transitions, 911 flow [2024-11-28 04:16:56,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 863 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:56,449 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 613 flow [2024-11-28 04:16:56,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=613, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2024-11-28 04:16:56,452 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-11-28 04:16:56,452 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 613 flow [2024-11-28 04:16:56,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:56,452 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:56,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:56,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:16:56,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:16:56,653 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:56,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash -576427006, now seen corresponding path program 2 times [2024-11-28 04:16:56,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:56,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455545527] [2024-11-28 04:16:56,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:56,676 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:16:56,676 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:56,735 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 04:16:56,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:56,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455545527] [2024-11-28 04:16:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455545527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:56,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:56,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977814570] [2024-11-28 04:16:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:56,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:56,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:56,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:56,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:56,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:56,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:56,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:56,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:56,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:57,045 INFO L124 PetriNetUnfolderBase]: 940/1416 cut-off events. [2024-11-28 04:16:57,046 INFO L125 PetriNetUnfolderBase]: For 7494/7494 co-relation queries the response was YES. [2024-11-28 04:16:57,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 1416 events. 940/1416 cut-off events. For 7494/7494 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5859 event pairs, 313 based on Foata normal form. 62/1478 useless extension candidates. Maximal degree in co-relation 5598. Up to 995 conditions per place. [2024-11-28 04:16:57,057 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 93 selfloop transitions, 9 changer transitions 7/110 dead transitions. [2024-11-28 04:16:57,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 110 transitions, 1250 flow [2024-11-28 04:16:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:16:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-28 04:16:57,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-28 04:16:57,059 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 613 flow. Second operand 4 states and 62 transitions. [2024-11-28 04:16:57,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 110 transitions, 1250 flow [2024-11-28 04:16:57,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 110 transitions, 1235 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:57,071 INFO L231 Difference]: Finished difference. Result has 57 places, 67 transitions, 696 flow [2024-11-28 04:16:57,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=696, PETRI_PLACES=57, PETRI_TRANSITIONS=67} [2024-11-28 04:16:57,073 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-11-28 04:16:57,073 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 67 transitions, 696 flow [2024-11-28 04:16:57,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:57,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:57,073 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:57,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:16:57,073 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:57,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1567122758, now seen corresponding path program 3 times [2024-11-28 04:16:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:57,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270940401] [2024-11-28 04:16:57,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:57,095 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:16:57,095 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:57,168 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 04:16:57,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:57,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270940401] [2024-11-28 04:16:57,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270940401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:57,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:57,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127403041] [2024-11-28 04:16:57,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:57,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:57,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:57,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:57,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:57,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:57,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 67 transitions, 696 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:57,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:57,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:57,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:57,451 INFO L124 PetriNetUnfolderBase]: 960/1412 cut-off events. [2024-11-28 04:16:57,451 INFO L125 PetriNetUnfolderBase]: For 7948/7948 co-relation queries the response was YES. [2024-11-28 04:16:57,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7761 conditions, 1412 events. 960/1412 cut-off events. For 7948/7948 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5639 event pairs, 333 based on Foata normal form. 28/1440 useless extension candidates. Maximal degree in co-relation 6919. Up to 980 conditions per place. [2024-11-28 04:16:57,465 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 60 selfloop transitions, 34 changer transitions 5/100 dead transitions. [2024-11-28 04:16:57,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 1194 flow [2024-11-28 04:16:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:16:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-28 04:16:57,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-28 04:16:57,467 INFO L175 Difference]: Start difference. First operand has 57 places, 67 transitions, 696 flow. Second operand 4 states and 64 transitions. [2024-11-28 04:16:57,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 1194 flow [2024-11-28 04:16:57,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 1163 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:57,485 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 914 flow [2024-11-28 04:16:57,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2024-11-28 04:16:57,486 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-11-28 04:16:57,486 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 914 flow [2024-11-28 04:16:57,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:57,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:57,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:57,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:16:57,487 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:57,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash -881966641, now seen corresponding path program 1 times [2024-11-28 04:16:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:57,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42772966] [2024-11-28 04:16:57,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42772966] [2024-11-28 04:16:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42772966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643784183] [2024-11-28 04:16:57,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:57,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:57,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:57,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:57,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:16:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:57,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:16:57,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:57,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:57,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643784183] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:57,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:16:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-11-28 04:16:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232433280] [2024-11-28 04:16:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:57,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:57,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:57,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:57,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:16:57,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:57,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 04:16:57,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:57,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:57,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:58,153 INFO L124 PetriNetUnfolderBase]: 1046/1517 cut-off events. [2024-11-28 04:16:58,154 INFO L125 PetriNetUnfolderBase]: For 10251/10251 co-relation queries the response was YES. [2024-11-28 04:16:58,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8979 conditions, 1517 events. 1046/1517 cut-off events. For 10251/10251 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5993 event pairs, 212 based on Foata normal form. 49/1566 useless extension candidates. Maximal degree in co-relation 8347. Up to 1261 conditions per place. [2024-11-28 04:16:58,169 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 88 selfloop transitions, 15 changer transitions 1/105 dead transitions. [2024-11-28 04:16:58,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 105 transitions, 1389 flow [2024-11-28 04:16:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:16:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-28 04:16:58,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-28 04:16:58,170 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 914 flow. Second operand 4 states and 63 transitions. [2024-11-28 04:16:58,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 105 transitions, 1389 flow [2024-11-28 04:16:58,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 105 transitions, 1349 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 04:16:58,188 INFO L231 Difference]: Finished difference. Result has 61 places, 80 transitions, 983 flow [2024-11-28 04:16:58,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=983, PETRI_PLACES=61, PETRI_TRANSITIONS=80} [2024-11-28 04:16:58,189 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-11-28 04:16:58,189 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 80 transitions, 983 flow [2024-11-28 04:16:58,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 04:16:58,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:58,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:58,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:16:58,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:16:58,390 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:58,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash -888991901, now seen corresponding path program 2 times [2024-11-28 04:16:58,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:58,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494032242] [2024-11-28 04:16:58,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:58,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:58,407 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:16:58,409 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:58,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:58,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:58,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494032242] [2024-11-28 04:16:58,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494032242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:58,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461254277] [2024-11-28 04:16:58,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:16:58,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:58,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:58,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:58,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:16:58,690 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:16:58,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:58,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:16:58,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:58,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:58,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461254277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:58,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:58,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-11-28 04:16:58,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98332887] [2024-11-28 04:16:58,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:58,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:16:58,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:58,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:16:58,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:16:58,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:58,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 80 transitions, 983 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 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 04:16:58,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:58,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:58,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:16:59,331 INFO L124 PetriNetUnfolderBase]: 1347/1944 cut-off events. [2024-11-28 04:16:59,331 INFO L125 PetriNetUnfolderBase]: For 15379/15379 co-relation queries the response was YES. [2024-11-28 04:16:59,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11758 conditions, 1944 events. 1347/1944 cut-off events. For 15379/15379 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8065 event pairs, 279 based on Foata normal form. 37/1981 useless extension candidates. Maximal degree in co-relation 8088. Up to 1067 conditions per place. [2024-11-28 04:16:59,351 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 123 selfloop transitions, 69 changer transitions 3/196 dead transitions. [2024-11-28 04:16:59,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 196 transitions, 2675 flow [2024-11-28 04:16:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:16:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:16:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-11-28 04:16:59,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-11-28 04:16:59,352 INFO L175 Difference]: Start difference. First operand has 61 places, 80 transitions, 983 flow. Second operand 10 states and 136 transitions. [2024-11-28 04:16:59,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 196 transitions, 2675 flow [2024-11-28 04:16:59,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 196 transitions, 2651 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 04:16:59,379 INFO L231 Difference]: Finished difference. Result has 74 places, 127 transitions, 1863 flow [2024-11-28 04:16:59,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1863, PETRI_PLACES=74, PETRI_TRANSITIONS=127} [2024-11-28 04:16:59,380 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-11-28 04:16:59,380 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 127 transitions, 1863 flow [2024-11-28 04:16:59,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 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 04:16:59,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:16:59,381 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:59,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:16:59,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:16:59,582 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:16:59,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1391386359, now seen corresponding path program 3 times [2024-11-28 04:16:59,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:59,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426151851] [2024-11-28 04:16:59,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:59,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:59,597 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:16:59,597 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:59,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:59,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426151851] [2024-11-28 04:16:59,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426151851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:59,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105644999] [2024-11-28 04:16:59,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:16:59,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:59,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:59,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:59,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:16:59,852 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:16:59,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:16:59,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:16:59,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:59,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:16:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105644999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:59,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:59,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 04:16:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726099071] [2024-11-28 04:16:59,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:59,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:16:59,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:59,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:16:59,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:16:59,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:16:59,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 127 transitions, 1863 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 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 04:16:59,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:16:59,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:16:59,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:00,490 INFO L124 PetriNetUnfolderBase]: 1325/1892 cut-off events. [2024-11-28 04:17:00,494 INFO L125 PetriNetUnfolderBase]: For 20143/20143 co-relation queries the response was YES. [2024-11-28 04:17:00,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12877 conditions, 1892 events. 1325/1892 cut-off events. For 20143/20143 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7570 event pairs, 299 based on Foata normal form. 45/1937 useless extension candidates. Maximal degree in co-relation 12181. Up to 1217 conditions per place. [2024-11-28 04:17:00,521 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 111 selfloop transitions, 77 changer transitions 1/190 dead transitions. [2024-11-28 04:17:00,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 190 transitions, 3019 flow [2024-11-28 04:17:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:17:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:17:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-11-28 04:17:00,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2024-11-28 04:17:00,523 INFO L175 Difference]: Start difference. First operand has 74 places, 127 transitions, 1863 flow. Second operand 7 states and 97 transitions. [2024-11-28 04:17:00,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 190 transitions, 3019 flow [2024-11-28 04:17:00,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 190 transitions, 2863 flow, removed 78 selfloop flow, removed 0 redundant places. [2024-11-28 04:17:00,580 INFO L231 Difference]: Finished difference. Result has 84 places, 152 transitions, 2414 flow [2024-11-28 04:17:00,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2414, PETRI_PLACES=84, PETRI_TRANSITIONS=152} [2024-11-28 04:17:00,582 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-11-28 04:17:00,582 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 152 transitions, 2414 flow [2024-11-28 04:17:00,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 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 04:17:00,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:00,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:00,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:17:00,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:00,785 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:00,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -803799688, now seen corresponding path program 1 times [2024-11-28 04:17:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:00,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740507838] [2024-11-28 04:17:00,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:01,108 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 04:17:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740507838] [2024-11-28 04:17:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740507838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217343181] [2024-11-28 04:17:01,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:01,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:01,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:01,112 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:01,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:17:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:01,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:17:01,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:01,361 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 04:17:01,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:02,184 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 04:17:02,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217343181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:02,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-28 04:17:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645539577] [2024-11-28 04:17:02,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:02,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:17:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:02,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:17:02,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:17:02,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:02,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 152 transitions, 2414 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 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 04:17:02,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:02,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:02,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:02,984 INFO L124 PetriNetUnfolderBase]: 1904/2733 cut-off events. [2024-11-28 04:17:02,984 INFO L125 PetriNetUnfolderBase]: For 26878/26878 co-relation queries the response was YES. [2024-11-28 04:17:02,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 2733 events. 1904/2733 cut-off events. For 26878/26878 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 11638 event pairs, 198 based on Foata normal form. 2/2735 useless extension candidates. Maximal degree in co-relation 17955. Up to 2028 conditions per place. [2024-11-28 04:17:03,012 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 185 selfloop transitions, 73 changer transitions 2/261 dead transitions. [2024-11-28 04:17:03,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 261 transitions, 4014 flow [2024-11-28 04:17:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:17:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:17:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-11-28 04:17:03,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2024-11-28 04:17:03,014 INFO L175 Difference]: Start difference. First operand has 84 places, 152 transitions, 2414 flow. Second operand 9 states and 143 transitions. [2024-11-28 04:17:03,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 261 transitions, 4014 flow [2024-11-28 04:17:03,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 261 transitions, 3729 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-11-28 04:17:03,090 INFO L231 Difference]: Finished difference. Result has 90 places, 199 transitions, 3160 flow [2024-11-28 04:17:03,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3160, PETRI_PLACES=90, PETRI_TRANSITIONS=199} [2024-11-28 04:17:03,091 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-11-28 04:17:03,091 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 199 transitions, 3160 flow [2024-11-28 04:17:03,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 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 04:17:03,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:03,092 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:03,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:17:03,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:03,296 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:03,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash -886774996, now seen corresponding path program 2 times [2024-11-28 04:17:03,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:03,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515902260] [2024-11-28 04:17:03,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:17:03,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:03,311 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:03,313 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:03,562 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 04:17:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515902260] [2024-11-28 04:17:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515902260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644506504] [2024-11-28 04:17:03,563 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:17:03,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:03,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:03,565 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:03,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:17:03,638 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:03,638 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:03,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:17:03,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:03,785 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 04:17:03,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:04,614 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 04:17:04,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644506504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:04,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:04,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-28 04:17:04,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328685556] [2024-11-28 04:17:04,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:04,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:17:04,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:04,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:17:04,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:17:04,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:04,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 199 transitions, 3160 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:04,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:04,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:04,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:05,373 INFO L124 PetriNetUnfolderBase]: 2214/3183 cut-off events. [2024-11-28 04:17:05,373 INFO L125 PetriNetUnfolderBase]: For 30852/30852 co-relation queries the response was YES. [2024-11-28 04:17:05,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21923 conditions, 3183 events. 2214/3183 cut-off events. For 30852/30852 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13875 event pairs, 323 based on Foata normal form. 2/3183 useless extension candidates. Maximal degree in co-relation 21329. Up to 2549 conditions per place. [2024-11-28 04:17:05,465 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 205 selfloop transitions, 68 changer transitions 2/276 dead transitions. [2024-11-28 04:17:05,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 276 transitions, 4318 flow [2024-11-28 04:17:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:17:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:17:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-28 04:17:05,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-28 04:17:05,467 INFO L175 Difference]: Start difference. First operand has 90 places, 199 transitions, 3160 flow. Second operand 9 states and 140 transitions. [2024-11-28 04:17:05,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 276 transitions, 4318 flow [2024-11-28 04:17:05,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 276 transitions, 4056 flow, removed 131 selfloop flow, removed 0 redundant places. [2024-11-28 04:17:05,560 INFO L231 Difference]: Finished difference. Result has 101 places, 219 transitions, 3389 flow [2024-11-28 04:17:05,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3389, PETRI_PLACES=101, PETRI_TRANSITIONS=219} [2024-11-28 04:17:05,561 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-11-28 04:17:05,562 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 219 transitions, 3389 flow [2024-11-28 04:17:05,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:05,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:05,562 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:05,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:17:05,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:17:05,767 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:05,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:05,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1254584968, now seen corresponding path program 3 times [2024-11-28 04:17:05,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:05,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039686295] [2024-11-28 04:17:05,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:17:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:05,781 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:17:05,781 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:05,999 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 04:17:05,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:05,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039686295] [2024-11-28 04:17:05,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039686295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:06,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466761258] [2024-11-28 04:17:06,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:17:06,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:06,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:06,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:06,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:17:06,072 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:17:06,072 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:06,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:17:06,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:06,191 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 04:17:06,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:06,826 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 04:17:06,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466761258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:06,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:06,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-28 04:17:06,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670055520] [2024-11-28 04:17:06,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:06,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:17:06,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:06,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:17:06,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:17:06,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:06,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 219 transitions, 3389 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:06,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:06,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:06,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:07,748 INFO L124 PetriNetUnfolderBase]: 2725/3927 cut-off events. [2024-11-28 04:17:07,748 INFO L125 PetriNetUnfolderBase]: For 39283/39283 co-relation queries the response was YES. [2024-11-28 04:17:07,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26655 conditions, 3927 events. 2725/3927 cut-off events. For 39283/39283 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 17805 event pairs, 468 based on Foata normal form. 2/3927 useless extension candidates. Maximal degree in co-relation 26195. Up to 3292 conditions per place. [2024-11-28 04:17:07,792 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 245 selfloop transitions, 74 changer transitions 2/322 dead transitions. [2024-11-28 04:17:07,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 322 transitions, 5159 flow [2024-11-28 04:17:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:17:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:17:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-28 04:17:07,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-28 04:17:07,794 INFO L175 Difference]: Start difference. First operand has 101 places, 219 transitions, 3389 flow. Second operand 9 states and 140 transitions. [2024-11-28 04:17:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 322 transitions, 5159 flow [2024-11-28 04:17:07,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 322 transitions, 4920 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-11-28 04:17:07,920 INFO L231 Difference]: Finished difference. Result has 111 places, 267 transitions, 4250 flow [2024-11-28 04:17:07,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3150, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4250, PETRI_PLACES=111, PETRI_TRANSITIONS=267} [2024-11-28 04:17:07,920 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-11-28 04:17:07,921 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 267 transitions, 4250 flow [2024-11-28 04:17:07,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:07,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:07,921 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:07,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:17:08,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:17:08,126 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:08,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1343808888, now seen corresponding path program 4 times [2024-11-28 04:17:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:08,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554277172] [2024-11-28 04:17:08,127 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:17:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:08,138 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:17:08,139 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:08,353 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 04:17:08,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:08,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554277172] [2024-11-28 04:17:08,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554277172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:08,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104290333] [2024-11-28 04:17:08,353 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:17:08,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:08,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:08,356 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:08,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:17:08,423 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:17:08,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:08,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:17:08,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:08,518 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 04:17:08,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:09,190 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 04:17:09,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104290333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:09,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:09,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-28 04:17:09,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956883245] [2024-11-28 04:17:09,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:09,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:17:09,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:09,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:17:09,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:17:09,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:09,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 267 transitions, 4250 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:09,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:09,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:09,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:09,959 INFO L124 PetriNetUnfolderBase]: 3005/4335 cut-off events. [2024-11-28 04:17:09,959 INFO L125 PetriNetUnfolderBase]: For 45554/45554 co-relation queries the response was YES. [2024-11-28 04:17:09,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29658 conditions, 4335 events. 3005/4335 cut-off events. For 45554/45554 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20007 event pairs, 582 based on Foata normal form. 2/4337 useless extension candidates. Maximal degree in co-relation 29166. Up to 3819 conditions per place. [2024-11-28 04:17:10,004 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 264 selfloop transitions, 67 changer transitions 2/334 dead transitions. [2024-11-28 04:17:10,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 334 transitions, 5563 flow [2024-11-28 04:17:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:17:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:17:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-11-28 04:17:10,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2024-11-28 04:17:10,006 INFO L175 Difference]: Start difference. First operand has 111 places, 267 transitions, 4250 flow. Second operand 9 states and 136 transitions. [2024-11-28 04:17:10,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 334 transitions, 5563 flow [2024-11-28 04:17:10,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 334 transitions, 5195 flow, removed 171 selfloop flow, removed 1 redundant places. [2024-11-28 04:17:10,156 INFO L231 Difference]: Finished difference. Result has 121 places, 286 transitions, 4422 flow [2024-11-28 04:17:10,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3882, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4422, PETRI_PLACES=121, PETRI_TRANSITIONS=286} [2024-11-28 04:17:10,157 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-11-28 04:17:10,157 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 286 transitions, 4422 flow [2024-11-28 04:17:10,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:10,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:10,158 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:10,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:17:10,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:17:10,358 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:10,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:10,359 INFO L85 PathProgramCache]: Analyzing trace with hash -993200268, now seen corresponding path program 5 times [2024-11-28 04:17:10,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:10,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87186646] [2024-11-28 04:17:10,359 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:17:10,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:10,372 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:10,372 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:10,551 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 04:17:10,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:10,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87186646] [2024-11-28 04:17:10,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87186646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:10,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819162437] [2024-11-28 04:17:10,552 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:17:10,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:10,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:10,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:10,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:17:10,630 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:10,631 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:10,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:17:10,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:10,765 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 04:17:10,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:13,023 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 04:17:13,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819162437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:13,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-28 04:17:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691495330] [2024-11-28 04:17:13,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:13,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:17:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:13,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:17:13,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:17:13,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:13,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 286 transitions, 4422 flow. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:13,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:13,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:13,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:13,852 INFO L124 PetriNetUnfolderBase]: 3389/4884 cut-off events. [2024-11-28 04:17:13,852 INFO L125 PetriNetUnfolderBase]: For 50396/50396 co-relation queries the response was YES. [2024-11-28 04:17:13,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32898 conditions, 4884 events. 3389/4884 cut-off events. For 50396/50396 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 23153 event pairs, 724 based on Foata normal form. 1/4885 useless extension candidates. Maximal degree in co-relation 32362. Up to 4404 conditions per place. [2024-11-28 04:17:13,895 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 299 selfloop transitions, 65 changer transitions 1/366 dead transitions. [2024-11-28 04:17:13,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 366 transitions, 6097 flow [2024-11-28 04:17:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:17:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:17:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-11-28 04:17:13,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-11-28 04:17:13,896 INFO L175 Difference]: Start difference. First operand has 121 places, 286 transitions, 4422 flow. Second operand 8 states and 119 transitions. [2024-11-28 04:17:13,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 366 transitions, 6097 flow [2024-11-28 04:17:14,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 366 transitions, 5813 flow, removed 114 selfloop flow, removed 2 redundant places. [2024-11-28 04:17:14,057 INFO L231 Difference]: Finished difference. Result has 129 places, 325 transitions, 5058 flow [2024-11-28 04:17:14,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4138, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5058, PETRI_PLACES=129, PETRI_TRANSITIONS=325} [2024-11-28 04:17:14,058 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-11-28 04:17:14,058 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 325 transitions, 5058 flow [2024-11-28 04:17:14,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:14,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:14,058 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:14,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:17:14,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:17:14,259 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:14,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash 359436148, now seen corresponding path program 6 times [2024-11-28 04:17:14,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:14,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601729220] [2024-11-28 04:17:14,260 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:17:14,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:14,271 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 04:17:14,271 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:14,458 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 04:17:14,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:14,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601729220] [2024-11-28 04:17:14,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601729220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:14,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165890000] [2024-11-28 04:17:14,459 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:17:14,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:14,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:14,461 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:14,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:17:14,529 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 04:17:14,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:14,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:17:14,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:14,644 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 04:17:14,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:15,993 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 04:17:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165890000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:15,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-28 04:17:15,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432545542] [2024-11-28 04:17:15,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:15,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:17:15,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:15,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:17:15,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:17:15,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:15,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 325 transitions, 5058 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:15,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:15,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:15,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:17,087 INFO L124 PetriNetUnfolderBase]: 3669/5292 cut-off events. [2024-11-28 04:17:17,087 INFO L125 PetriNetUnfolderBase]: For 56392/56392 co-relation queries the response was YES. [2024-11-28 04:17:17,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35881 conditions, 5292 events. 3669/5292 cut-off events. For 56392/56392 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 25394 event pairs, 825 based on Foata normal form. 2/5294 useless extension candidates. Maximal degree in co-relation 35324. Up to 4799 conditions per place. [2024-11-28 04:17:17,144 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 321 selfloop transitions, 66 changer transitions 2/390 dead transitions. [2024-11-28 04:17:17,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 390 transitions, 6553 flow [2024-11-28 04:17:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:17:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:17:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-11-28 04:17:17,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.551440329218107 [2024-11-28 04:17:17,146 INFO L175 Difference]: Start difference. First operand has 129 places, 325 transitions, 5058 flow. Second operand 9 states and 134 transitions. [2024-11-28 04:17:17,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 390 transitions, 6553 flow [2024-11-28 04:17:17,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 390 transitions, 6195 flow, removed 166 selfloop flow, removed 1 redundant places. [2024-11-28 04:17:17,375 INFO L231 Difference]: Finished difference. Result has 139 places, 344 transitions, 5310 flow [2024-11-28 04:17:17,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4700, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5310, PETRI_PLACES=139, PETRI_TRANSITIONS=344} [2024-11-28 04:17:17,376 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-11-28 04:17:17,376 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 344 transitions, 5310 flow [2024-11-28 04:17:17,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:17,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:17,377 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:17,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:17:17,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:17:17,578 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:17,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:17,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1986312547, now seen corresponding path program 7 times [2024-11-28 04:17:17,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:17,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160465351] [2024-11-28 04:17:17,578 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:17:17,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:17,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160465351] [2024-11-28 04:17:17,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160465351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:17,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344694056] [2024-11-28 04:17:17,718 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:17:17,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:17,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:17,720 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:17,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:17:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:17,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:17:17,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:17,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:17,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344694056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:17,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:17,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 04:17:17,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616657097] [2024-11-28 04:17:17,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:17,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:17:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:17,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:17:17,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:17:17,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:17,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 344 transitions, 5310 flow. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 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 04:17:17,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:17,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:17,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:19,431 INFO L124 PetriNetUnfolderBase]: 5631/7980 cut-off events. [2024-11-28 04:17:19,431 INFO L125 PetriNetUnfolderBase]: For 91663/91663 co-relation queries the response was YES. [2024-11-28 04:17:19,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54079 conditions, 7980 events. 5631/7980 cut-off events. For 91663/91663 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 39227 event pairs, 512 based on Foata normal form. 68/8048 useless extension candidates. Maximal degree in co-relation 52892. Up to 2267 conditions per place. [2024-11-28 04:17:19,480 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 570 selfloop transitions, 185 changer transitions 0/756 dead transitions. [2024-11-28 04:17:19,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 756 transitions, 12194 flow [2024-11-28 04:17:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:17:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 04:17:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-11-28 04:17:19,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-11-28 04:17:19,482 INFO L175 Difference]: Start difference. First operand has 139 places, 344 transitions, 5310 flow. Second operand 13 states and 204 transitions. [2024-11-28 04:17:19,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 756 transitions, 12194 flow [2024-11-28 04:17:19,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 756 transitions, 11305 flow, removed 416 selfloop flow, removed 2 redundant places. [2024-11-28 04:17:19,697 INFO L231 Difference]: Finished difference. Result has 157 places, 444 transitions, 6813 flow [2024-11-28 04:17:19,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4955, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6813, PETRI_PLACES=157, PETRI_TRANSITIONS=444} [2024-11-28 04:17:19,698 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-11-28 04:17:19,698 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 444 transitions, 6813 flow [2024-11-28 04:17:19,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 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 04:17:19,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:19,698 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:19,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:17:19,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:19,899 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:19,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash -367759720, now seen corresponding path program 8 times [2024-11-28 04:17:19,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:19,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055655797] [2024-11-28 04:17:19,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:17:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:19,910 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:19,910 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:20,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055655797] [2024-11-28 04:17:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055655797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310151524] [2024-11-28 04:17:20,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:17:20,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:20,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:20,010 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:17:20,070 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:20,071 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:20,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:17:20,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:20,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:20,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310151524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:20,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:20,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 04:17:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42481904] [2024-11-28 04:17:20,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:20,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:17:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:20,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:17:20,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:17:20,225 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:20,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 444 transitions, 6813 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 04:17:20,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:20,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:20,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:22,214 INFO L124 PetriNetUnfolderBase]: 6622/9245 cut-off events. [2024-11-28 04:17:22,214 INFO L125 PetriNetUnfolderBase]: For 132423/132423 co-relation queries the response was YES. [2024-11-28 04:17:22,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69724 conditions, 9245 events. 6622/9245 cut-off events. For 132423/132423 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 44894 event pairs, 1506 based on Foata normal form. 108/9353 useless extension candidates. Maximal degree in co-relation 68235. Up to 6464 conditions per place. [2024-11-28 04:17:22,292 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 528 selfloop transitions, 306 changer transitions 0/835 dead transitions. [2024-11-28 04:17:22,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 835 transitions, 13807 flow [2024-11-28 04:17:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:17:22,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 04:17:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 267 transitions. [2024-11-28 04:17:22,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5493827160493827 [2024-11-28 04:17:22,295 INFO L175 Difference]: Start difference. First operand has 157 places, 444 transitions, 6813 flow. Second operand 18 states and 267 transitions. [2024-11-28 04:17:22,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 835 transitions, 13807 flow [2024-11-28 04:17:22,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 835 transitions, 13136 flow, removed 299 selfloop flow, removed 1 redundant places. [2024-11-28 04:17:22,927 INFO L231 Difference]: Finished difference. Result has 180 places, 607 transitions, 9589 flow [2024-11-28 04:17:22,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6370, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9589, PETRI_PLACES=180, PETRI_TRANSITIONS=607} [2024-11-28 04:17:22,928 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-11-28 04:17:22,928 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 607 transitions, 9589 flow [2024-11-28 04:17:22,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 04:17:22,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:22,929 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:22,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:17:23,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:23,133 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:23,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:23,133 INFO L85 PathProgramCache]: Analyzing trace with hash 85067523, now seen corresponding path program 9 times [2024-11-28 04:17:23,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:23,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159410093] [2024-11-28 04:17:23,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:17:23,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:23,149 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:17:23,149 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:23,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:23,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159410093] [2024-11-28 04:17:23,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159410093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:23,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745391337] [2024-11-28 04:17:23,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:17:23,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:23,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:23,270 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:23,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:17:23,337 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:17:23,337 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:23,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:17:23,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:23,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745391337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:23,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:23,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 04:17:23,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169785864] [2024-11-28 04:17:23,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:23,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:17:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:23,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:17:23,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:17:23,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:23,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 607 transitions, 9589 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 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 04:17:23,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:23,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:23,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:26,137 INFO L124 PetriNetUnfolderBase]: 8105/11188 cut-off events. [2024-11-28 04:17:26,138 INFO L125 PetriNetUnfolderBase]: For 179185/179185 co-relation queries the response was YES. [2024-11-28 04:17:26,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88147 conditions, 11188 events. 8105/11188 cut-off events. For 179185/179185 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 54740 event pairs, 1531 based on Foata normal form. 194/11382 useless extension candidates. Maximal degree in co-relation 86270. Up to 7209 conditions per place. [2024-11-28 04:17:26,234 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 691 selfloop transitions, 356 changer transitions 0/1048 dead transitions. [2024-11-28 04:17:26,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1048 transitions, 18866 flow [2024-11-28 04:17:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:17:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:17:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 193 transitions. [2024-11-28 04:17:26,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5105820105820106 [2024-11-28 04:17:26,236 INFO L175 Difference]: Start difference. First operand has 180 places, 607 transitions, 9589 flow. Second operand 14 states and 193 transitions. [2024-11-28 04:17:26,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 1048 transitions, 18866 flow [2024-11-28 04:17:27,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 1048 transitions, 17487 flow, removed 479 selfloop flow, removed 3 redundant places. [2024-11-28 04:17:27,580 INFO L231 Difference]: Finished difference. Result has 198 places, 795 transitions, 12969 flow [2024-11-28 04:17:27,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8929, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12969, PETRI_PLACES=198, PETRI_TRANSITIONS=795} [2024-11-28 04:17:27,581 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-11-28 04:17:27,581 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 795 transitions, 12969 flow [2024-11-28 04:17:27,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 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 04:17:27,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:27,581 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:27,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:17:27,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:27,782 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:27,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1677819685, now seen corresponding path program 10 times [2024-11-28 04:17:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:27,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119568851] [2024-11-28 04:17:27,783 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:17:27,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:27,793 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:17:27,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:27,946 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 04:17:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119568851] [2024-11-28 04:17:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119568851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712751549] [2024-11-28 04:17:27,947 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:17:27,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:27,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:27,949 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:27,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:17:28,009 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:17:28,009 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:28,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:17:28,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:28,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:28,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712751549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:28,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:28,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-28 04:17:28,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750825556] [2024-11-28 04:17:28,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:28,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:17:28,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:28,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:17:28,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:17:28,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:28,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 795 transitions, 12969 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 0 states have call successors, (0), 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 04:17:28,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:28,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:28,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:35,700 INFO L124 PetriNetUnfolderBase]: 10891/14901 cut-off events. [2024-11-28 04:17:35,700 INFO L125 PetriNetUnfolderBase]: For 314549/314549 co-relation queries the response was YES. [2024-11-28 04:17:35,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133688 conditions, 14901 events. 10891/14901 cut-off events. For 314549/314549 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 75032 event pairs, 984 based on Foata normal form. 638/15539 useless extension candidates. Maximal degree in co-relation 131496. Up to 5771 conditions per place. [2024-11-28 04:17:35,898 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 798 selfloop transitions, 1381 changer transitions 1/2181 dead transitions. [2024-11-28 04:17:35,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 2181 transitions, 41153 flow [2024-11-28 04:17:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-28 04:17:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2024-11-28 04:17:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 1327 transitions. [2024-11-28 04:17:35,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4427761094427761 [2024-11-28 04:17:35,903 INFO L175 Difference]: Start difference. First operand has 198 places, 795 transitions, 12969 flow. Second operand 111 states and 1327 transitions. [2024-11-28 04:17:35,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 2181 transitions, 41153 flow [2024-11-28 04:17:38,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 2181 transitions, 40313 flow, removed 420 selfloop flow, removed 0 redundant places. [2024-11-28 04:17:38,032 INFO L231 Difference]: Finished difference. Result has 380 places, 1701 transitions, 35408 flow [2024-11-28 04:17:38,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12522, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=35408, PETRI_PLACES=380, PETRI_TRANSITIONS=1701} [2024-11-28 04:17:38,033 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-11-28 04:17:38,033 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 1701 transitions, 35408 flow [2024-11-28 04:17:38,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 0 states have call successors, (0), 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 04:17:38,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:38,034 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:38,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:17:38,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:38,234 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:38,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1607903151, now seen corresponding path program 11 times [2024-11-28 04:17:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403258558] [2024-11-28 04:17:38,235 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:17:38,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:38,243 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:38,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:38,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403258558] [2024-11-28 04:17:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403258558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:38,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886941968] [2024-11-28 04:17:38,346 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:17:38,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:38,348 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:38,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:17:38,413 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:17:38,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:38,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:17:38,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:38,580 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 04:17:38,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886941968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:38,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-28 04:17:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609992035] [2024-11-28 04:17:38,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:38,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:17:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:38,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:17:38,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:17:38,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:38,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1701 transitions, 35408 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 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 04:17:38,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:38,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:38,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:17:47,321 INFO L124 PetriNetUnfolderBase]: 10947/15230 cut-off events. [2024-11-28 04:17:47,321 INFO L125 PetriNetUnfolderBase]: For 647610/647610 co-relation queries the response was YES. [2024-11-28 04:17:47,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165106 conditions, 15230 events. 10947/15230 cut-off events. For 647610/647610 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 80448 event pairs, 1038 based on Foata normal form. 523/15753 useless extension candidates. Maximal degree in co-relation 164464. Up to 5293 conditions per place. [2024-11-28 04:17:47,629 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 973 selfloop transitions, 850 changer transitions 243/2067 dead transitions. [2024-11-28 04:17:47,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 2067 transitions, 46114 flow [2024-11-28 04:17:47,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 04:17:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-28 04:17:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 434 transitions. [2024-11-28 04:17:47,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47276688453159044 [2024-11-28 04:17:47,631 INFO L175 Difference]: Start difference. First operand has 380 places, 1701 transitions, 35408 flow. Second operand 34 states and 434 transitions. [2024-11-28 04:17:47,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 2067 transitions, 46114 flow [2024-11-28 04:17:56,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 2067 transitions, 37487 flow, removed 3919 selfloop flow, removed 11 redundant places. [2024-11-28 04:17:56,114 INFO L231 Difference]: Finished difference. Result has 420 places, 1628 transitions, 29098 flow [2024-11-28 04:17:56,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=26207, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=742, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=848, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=29098, PETRI_PLACES=420, PETRI_TRANSITIONS=1628} [2024-11-28 04:17:56,115 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-11-28 04:17:56,116 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 1628 transitions, 29098 flow [2024-11-28 04:17:56,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 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 04:17:56,116 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:17:56,116 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:56,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:17:56,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:56,316 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:17:56,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash 995048133, now seen corresponding path program 12 times [2024-11-28 04:17:56,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:56,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299052512] [2024-11-28 04:17:56,317 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:17:56,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:56,332 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 04:17:56,332 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:56,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299052512] [2024-11-28 04:17:56,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299052512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726293819] [2024-11-28 04:17:56,574 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:17:56,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:56,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:56,576 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:56,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:17:56,642 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 04:17:56,643 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:56,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:17:56,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:56,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:17:56,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726293819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:56,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:56,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-28 04:17:56,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389205632] [2024-11-28 04:17:56,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:56,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:17:56,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:56,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:17:56,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:17:56,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:17:56,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 1628 transitions, 29098 flow. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 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 04:17:56,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:17:56,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:17:56,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:04,310 INFO L124 PetriNetUnfolderBase]: 11343/15693 cut-off events. [2024-11-28 04:18:04,310 INFO L125 PetriNetUnfolderBase]: For 893049/893049 co-relation queries the response was YES. [2024-11-28 04:18:04,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172700 conditions, 15693 events. 11343/15693 cut-off events. For 893049/893049 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 82430 event pairs, 883 based on Foata normal form. 211/15904 useless extension candidates. Maximal degree in co-relation 172215. Up to 5052 conditions per place. [2024-11-28 04:18:04,688 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 1349 selfloop transitions, 901 changer transitions 0/2251 dead transitions. [2024-11-28 04:18:04,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 2251 transitions, 45957 flow [2024-11-28 04:18:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:18:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 04:18:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 332 transitions. [2024-11-28 04:18:04,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.534621578099839 [2024-11-28 04:18:04,690 INFO L175 Difference]: Start difference. First operand has 420 places, 1628 transitions, 29098 flow. Second operand 23 states and 332 transitions. [2024-11-28 04:18:04,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 2251 transitions, 45957 flow [2024-11-28 04:18:15,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 2251 transitions, 44149 flow, removed 611 selfloop flow, removed 9 redundant places. [2024-11-28 04:18:15,126 INFO L231 Difference]: Finished difference. Result has 435 places, 1818 transitions, 33954 flow [2024-11-28 04:18:15,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=27630, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=746, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=33954, PETRI_PLACES=435, PETRI_TRANSITIONS=1818} [2024-11-28 04:18:15,128 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-11-28 04:18:15,128 INFO L471 AbstractCegarLoop]: Abstraction has has 435 places, 1818 transitions, 33954 flow [2024-11-28 04:18:15,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 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 04:18:15,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:15,128 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:18:15,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:18:15,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:18:15,333 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:18:15,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1519606232, now seen corresponding path program 13 times [2024-11-28 04:18:15,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:15,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750104557] [2024-11-28 04:18:15,333 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:18:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:18:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750104557] [2024-11-28 04:18:15,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750104557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:18:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378999198] [2024-11-28 04:18:15,435 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:18:15,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:15,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:18:15,437 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:18:15,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:18:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:15,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:18:15,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:18:15,600 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 04:18:15,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:18:15,691 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 04:18:15,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378999198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:18:15,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:18:15,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-28 04:18:15,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169235782] [2024-11-28 04:18:15,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:18:15,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:18:15,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:15,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:18:15,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:18:15,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:18:15,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 1818 transitions, 33954 flow. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 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 04:18:15,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:15,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:18:15,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:26,424 INFO L124 PetriNetUnfolderBase]: 13034/17933 cut-off events. [2024-11-28 04:18:26,424 INFO L125 PetriNetUnfolderBase]: For 1102595/1102595 co-relation queries the response was YES. [2024-11-28 04:18:26,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208660 conditions, 17933 events. 13034/17933 cut-off events. For 1102595/1102595 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 95004 event pairs, 871 based on Foata normal form. 320/18253 useless extension candidates. Maximal degree in co-relation 208157. Up to 6086 conditions per place. [2024-11-28 04:18:26,908 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1821 selfloop transitions, 1146 changer transitions 7/2975 dead transitions. [2024-11-28 04:18:26,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 2975 transitions, 64535 flow [2024-11-28 04:18:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 04:18:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-28 04:18:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 755 transitions. [2024-11-28 04:18:26,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4438565549676661 [2024-11-28 04:18:26,912 INFO L175 Difference]: Start difference. First operand has 435 places, 1818 transitions, 33954 flow. Second operand 63 states and 755 transitions. [2024-11-28 04:18:26,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 2975 transitions, 64535 flow [2024-11-28 04:18:38,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 2975 transitions, 62807 flow, removed 536 selfloop flow, removed 4 redundant places. [2024-11-28 04:18:38,327 INFO L231 Difference]: Finished difference. Result has 536 places, 2295 transitions, 47723 flow [2024-11-28 04:18:38,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=32393, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=707, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=47723, PETRI_PLACES=536, PETRI_TRANSITIONS=2295} [2024-11-28 04:18:38,328 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 506 predicate places. [2024-11-28 04:18:38,328 INFO L471 AbstractCegarLoop]: Abstraction has has 536 places, 2295 transitions, 47723 flow [2024-11-28 04:18:38,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 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 04:18:38,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:38,329 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:18:38,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:18:38,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:18:38,529 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:18:38,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:38,530 INFO L85 PathProgramCache]: Analyzing trace with hash -225801919, now seen corresponding path program 14 times [2024-11-28 04:18:38,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:38,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000489690] [2024-11-28 04:18:38,530 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:18:38,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:38,544 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:18:38,544 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:18:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:18:38,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:38,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000489690] [2024-11-28 04:18:38,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000489690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:18:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064524304] [2024-11-28 04:18:38,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:18:38,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:38,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:18:38,737 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:18:38,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12de65a-72bf-4dff-911a-07009383b1b2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:18:38,857 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:18:38,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:18:38,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:18:38,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:18:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:18:38,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:18:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:18:39,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064524304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:18:39,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:18:39,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-28 04:18:39,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632128672] [2024-11-28 04:18:39,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:18:39,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:18:39,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:39,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:18:39,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:18:39,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-28 04:18:39,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 2295 transitions, 47723 flow. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 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 04:18:39,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:39,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-28 04:18:39,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand