./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC --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 fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:56:22,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:56:22,956 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-23 23:56:22,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:56:22,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:56:22,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:56:22,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:56:22,991 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:56:22,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:56:22,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:56:22,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:56:22,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:56:22,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:56:22,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:56:22,992 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:56:22,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:56:22,993 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:56:22,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:56:22,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:56:22,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:56:22,993 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 23:56:22,993 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 23:56:22,993 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 23:56:22,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:56:22,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:56:22,994 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:56:22,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:56:22,995 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:56:22,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:56:22,995 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:56:22,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:56:22,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:56:22,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:56:22,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:56:22,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:56:22,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:56:22,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:56:22,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:56:22,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:56:22,997 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_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC 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 -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2024-11-23 23:56:23,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:56:23,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:56:23,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:56:23,337 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:56:23,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:56:23,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-23 23:56:26,469 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/data/7986a2f64/4089355bb9f8439a84b7f3249276c7ef/FLAG2a0adf63f [2024-11-23 23:56:26,754 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:56:26,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-23 23:56:26,764 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/data/7986a2f64/4089355bb9f8439a84b7f3249276c7ef/FLAG2a0adf63f [2024-11-23 23:56:27,053 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/data/7986a2f64/4089355bb9f8439a84b7f3249276c7ef [2024-11-23 23:56:27,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:56:27,059 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:56:27,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:56:27,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:56:27,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:56:27,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e17ff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27, skipping insertion in model container [2024-11-23 23:56:27,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,093 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:56:27,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:56:27,347 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:56:27,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:56:27,398 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:56:27,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27 WrapperNode [2024-11-23 23:56:27,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:56:27,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:56:27,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:56:27,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:56:27,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,445 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-11-23 23:56:27,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:56:27,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:56:27,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:56:27,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:56:27,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,461 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,480 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]. [2024-11-23 23:56:27,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,485 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:56:27,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:56:27,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:56:27,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:56:27,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (1/1) ... [2024-11-23 23:56:27,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:56:27,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:27,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:56:27,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:56:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:56:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 23:56:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 23:56:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 23:56:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 23:56:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:56:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 23:56:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 23:56:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:56:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:56:27,603 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 23:56:27,694 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:56:27,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:56:27,968 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:56:27,968 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:56:28,160 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:56:28,164 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:56:28,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:56:28 BoogieIcfgContainer [2024-11-23 23:56:28,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:56:28,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:56:28,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:56:28,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:56:28,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:56:27" (1/3) ... [2024-11-23 23:56:28,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4623daab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:56:28, skipping insertion in model container [2024-11-23 23:56:28,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:27" (2/3) ... [2024-11-23 23:56:28,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4623daab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:56:28, skipping insertion in model container [2024-11-23 23:56:28,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:56:28" (3/3) ... [2024-11-23 23:56:28,187 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-11-23 23:56:28,208 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:56:28,210 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 23:56:28,210 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:56:28,258 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 23:56:28,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-11-23 23:56:28,334 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-23 23:56:28,336 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 23:56:28,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-23 23:56:28,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-11-23 23:56:28,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-11-23 23:56:28,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:56:28,384 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;@caa7f79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:56:28,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-23 23:56:28,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:56:28,405 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-23 23:56:28,405 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 23:56:28,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:28,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:28,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:28,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1600270162, now seen corresponding path program 1 times [2024-11-23 23:56:28,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:28,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746074973] [2024-11-23 23:56:28,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:28,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:28,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746074973] [2024-11-23 23:56:28,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746074973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:28,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:28,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:56:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649633763] [2024-11-23 23:56:28,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:28,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:28,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:28,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:28,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:28,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-23 23:56:28,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:28,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:28,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-23 23:56:28,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:29,032 INFO L124 PetriNetUnfolderBase]: 70/137 cut-off events. [2024-11-23 23:56:29,032 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-23 23:56:29,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 137 events. 70/137 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 426 event pairs, 31 based on Foata normal form. 9/142 useless extension candidates. Maximal degree in co-relation 252. Up to 86 conditions per place. [2024-11-23 23:56:29,039 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 20 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-23 23:56:29,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 113 flow [2024-11-23 23:56:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:56:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:56:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-11-23 23:56:29,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-11-23 23:56:29,062 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 49 transitions. [2024-11-23 23:56:29,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 113 flow [2024-11-23 23:56:29,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 23:56:29,077 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-11-23 23:56:29,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-23 23:56:29,085 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-11-23 23:56:29,086 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-11-23 23:56:29,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:29,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:29,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:29,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:56:29,087 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:29,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 184256333, now seen corresponding path program 1 times [2024-11-23 23:56:29,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:29,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972944168] [2024-11-23 23:56:29,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:29,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:56:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972944168] [2024-11-23 23:56:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972944168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:29,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:29,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:56:29,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720361582] [2024-11-23 23:56:29,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:29,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:56:29,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:29,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:56:29,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:56:29,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-23 23:56:29,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 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) [2024-11-23 23:56:29,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:29,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-23 23:56:29,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:29,463 INFO L124 PetriNetUnfolderBase]: 89/180 cut-off events. [2024-11-23 23:56:29,466 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-23 23:56:29,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 180 events. 89/180 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 618 event pairs, 49 based on Foata normal form. 13/188 useless extension candidates. Maximal degree in co-relation 87. Up to 124 conditions per place. [2024-11-23 23:56:29,469 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-11-23 23:56:29,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 129 flow [2024-11-23 23:56:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:56:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:56:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-11-23 23:56:29,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-11-23 23:56:29,474 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 47 transitions. [2024-11-23 23:56:29,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 129 flow [2024-11-23 23:56:29,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:56:29,476 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-23 23:56:29,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-11-23 23:56:29,478 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-11-23 23:56:29,478 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-23 23:56:29,478 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) [2024-11-23 23:56:29,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:29,478 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:29,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:56:29,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:29,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash 658132287, now seen corresponding path program 1 times [2024-11-23 23:56:29,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:29,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006362553] [2024-11-23 23:56:29,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:29,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:29,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006362553] [2024-11-23 23:56:29,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006362553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408527872] [2024-11-23 23:56:29,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:29,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:29,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:29,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:29,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:56:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:29,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:56:29,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:29,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:30,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408527872] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:30,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:56:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 5 [2024-11-23 23:56:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14107763] [2024-11-23 23:56:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:30,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:56:30,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:30,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:56:30,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:30,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-23 23:56:30,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:30,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:30,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-23 23:56:30,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:30,523 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-11-23 23:56:30,524 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-23 23:56:30,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 301 events. 153/301 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1129 event pairs, 23 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 236. Up to 97 conditions per place. [2024-11-23 23:56:30,530 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 35 selfloop transitions, 5 changer transitions 3/46 dead transitions. [2024-11-23 23:56:30,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 46 transitions, 238 flow [2024-11-23 23:56:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:56:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:56:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-23 23:56:30,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-11-23 23:56:30,534 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 4 states and 63 transitions. [2024-11-23 23:56:30,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 46 transitions, 238 flow [2024-11-23 23:56:30,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:56:30,538 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 98 flow [2024-11-23 23:56:30,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2024-11-23 23:56:30,539 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2024-11-23 23:56:30,540 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 98 flow [2024-11-23 23:56:30,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:30,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:30,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:30,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:56:30,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:30,747 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:30,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1769464435, now seen corresponding path program 2 times [2024-11-23 23:56:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:30,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822431170] [2024-11-23 23:56:30,748 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:56:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:30,767 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:56:30,767 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:30,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:30,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822431170] [2024-11-23 23:56:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822431170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:30,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117160059] [2024-11-23 23:56:30,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:56:30,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:30,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:30,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:30,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:56:31,003 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:56:31,003 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:31,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:56:31,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:31,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117160059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:31,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:31,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-23 23:56:31,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359417642] [2024-11-23 23:56:31,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:31,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:56:31,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:31,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:56:31,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:56:31,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 23:56:31,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 98 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:31,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:31,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 23:56:31,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:31,598 INFO L124 PetriNetUnfolderBase]: 286/530 cut-off events. [2024-11-23 23:56:31,601 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-23 23:56:31,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 530 events. 286/530 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2173 event pairs, 42 based on Foata normal form. 18/547 useless extension candidates. Maximal degree in co-relation 507. Up to 242 conditions per place. [2024-11-23 23:56:31,608 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 40 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-11-23 23:56:31,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 335 flow [2024-11-23 23:56:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:56:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:56:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-23 23:56:31,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-23 23:56:31,613 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 98 flow. Second operand 6 states and 70 transitions. [2024-11-23 23:56:31,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 335 flow [2024-11-23 23:56:31,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 55 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:56:31,618 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 219 flow [2024-11-23 23:56:31,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-11-23 23:56:31,619 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-11-23 23:56:31,619 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 219 flow [2024-11-23 23:56:31,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:31,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:31,619 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:31,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:31,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:31,822 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:31,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:31,823 INFO L85 PathProgramCache]: Analyzing trace with hash -251739490, now seen corresponding path program 3 times [2024-11-23 23:56:31,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:31,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075972081] [2024-11-23 23:56:31,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:56:31,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:31,848 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:56:31,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:32,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075972081] [2024-11-23 23:56:32,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075972081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:32,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600303724] [2024-11-23 23:56:32,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:56:32,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:32,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:32,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:32,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:56:32,183 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:56:32,183 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:32,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:56:32,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:32,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:32,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600303724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:32,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:32,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2024-11-23 23:56:32,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137883098] [2024-11-23 23:56:32,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:32,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:56:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:32,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:56:32,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:56:32,745 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:56:32,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 219 flow. Second operand has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:32,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:32,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:56:32,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:34,310 INFO L124 PetriNetUnfolderBase]: 627/1078 cut-off events. [2024-11-23 23:56:34,310 INFO L125 PetriNetUnfolderBase]: For 1710/1710 co-relation queries the response was YES. [2024-11-23 23:56:34,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 1078 events. 627/1078 cut-off events. For 1710/1710 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4754 event pairs, 3 based on Foata normal form. 29/1107 useless extension candidates. Maximal degree in co-relation 2364. Up to 211 conditions per place. [2024-11-23 23:56:34,319 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 118 selfloop transitions, 97 changer transitions 23/239 dead transitions. [2024-11-23 23:56:34,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 239 transitions, 1673 flow [2024-11-23 23:56:34,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-23 23:56:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-23 23:56:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 359 transitions. [2024-11-23 23:56:34,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4107551487414188 [2024-11-23 23:56:34,323 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 219 flow. Second operand 38 states and 359 transitions. [2024-11-23 23:56:34,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 239 transitions, 1673 flow [2024-11-23 23:56:34,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 239 transitions, 1665 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-23 23:56:34,338 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 1096 flow [2024-11-23 23:56:34,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1096, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2024-11-23 23:56:34,339 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 69 predicate places. [2024-11-23 23:56:34,339 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 1096 flow [2024-11-23 23:56:34,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:34,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:34,339 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:34,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:34,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:34,540 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:34,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash 706728402, now seen corresponding path program 4 times [2024-11-23 23:56:34,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:34,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338477173] [2024-11-23 23:56:34,541 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:56:34,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:34,552 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:56:34,553 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:34,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338477173] [2024-11-23 23:56:34,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338477173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544950331] [2024-11-23 23:56:34,663 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:56:34,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:34,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:34,666 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:34,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:56:34,724 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:56:34,724 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:34,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:56:34,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:34,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:34,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544950331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:34,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:34,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-23 23:56:34,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339927763] [2024-11-23 23:56:34,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:34,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:56:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:34,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:56:34,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:56:34,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:56:34,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 1096 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:34,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:34,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:56:34,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:35,633 INFO L124 PetriNetUnfolderBase]: 889/1517 cut-off events. [2024-11-23 23:56:35,634 INFO L125 PetriNetUnfolderBase]: For 15497/15497 co-relation queries the response was YES. [2024-11-23 23:56:35,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 1517 events. 889/1517 cut-off events. For 15497/15497 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7194 event pairs, 65 based on Foata normal form. 71/1588 useless extension candidates. Maximal degree in co-relation 7185. Up to 391 conditions per place. [2024-11-23 23:56:35,663 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 129 selfloop transitions, 135 changer transitions 0/265 dead transitions. [2024-11-23 23:56:35,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 265 transitions, 3003 flow [2024-11-23 23:56:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:56:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-23 23:56:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 169 transitions. [2024-11-23 23:56:35,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-11-23 23:56:35,669 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 1096 flow. Second operand 16 states and 169 transitions. [2024-11-23 23:56:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 265 transitions, 3003 flow [2024-11-23 23:56:35,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 2778 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-11-23 23:56:35,720 INFO L231 Difference]: Finished difference. Result has 115 places, 182 transitions, 2204 flow [2024-11-23 23:56:35,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2204, PETRI_PLACES=115, PETRI_TRANSITIONS=182} [2024-11-23 23:56:35,721 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 90 predicate places. [2024-11-23 23:56:35,721 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 182 transitions, 2204 flow [2024-11-23 23:56:35,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:35,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:35,721 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:35,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:56:35,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:56:35,922 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:35,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash -710741524, now seen corresponding path program 5 times [2024-11-23 23:56:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:35,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599193817] [2024-11-23 23:56:35,923 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:56:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:35,937 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:56:35,937 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:36,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599193817] [2024-11-23 23:56:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599193817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920712567] [2024-11-23 23:56:36,115 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:56:36,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:36,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:36,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:36,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:56:36,192 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:56:36,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:36,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:56:36,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:36,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920712567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:36,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:36,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-23 23:56:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989834189] [2024-11-23 23:56:36,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:36,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:56:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:36,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:56:36,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:56:36,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:56:36,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 182 transitions, 2204 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 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) [2024-11-23 23:56:36,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:36,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:56:36,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:37,880 INFO L124 PetriNetUnfolderBase]: 1375/2291 cut-off events. [2024-11-23 23:56:37,880 INFO L125 PetriNetUnfolderBase]: For 35625/35625 co-relation queries the response was YES. [2024-11-23 23:56:37,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15212 conditions, 2291 events. 1375/2291 cut-off events. For 35625/35625 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11704 event pairs, 93 based on Foata normal form. 22/2313 useless extension candidates. Maximal degree in co-relation 12171. Up to 474 conditions per place. [2024-11-23 23:56:37,916 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 202 selfloop transitions, 196 changer transitions 5/404 dead transitions. [2024-11-23 23:56:37,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 404 transitions, 5589 flow [2024-11-23 23:56:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:56:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-23 23:56:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 239 transitions. [2024-11-23 23:56:37,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4329710144927536 [2024-11-23 23:56:37,921 INFO L175 Difference]: Start difference. First operand has 115 places, 182 transitions, 2204 flow. Second operand 24 states and 239 transitions. [2024-11-23 23:56:37,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 404 transitions, 5589 flow [2024-11-23 23:56:38,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 404 transitions, 5379 flow, removed 105 selfloop flow, removed 0 redundant places. [2024-11-23 23:56:38,090 INFO L231 Difference]: Finished difference. Result has 146 places, 296 transitions, 4086 flow [2024-11-23 23:56:38,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4086, PETRI_PLACES=146, PETRI_TRANSITIONS=296} [2024-11-23 23:56:38,091 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 121 predicate places. [2024-11-23 23:56:38,092 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 296 transitions, 4086 flow [2024-11-23 23:56:38,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 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) [2024-11-23 23:56:38,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:38,092 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:38,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:38,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 23:56:38,293 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:38,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1786452680, now seen corresponding path program 6 times [2024-11-23 23:56:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:38,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656940603] [2024-11-23 23:56:38,293 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 23:56:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:38,306 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-23 23:56:38,306 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656940603] [2024-11-23 23:56:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656940603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957838353] [2024-11-23 23:56:38,446 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 23:56:38,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:38,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:38,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:38,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:56:38,508 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-23 23:56:38,508 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:38,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:56:38,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:38,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957838353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:38,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-11-23 23:56:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106962587] [2024-11-23 23:56:38,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:38,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:56:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:38,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:56:38,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:56:38,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:56:38,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 296 transitions, 4086 flow. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 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) [2024-11-23 23:56:38,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:38,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:56:38,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:41,065 INFO L124 PetriNetUnfolderBase]: 1520/2542 cut-off events. [2024-11-23 23:56:41,065 INFO L125 PetriNetUnfolderBase]: For 50817/50817 co-relation queries the response was YES. [2024-11-23 23:56:41,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17856 conditions, 2542 events. 1520/2542 cut-off events. For 50817/50817 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13114 event pairs, 40 based on Foata normal form. 86/2628 useless extension candidates. Maximal degree in co-relation 16508. Up to 494 conditions per place. [2024-11-23 23:56:41,110 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 183 selfloop transitions, 322 changer transitions 5/511 dead transitions. [2024-11-23 23:56:41,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 511 transitions, 7586 flow [2024-11-23 23:56:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-23 23:56:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-23 23:56:41,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 380 transitions. [2024-11-23 23:56:41,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4236343366778149 [2024-11-23 23:56:41,114 INFO L175 Difference]: Start difference. First operand has 146 places, 296 transitions, 4086 flow. Second operand 39 states and 380 transitions. [2024-11-23 23:56:41,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 511 transitions, 7586 flow [2024-11-23 23:56:41,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 511 transitions, 6912 flow, removed 321 selfloop flow, removed 4 redundant places. [2024-11-23 23:56:41,520 INFO L231 Difference]: Finished difference. Result has 205 places, 383 transitions, 6021 flow [2024-11-23 23:56:41,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3473, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6021, PETRI_PLACES=205, PETRI_TRANSITIONS=383} [2024-11-23 23:56:41,521 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 180 predicate places. [2024-11-23 23:56:41,522 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 383 transitions, 6021 flow [2024-11-23 23:56:41,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 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) [2024-11-23 23:56:41,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:41,522 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:41,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:56:41,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:41,726 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:41,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -141176036, now seen corresponding path program 7 times [2024-11-23 23:56:41,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:41,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377866783] [2024-11-23 23:56:41,728 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 23:56:41,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:42,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:42,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377866783] [2024-11-23 23:56:42,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377866783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:42,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590223250] [2024-11-23 23:56:42,022 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 23:56:42,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:42,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:42,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:42,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:56:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:42,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:56:42,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:42,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590223250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:42,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:42,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2024-11-23 23:56:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277175141] [2024-11-23 23:56:42,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:42,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 23:56:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:42,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 23:56:42,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:56:42,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:56:42,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 383 transitions, 6021 flow. Second operand has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:42,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:42,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:56:42,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:45,271 INFO L124 PetriNetUnfolderBase]: 2749/4596 cut-off events. [2024-11-23 23:56:45,271 INFO L125 PetriNetUnfolderBase]: For 112715/112715 co-relation queries the response was YES. [2024-11-23 23:56:45,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36861 conditions, 4596 events. 2749/4596 cut-off events. For 112715/112715 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 26435 event pairs, 4 based on Foata normal form. 118/4714 useless extension candidates. Maximal degree in co-relation 36069. Up to 944 conditions per place. [2024-11-23 23:56:45,337 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 372 selfloop transitions, 590 changer transitions 2/965 dead transitions. [2024-11-23 23:56:45,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 965 transitions, 16620 flow [2024-11-23 23:56:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-23 23:56:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-23 23:56:45,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 431 transitions. [2024-11-23 23:56:45,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40737240075614367 [2024-11-23 23:56:45,340 INFO L175 Difference]: Start difference. First operand has 205 places, 383 transitions, 6021 flow. Second operand 46 states and 431 transitions. [2024-11-23 23:56:45,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 965 transitions, 16620 flow [2024-11-23 23:56:45,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 965 transitions, 15881 flow, removed 236 selfloop flow, removed 10 redundant places. [2024-11-23 23:56:45,990 INFO L231 Difference]: Finished difference. Result has 264 places, 735 transitions, 13564 flow [2024-11-23 23:56:45,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=5609, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=13564, PETRI_PLACES=264, PETRI_TRANSITIONS=735} [2024-11-23 23:56:45,992 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 239 predicate places. [2024-11-23 23:56:45,992 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 735 transitions, 13564 flow [2024-11-23 23:56:45,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:45,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:45,992 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:45,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:56:46,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:46,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:46,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:46,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1390002224, now seen corresponding path program 8 times [2024-11-23 23:56:46,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:46,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899413458] [2024-11-23 23:56:46,196 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:56:46,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:46,207 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:56:46,207 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:46,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:46,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899413458] [2024-11-23 23:56:46,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899413458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:46,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634939313] [2024-11-23 23:56:46,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:56:46,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:46,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:46,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:46,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:56:46,398 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:56:46,398 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:46,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:56:46,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:46,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:46,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634939313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:46,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:46,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-11-23 23:56:46,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248573983] [2024-11-23 23:56:46,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:46,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:56:46,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:46,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:56:46,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:56:46,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:56:46,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 735 transitions, 13564 flow. Second operand has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:46,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:46,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:56:46,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:50,563 INFO L124 PetriNetUnfolderBase]: 3976/6570 cut-off events. [2024-11-23 23:56:50,563 INFO L125 PetriNetUnfolderBase]: For 258118/258118 co-relation queries the response was YES. [2024-11-23 23:56:50,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62148 conditions, 6570 events. 3976/6570 cut-off events. For 258118/258118 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 39773 event pairs, 123 based on Foata normal form. 36/6606 useless extension candidates. Maximal degree in co-relation 61379. Up to 1189 conditions per place. [2024-11-23 23:56:50,645 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 311 selfloop transitions, 1051 changer transitions 7/1370 dead transitions. [2024-11-23 23:56:50,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1370 transitions, 28854 flow [2024-11-23 23:56:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-23 23:56:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-23 23:56:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 412 transitions. [2024-11-23 23:56:50,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39806763285024155 [2024-11-23 23:56:50,648 INFO L175 Difference]: Start difference. First operand has 264 places, 735 transitions, 13564 flow. Second operand 45 states and 412 transitions. [2024-11-23 23:56:50,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1370 transitions, 28854 flow [2024-11-23 23:56:52,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1370 transitions, 27545 flow, removed 641 selfloop flow, removed 3 redundant places. [2024-11-23 23:56:52,396 INFO L231 Difference]: Finished difference. Result has 325 places, 1229 transitions, 26266 flow [2024-11-23 23:56:52,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=13137, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=26266, PETRI_PLACES=325, PETRI_TRANSITIONS=1229} [2024-11-23 23:56:52,397 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 300 predicate places. [2024-11-23 23:56:52,398 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 1229 transitions, 26266 flow [2024-11-23 23:56:52,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:56:52,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:56:52,398 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:52,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:56:52,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:56:52,599 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:56:52,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:52,599 INFO L85 PathProgramCache]: Analyzing trace with hash 565589266, now seen corresponding path program 9 times [2024-11-23 23:56:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:52,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470155765] [2024-11-23 23:56:52,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:56:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:52,610 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:56:52,610 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:52,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470155765] [2024-11-23 23:56:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470155765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:52,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593144564] [2024-11-23 23:56:52,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:56:52,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:52,725 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:52,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:56:52,781 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:56:52,781 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:56:52,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:56:52,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:52,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:56:53,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593144564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:56:53,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:56:53,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-11-23 23:56:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951164773] [2024-11-23 23:56:53,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:53,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:56:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:53,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:56:53,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:56:53,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:56:53,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 1229 transitions, 26266 flow. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 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) [2024-11-23 23:56:53,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:56:53,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:56:53,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:56:57,836 INFO L124 PetriNetUnfolderBase]: 4629/7667 cut-off events. [2024-11-23 23:56:57,836 INFO L125 PetriNetUnfolderBase]: For 335320/335320 co-relation queries the response was YES. [2024-11-23 23:56:57,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78608 conditions, 7667 events. 4629/7667 cut-off events. For 335320/335320 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 47580 event pairs, 91 based on Foata normal form. 56/7723 useless extension candidates. Maximal degree in co-relation 78425. Up to 1394 conditions per place. [2024-11-23 23:56:57,946 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 369 selfloop transitions, 1214 changer transitions 2/1586 dead transitions. [2024-11-23 23:56:57,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 1586 transitions, 36554 flow [2024-11-23 23:56:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-23 23:56:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-23 23:56:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 412 transitions. [2024-11-23 23:56:57,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2024-11-23 23:56:57,949 INFO L175 Difference]: Start difference. First operand has 325 places, 1229 transitions, 26266 flow. Second operand 44 states and 412 transitions. [2024-11-23 23:56:57,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 1586 transitions, 36554 flow [2024-11-23 23:57:01,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1586 transitions, 35233 flow, removed 478 selfloop flow, removed 11 redundant places. [2024-11-23 23:57:01,190 INFO L231 Difference]: Finished difference. Result has 370 places, 1443 transitions, 33866 flow [2024-11-23 23:57:01,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=25053, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=33866, PETRI_PLACES=370, PETRI_TRANSITIONS=1443} [2024-11-23 23:57:01,192 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 345 predicate places. [2024-11-23 23:57:01,192 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 1443 transitions, 33866 flow [2024-11-23 23:57:01,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 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) [2024-11-23 23:57:01,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:57:01,192 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:01,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:57:01,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:01,393 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:57:01,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash 852146646, now seen corresponding path program 10 times [2024-11-23 23:57:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658885871] [2024-11-23 23:57:01,394 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:57:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:01,411 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:57:01,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:01,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658885871] [2024-11-23 23:57:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658885871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113177690] [2024-11-23 23:57:01,561 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:57:01,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:01,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:01,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:01,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:57:01,618 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:57:01,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:01,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:57:01,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:01,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:01,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113177690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:01,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:01,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-11-23 23:57:01,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487912957] [2024-11-23 23:57:01,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:01,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:57:01,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:01,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:57:01,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:57:01,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:57:01,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1443 transitions, 33866 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:01,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:57:01,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:57:01,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:57:06,867 INFO L124 PetriNetUnfolderBase]: 4629/7667 cut-off events. [2024-11-23 23:57:06,867 INFO L125 PetriNetUnfolderBase]: For 390412/390412 co-relation queries the response was YES. [2024-11-23 23:57:06,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82843 conditions, 7667 events. 4629/7667 cut-off events. For 390412/390412 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 47910 event pairs, 317 based on Foata normal form. 16/7683 useless extension candidates. Maximal degree in co-relation 82136. Up to 1780 conditions per place. [2024-11-23 23:57:06,957 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 836 selfloop transitions, 666 changer transitions 2/1505 dead transitions. [2024-11-23 23:57:06,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1505 transitions, 38141 flow [2024-11-23 23:57:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:57:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 23:57:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-11-23 23:57:06,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.466403162055336 [2024-11-23 23:57:06,959 INFO L175 Difference]: Start difference. First operand has 370 places, 1443 transitions, 33866 flow. Second operand 11 states and 118 transitions. [2024-11-23 23:57:06,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1505 transitions, 38141 flow [2024-11-23 23:57:10,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1505 transitions, 37232 flow, removed 248 selfloop flow, removed 20 redundant places. [2024-11-23 23:57:10,701 INFO L231 Difference]: Finished difference. Result has 359 places, 1445 transitions, 34763 flow [2024-11-23 23:57:10,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=32899, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=778, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=34763, PETRI_PLACES=359, PETRI_TRANSITIONS=1445} [2024-11-23 23:57:10,703 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 334 predicate places. [2024-11-23 23:57:10,703 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 1445 transitions, 34763 flow [2024-11-23 23:57:10,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:10,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:57:10,704 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:10,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:57:10,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:10,908 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:57:10,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash 406554224, now seen corresponding path program 11 times [2024-11-23 23:57:10,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:10,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719142360] [2024-11-23 23:57:10,909 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:57:10,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:10,917 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 23:57:10,917 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:11,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:11,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719142360] [2024-11-23 23:57:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719142360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:11,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080229465] [2024-11-23 23:57:11,072 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:57:11,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:11,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:11,075 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:11,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:57:11,134 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 23:57:11,134 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:11,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:57:11,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:11,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080229465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:11,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:11,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-11-23 23:57:11,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434866791] [2024-11-23 23:57:11,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:11,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 23:57:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:11,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 23:57:11,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:57:11,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:57:11,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1445 transitions, 34763 flow. Second operand has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:11,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:57:11,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:57:11,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:57:17,026 INFO L124 PetriNetUnfolderBase]: 5087/8451 cut-off events. [2024-11-23 23:57:17,026 INFO L125 PetriNetUnfolderBase]: For 405691/405691 co-relation queries the response was YES. [2024-11-23 23:57:17,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91824 conditions, 8451 events. 5087/8451 cut-off events. For 405691/405691 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 53936 event pairs, 784 based on Foata normal form. 100/8551 useless extension candidates. Maximal degree in co-relation 91097. Up to 4051 conditions per place. [2024-11-23 23:57:17,137 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 860 selfloop transitions, 879 changer transitions 3/1743 dead transitions. [2024-11-23 23:57:17,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1743 transitions, 44195 flow [2024-11-23 23:57:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 23:57:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-23 23:57:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 271 transitions. [2024-11-23 23:57:17,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4363929146537842 [2024-11-23 23:57:17,139 INFO L175 Difference]: Start difference. First operand has 359 places, 1445 transitions, 34763 flow. Second operand 27 states and 271 transitions. [2024-11-23 23:57:17,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1743 transitions, 44195 flow [2024-11-23 23:57:22,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1743 transitions, 42901 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-11-23 23:57:22,600 INFO L231 Difference]: Finished difference. Result has 395 places, 1587 transitions, 40633 flow [2024-11-23 23:57:22,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=33649, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=749, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=40633, PETRI_PLACES=395, PETRI_TRANSITIONS=1587} [2024-11-23 23:57:22,603 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 370 predicate places. [2024-11-23 23:57:22,603 INFO L471 AbstractCegarLoop]: Abstraction has has 395 places, 1587 transitions, 40633 flow [2024-11-23 23:57:22,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:22,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:57:22,603 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:22,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:57:22,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:57:22,804 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:57:22,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1831603932, now seen corresponding path program 12 times [2024-11-23 23:57:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040427901] [2024-11-23 23:57:22,805 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 23:57:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:22,812 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-23 23:57:22,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:22,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:22,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:22,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040427901] [2024-11-23 23:57:22,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040427901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:22,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284411004] [2024-11-23 23:57:22,919 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 23:57:22,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:22,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:22,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:22,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:57:22,975 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-23 23:57:22,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:22,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:57:22,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:23,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:57:23,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284411004] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:23,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:57:23,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-11-23 23:57:23,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151721616] [2024-11-23 23:57:23,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:23,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:57:23,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:23,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:57:23,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:57:23,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:57:23,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1587 transitions, 40633 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:23,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:57:23,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:57:23,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:57:29,611 INFO L124 PetriNetUnfolderBase]: 5203/8614 cut-off events. [2024-11-23 23:57:29,611 INFO L125 PetriNetUnfolderBase]: For 471322/471322 co-relation queries the response was YES. [2024-11-23 23:57:29,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99924 conditions, 8614 events. 5203/8614 cut-off events. For 471322/471322 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 54872 event pairs, 1598 based on Foata normal form. 6/8620 useless extension candidates. Maximal degree in co-relation 99150. Up to 7771 conditions per place. [2024-11-23 23:57:29,728 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1534 selfloop transitions, 130 changer transitions 6/1671 dead transitions. [2024-11-23 23:57:29,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1671 transitions, 46183 flow [2024-11-23 23:57:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:57:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 23:57:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-11-23 23:57:29,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-11-23 23:57:29,730 INFO L175 Difference]: Start difference. First operand has 395 places, 1587 transitions, 40633 flow. Second operand 8 states and 87 transitions. [2024-11-23 23:57:29,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 1671 transitions, 46183 flow [2024-11-23 23:57:35,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 1671 transitions, 45365 flow, removed 366 selfloop flow, removed 5 redundant places. [2024-11-23 23:57:35,590 INFO L231 Difference]: Finished difference. Result has 401 places, 1632 transitions, 41569 flow [2024-11-23 23:57:35,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40019, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41569, PETRI_PLACES=401, PETRI_TRANSITIONS=1632} [2024-11-23 23:57:35,592 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 376 predicate places. [2024-11-23 23:57:35,592 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 1632 transitions, 41569 flow [2024-11-23 23:57:35,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:35,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:57:35,593 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:35,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:57:35,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:35,797 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:57:35,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:35,798 INFO L85 PathProgramCache]: Analyzing trace with hash 894434822, now seen corresponding path program 13 times [2024-11-23 23:57:35,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:35,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949415204] [2024-11-23 23:57:35,798 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 23:57:35,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:35,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949415204] [2024-11-23 23:57:35,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949415204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:57:35,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:57:35,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:57:35,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22076945] [2024-11-23 23:57:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:35,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:57:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:35,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:57:35,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:57:36,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:57:36,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 1632 transitions, 41569 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:36,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:57:36,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:57:36,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:57:42,245 INFO L124 PetriNetUnfolderBase]: 5197/8613 cut-off events. [2024-11-23 23:57:42,246 INFO L125 PetriNetUnfolderBase]: For 431780/431780 co-relation queries the response was YES. [2024-11-23 23:57:42,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98097 conditions, 8613 events. 5197/8613 cut-off events. For 431780/431780 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 54531 event pairs, 224 based on Foata normal form. 2/8615 useless extension candidates. Maximal degree in co-relation 97634. Up to 8424 conditions per place. [2024-11-23 23:57:42,412 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1619 selfloop transitions, 30 changer transitions 4/1654 dead transitions. [2024-11-23 23:57:42,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 1654 transitions, 45278 flow [2024-11-23 23:57:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:57:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 23:57:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-23 23:57:42,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40096618357487923 [2024-11-23 23:57:42,413 INFO L175 Difference]: Start difference. First operand has 401 places, 1632 transitions, 41569 flow. Second operand 9 states and 83 transitions. [2024-11-23 23:57:42,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 1654 transitions, 45278 flow [2024-11-23 23:57:48,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1654 transitions, 45212 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-23 23:57:48,773 INFO L231 Difference]: Finished difference. Result has 411 places, 1635 transitions, 41634 flow [2024-11-23 23:57:48,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=41503, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41634, PETRI_PLACES=411, PETRI_TRANSITIONS=1635} [2024-11-23 23:57:48,775 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 386 predicate places. [2024-11-23 23:57:48,775 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 1635 transitions, 41634 flow [2024-11-23 23:57:48,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:48,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:57:48,775 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:48,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:57:48,776 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:57:48,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 356579244, now seen corresponding path program 14 times [2024-11-23 23:57:48,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:48,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090222731] [2024-11-23 23:57:48,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:57:48,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:48,786 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:57:48,786 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:48,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090222731] [2024-11-23 23:57:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090222731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037700905] [2024-11-23 23:57:48,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:57:48,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:48,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:48,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:57:48,968 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:57:48,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:48,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:57:48,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:49,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:57:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037700905] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:49,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:57:49,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-11-23 23:57:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72639253] [2024-11-23 23:57:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:49,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:57:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:49,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:57:49,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:57:49,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:57:49,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 1635 transitions, 41634 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:49,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:57:49,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:57:49,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:57:56,200 INFO L124 PetriNetUnfolderBase]: 5624/9298 cut-off events. [2024-11-23 23:57:56,200 INFO L125 PetriNetUnfolderBase]: For 491509/491509 co-relation queries the response was YES. [2024-11-23 23:57:56,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107035 conditions, 9298 events. 5624/9298 cut-off events. For 491509/491509 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 59978 event pairs, 1532 based on Foata normal form. 12/9310 useless extension candidates. Maximal degree in co-relation 106838. Up to 7483 conditions per place. [2024-11-23 23:57:56,369 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 1530 selfloop transitions, 236 changer transitions 4/1771 dead transitions. [2024-11-23 23:57:56,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1771 transitions, 48458 flow [2024-11-23 23:57:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:57:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 23:57:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-11-23 23:57:56,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-11-23 23:57:56,370 INFO L175 Difference]: Start difference. First operand has 411 places, 1635 transitions, 41634 flow. Second operand 7 states and 82 transitions. [2024-11-23 23:57:56,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1771 transitions, 48458 flow [2024-11-23 23:58:03,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1771 transitions, 48383 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-23 23:58:03,837 INFO L231 Difference]: Finished difference. Result has 411 places, 1697 transitions, 44135 flow [2024-11-23 23:58:03,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=41575, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44135, PETRI_PLACES=411, PETRI_TRANSITIONS=1697} [2024-11-23 23:58:03,839 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 386 predicate places. [2024-11-23 23:58:03,839 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 1697 transitions, 44135 flow [2024-11-23 23:58:03,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:58:03,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:58:03,839 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:58:03,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 23:58:04,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:58:04,040 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:58:04,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:58:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash 183331552, now seen corresponding path program 15 times [2024-11-23 23:58:04,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:58:04,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851039893] [2024-11-23 23:58:04,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:58:04,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:58:04,052 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:58:04,052 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:58:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:58:04,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:58:04,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851039893] [2024-11-23 23:58:04,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851039893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:04,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753717002] [2024-11-23 23:58:04,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:58:04,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:04,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:58:04,185 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:58:04,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:58:04,248 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:58:04,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:58:04,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:58:04,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:58:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:58:04,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:58:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:58:04,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753717002] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:04,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:58:04,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-11-23 23:58:04,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673057641] [2024-11-23 23:58:04,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:58:04,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:58:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:58:04,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:58:04,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:58:04,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:58:04,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 1697 transitions, 44135 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:58:04,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:58:04,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:58:04,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:58:11,733 INFO L124 PetriNetUnfolderBase]: 5610/9297 cut-off events. [2024-11-23 23:58:11,733 INFO L125 PetriNetUnfolderBase]: For 514227/514227 co-relation queries the response was YES. [2024-11-23 23:58:11,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109144 conditions, 9297 events. 5610/9297 cut-off events. For 514227/514227 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 59959 event pairs, 807 based on Foata normal form. 26/9323 useless extension candidates. Maximal degree in co-relation 108674. Up to 4187 conditions per place. [2024-11-23 23:58:11,883 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 875 selfloop transitions, 969 changer transitions 1/1846 dead transitions. [2024-11-23 23:58:11,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1846 transitions, 50703 flow [2024-11-23 23:58:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:58:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 23:58:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-11-23 23:58:11,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49407114624505927 [2024-11-23 23:58:11,884 INFO L175 Difference]: Start difference. First operand has 411 places, 1697 transitions, 44135 flow. Second operand 11 states and 125 transitions. [2024-11-23 23:58:11,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1846 transitions, 50703 flow [2024-11-23 23:58:19,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 1846 transitions, 50590 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-23 23:58:19,629 INFO L231 Difference]: Finished difference. Result has 423 places, 1731 transitions, 48551 flow [2024-11-23 23:58:19,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=43992, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=942, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=48551, PETRI_PLACES=423, PETRI_TRANSITIONS=1731} [2024-11-23 23:58:19,631 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 398 predicate places. [2024-11-23 23:58:19,631 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 1731 transitions, 48551 flow [2024-11-23 23:58:19,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:58:19,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:58:19,632 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:58:19,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 23:58:19,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:19,832 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 23:58:19,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:58:19,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1127105172, now seen corresponding path program 16 times [2024-11-23 23:58:19,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:58:19,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077918931] [2024-11-23 23:58:19,833 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:58:19,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:58:19,842 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:58:19,842 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:58:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:58:20,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:58:20,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077918931] [2024-11-23 23:58:20,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077918931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:20,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896021327] [2024-11-23 23:58:20,051 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:58:20,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:20,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:58:20,054 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:58:20,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad35cceb-03a5-4ad6-b6a6-f645e4bdff09/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:58:20,112 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:58:20,112 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:58:20,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:58:20,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:58:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:58:20,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:58:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:58:20,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896021327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:58:20,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:58:20,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 6] total 16 [2024-11-23 23:58:20,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941226942] [2024-11-23 23:58:20,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:58:20,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:58:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:58:20,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:58:20,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:58:20,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 23:58:20,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1731 transitions, 48551 flow. Second operand has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 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) [2024-11-23 23:58:20,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:58:20,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 23:58:20,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand