./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:09:42,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:09:42,522 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:09:42,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:09:42,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:09:42,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:09:42,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:09:42,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:09:42,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:09:42,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:09:42,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:09:42,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:09:42,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:09:42,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:09:42,559 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:09:42,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:09:42,560 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:09:42,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:09:42,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:09:42,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:09:42,561 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:09:42,561 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:09:42,561 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:09:42,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:09:42,561 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:09:42,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:09:42,561 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:09:42,561 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:09:42,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:09:42,562 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:09:42,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:42,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:42,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:42,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:42,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:09:42,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:42,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:42,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:42,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:42,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:09:42,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:09:42,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:09:42,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:09:42,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:09:42,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:09:42,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:09:42,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:09:42,565 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_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2024-11-28 05:09:42,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:09:42,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:09:42,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:09:42,911 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:09:42,912 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:09:42,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-28 05:09:45,879 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/data/b8d4f3ea1/87b97d900abc4292896d45a5eeff1bc1/FLAG603028ad8 [2024-11-28 05:09:46,230 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:09:46,234 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-28 05:09:46,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/data/b8d4f3ea1/87b97d900abc4292896d45a5eeff1bc1/FLAG603028ad8 [2024-11-28 05:09:46,461 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/data/b8d4f3ea1/87b97d900abc4292896d45a5eeff1bc1 [2024-11-28 05:09:46,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:09:46,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:09:46,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:46,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:09:46,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:09:46,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5395310d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46, skipping insertion in model container [2024-11-28 05:09:46,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,496 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:09:46,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:46,749 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:09:46,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:46,788 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:09:46,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46 WrapperNode [2024-11-28 05:09:46,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:46,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:46,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:09:46,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:09:46,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,821 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-11-28 05:09:46,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:46,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:09:46,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:09:46,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:09:46,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,834 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,849 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 05:09:46,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,854 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:09:46,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:09:46,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:09:46,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:09:46,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (1/1) ... [2024-11-28 05:09:46,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:46,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:46,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:09:46,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:09:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:09:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:09:46,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:09:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:09:46,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:09:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:09:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 05:09:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 05:09:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:09:46,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:09:46,942 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:09:47,048 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:09:47,051 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:09:47,310 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:09:47,310 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:09:47,489 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:09:47,490 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:09:47,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:47 BoogieIcfgContainer [2024-11-28 05:09:47,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:09:47,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:09:47,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:09:47,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:09:47,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:09:46" (1/3) ... [2024-11-28 05:09:47,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489becb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:47, skipping insertion in model container [2024-11-28 05:09:47,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:46" (2/3) ... [2024-11-28 05:09:47,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489becb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:47, skipping insertion in model container [2024-11-28 05:09:47,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:47" (3/3) ... [2024-11-28 05:09:47,507 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-11-28 05:09:47,522 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:09:47,524 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. [2024-11-28 05:09:47,524 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:09:47,593 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 05:09:47,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-11-28 05:09:47,662 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-28 05:09:47,664 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:09:47,668 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. [2024-11-28 05:09:47,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-11-28 05:09:47,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-11-28 05:09:47,681 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:09:47,703 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;@1683f760, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:09:47,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 05:09:47,727 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:09:47,728 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-28 05:09:47,728 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:09:47,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:47,729 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:47,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:47,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1600270162, now seen corresponding path program 1 times [2024-11-28 05:09:47,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:47,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472915779] [2024-11-28 05:09:47,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:47,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:48,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472915779] [2024-11-28 05:09:48,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472915779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:48,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:48,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:48,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541764939] [2024-11-28 05:09:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:48,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:48,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:48,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:48,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:48,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-28 05:09:48,138 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) [2024-11-28 05:09:48,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:48,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-28 05:09:48,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:48,292 INFO L124 PetriNetUnfolderBase]: 70/137 cut-off events. [2024-11-28 05:09:48,292 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 05:09:48,293 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. [2024-11-28 05:09:48,296 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 20 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-28 05:09:48,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 113 flow [2024-11-28 05:09:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-11-28 05:09:48,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-11-28 05:09:48,317 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 49 transitions. [2024-11-28 05:09:48,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 113 flow [2024-11-28 05:09:48,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:09:48,329 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-11-28 05:09:48,332 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} [2024-11-28 05:09:48,338 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-11-28 05:09:48,339 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-11-28 05:09:48,339 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) [2024-11-28 05:09:48,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:48,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:48,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:09:48,340 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:48,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:48,341 INFO L85 PathProgramCache]: Analyzing trace with hash 184256333, now seen corresponding path program 1 times [2024-11-28 05:09:48,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:48,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628381967] [2024-11-28 05:09:48,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:48,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628381967] [2024-11-28 05:09:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628381967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:48,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684486935] [2024-11-28 05:09:48,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:48,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:48,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:48,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:48,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:48,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-28 05:09:48,512 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) [2024-11-28 05:09:48,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:48,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-28 05:09:48,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:48,648 INFO L124 PetriNetUnfolderBase]: 89/180 cut-off events. [2024-11-28 05:09:48,649 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-28 05:09:48,650 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. [2024-11-28 05:09:48,652 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-11-28 05:09:48,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 129 flow [2024-11-28 05:09:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-11-28 05:09:48,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-11-28 05:09:48,653 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 47 transitions. [2024-11-28 05:09:48,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 129 flow [2024-11-28 05:09:48,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:09:48,655 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-28 05:09:48,655 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} [2024-11-28 05:09:48,656 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-11-28 05:09:48,656 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-28 05:09:48,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:48,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:48,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:48,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:09:48,658 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:48,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:48,658 INFO L85 PathProgramCache]: Analyzing trace with hash 658132287, now seen corresponding path program 1 times [2024-11-28 05:09:48,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:48,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076563525] [2024-11-28 05:09:48,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:48,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:48,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076563525] [2024-11-28 05:09:48,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076563525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:48,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622499623] [2024-11-28 05:09:48,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:48,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:48,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:48,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:48,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:09:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:49,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:09:49,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:49,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:49,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622499623] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:49,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:49,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 5 [2024-11-28 05:09:49,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012488210] [2024-11-28 05:09:49,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:49,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:49,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:49,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:49,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:09:49,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-28 05:09:49,414 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) [2024-11-28 05:09:49,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:49,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-28 05:09:49,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:49,545 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-11-28 05:09:49,546 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-28 05:09:49,547 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. [2024-11-28 05:09:49,549 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 35 selfloop transitions, 5 changer transitions 3/46 dead transitions. [2024-11-28 05:09:49,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 46 transitions, 238 flow [2024-11-28 05:09:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:09:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-28 05:09:49,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-11-28 05:09:49,551 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 4 states and 63 transitions. [2024-11-28 05:09:49,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 46 transitions, 238 flow [2024-11-28 05:09:49,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:09:49,553 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 98 flow [2024-11-28 05:09:49,553 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} [2024-11-28 05:09:49,554 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2024-11-28 05:09:49,554 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 98 flow [2024-11-28 05:09:49,555 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) [2024-11-28 05:09:49,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:49,555 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:49,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:49,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:49,760 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:49,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:49,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1769464435, now seen corresponding path program 2 times [2024-11-28 05:09:49,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:49,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227333686] [2024-11-28 05:09:49,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:49,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:49,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:49,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227333686] [2024-11-28 05:09:49,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227333686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870321896] [2024-11-28 05:09:49,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:49,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:49,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:49,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:09:49,978 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:49,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:49,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:09:49,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:50,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:50,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870321896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:50,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:50,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-28 05:09:50,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81459709] [2024-11-28 05:09:50,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:50,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:09:50,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:50,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:09:50,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:09:50,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-28 05:09:50,392 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) [2024-11-28 05:09:50,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:50,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-28 05:09:50,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:50,632 INFO L124 PetriNetUnfolderBase]: 286/530 cut-off events. [2024-11-28 05:09:50,633 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-28 05:09:50,634 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. [2024-11-28 05:09:50,639 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 40 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-11-28 05:09:50,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 335 flow [2024-11-28 05:09:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:09:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:09:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-28 05:09:50,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-28 05:09:50,641 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 98 flow. Second operand 6 states and 70 transitions. [2024-11-28 05:09:50,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 335 flow [2024-11-28 05:09:50,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 55 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:09:50,648 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 219 flow [2024-11-28 05:09:50,648 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} [2024-11-28 05:09:50,649 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-11-28 05:09:50,649 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 219 flow [2024-11-28 05:09:50,650 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) [2024-11-28 05:09:50,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:50,650 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:50,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:50,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:50,854 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:50,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -251739490, now seen corresponding path program 3 times [2024-11-28 05:09:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487237519] [2024-11-28 05:09:50,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:09:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:50,870 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:09:50,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:51,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487237519] [2024-11-28 05:09:51,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487237519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:51,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803462833] [2024-11-28 05:09:51,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:09:51,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:51,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:51,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:51,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:09:51,108 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:09:51,108 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:51,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:09:51,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:51,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:51,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803462833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:51,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:51,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2024-11-28 05:09:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662934208] [2024-11-28 05:09:51,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:51,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:09:51,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:51,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:09:51,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:09:51,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:09:51,613 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) [2024-11-28 05:09:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:09:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:53,066 INFO L124 PetriNetUnfolderBase]: 627/1078 cut-off events. [2024-11-28 05:09:53,066 INFO L125 PetriNetUnfolderBase]: For 1710/1710 co-relation queries the response was YES. [2024-11-28 05:09:53,069 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. [2024-11-28 05:09:53,075 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 118 selfloop transitions, 97 changer transitions 23/239 dead transitions. [2024-11-28 05:09:53,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 239 transitions, 1673 flow [2024-11-28 05:09:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 05:09:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-28 05:09:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 359 transitions. [2024-11-28 05:09:53,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4107551487414188 [2024-11-28 05:09:53,079 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 219 flow. Second operand 38 states and 359 transitions. [2024-11-28 05:09:53,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 239 transitions, 1673 flow [2024-11-28 05:09:53,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 239 transitions, 1665 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-28 05:09:53,094 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 1096 flow [2024-11-28 05:09:53,094 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} [2024-11-28 05:09:53,095 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 69 predicate places. [2024-11-28 05:09:53,095 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 1096 flow [2024-11-28 05:09:53,095 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) [2024-11-28 05:09:53,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:53,096 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:53,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:53,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:53,296 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:53,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:53,297 INFO L85 PathProgramCache]: Analyzing trace with hash 706728402, now seen corresponding path program 4 times [2024-11-28 05:09:53,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:53,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699663549] [2024-11-28 05:09:53,297 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:09:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:53,308 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:09:53,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:53,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:53,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699663549] [2024-11-28 05:09:53,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699663549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:53,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107683309] [2024-11-28 05:09:53,400 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:09:53,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:53,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:53,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:53,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:09:53,457 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:09:53,457 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:53,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:09:53,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:53,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107683309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:53,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:53,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-28 05:09:53,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879821890] [2024-11-28 05:09:53,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:53,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:09:53,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:53,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:09:53,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:09:53,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:09:53,664 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) [2024-11-28 05:09:53,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:53,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:09:53,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:54,351 INFO L124 PetriNetUnfolderBase]: 889/1517 cut-off events. [2024-11-28 05:09:54,352 INFO L125 PetriNetUnfolderBase]: For 15497/15497 co-relation queries the response was YES. [2024-11-28 05:09:54,367 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. [2024-11-28 05:09:54,380 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 129 selfloop transitions, 135 changer transitions 0/265 dead transitions. [2024-11-28 05:09:54,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 265 transitions, 3003 flow [2024-11-28 05:09:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:09:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 05:09:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 169 transitions. [2024-11-28 05:09:54,383 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-11-28 05:09:54,383 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 1096 flow. Second operand 16 states and 169 transitions. [2024-11-28 05:09:54,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 265 transitions, 3003 flow [2024-11-28 05:09:54,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 2778 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-11-28 05:09:54,432 INFO L231 Difference]: Finished difference. Result has 115 places, 182 transitions, 2204 flow [2024-11-28 05:09:54,432 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} [2024-11-28 05:09:54,433 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 90 predicate places. [2024-11-28 05:09:54,433 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 182 transitions, 2204 flow [2024-11-28 05:09:54,434 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) [2024-11-28 05:09:54,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:54,434 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:54,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:54,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:54,634 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:54,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -710741524, now seen corresponding path program 5 times [2024-11-28 05:09:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:54,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140256887] [2024-11-28 05:09:54,635 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:09:54,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:54,656 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:54,656 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:54,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140256887] [2024-11-28 05:09:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140256887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:54,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299083117] [2024-11-28 05:09:54,840 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:09:54,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:54,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:54,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:54,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:09:54,902 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:54,902 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:54,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:09:54,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:55,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:55,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299083117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:55,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:55,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-28 05:09:55,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013885576] [2024-11-28 05:09:55,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:55,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:09:55,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:55,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:09:55,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:09:55,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:09:55,188 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) [2024-11-28 05:09:55,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:55,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:09:55,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:56,442 INFO L124 PetriNetUnfolderBase]: 1375/2291 cut-off events. [2024-11-28 05:09:56,443 INFO L125 PetriNetUnfolderBase]: For 35625/35625 co-relation queries the response was YES. [2024-11-28 05:09:56,458 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. [2024-11-28 05:09:56,477 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 202 selfloop transitions, 196 changer transitions 5/404 dead transitions. [2024-11-28 05:09:56,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 404 transitions, 5589 flow [2024-11-28 05:09:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 05:09:56,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 05:09:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 239 transitions. [2024-11-28 05:09:56,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4329710144927536 [2024-11-28 05:09:56,480 INFO L175 Difference]: Start difference. First operand has 115 places, 182 transitions, 2204 flow. Second operand 24 states and 239 transitions. [2024-11-28 05:09:56,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 404 transitions, 5589 flow [2024-11-28 05:09:56,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 404 transitions, 5379 flow, removed 105 selfloop flow, removed 0 redundant places. [2024-11-28 05:09:56,618 INFO L231 Difference]: Finished difference. Result has 146 places, 296 transitions, 4086 flow [2024-11-28 05:09:56,619 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} [2024-11-28 05:09:56,620 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 121 predicate places. [2024-11-28 05:09:56,620 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 296 transitions, 4086 flow [2024-11-28 05:09:56,620 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) [2024-11-28 05:09:56,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:56,622 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:56,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:56,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:56,826 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:56,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:56,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1786452680, now seen corresponding path program 6 times [2024-11-28 05:09:56,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:56,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120926407] [2024-11-28 05:09:56,827 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:09:56,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:56,839 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:09:56,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:56,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120926407] [2024-11-28 05:09:56,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120926407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378224170] [2024-11-28 05:09:56,981 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:09:56,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:56,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:56,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:56,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:09:57,052 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:09:57,052 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:57,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:09:57,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:57,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:57,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378224170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:57,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:57,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-11-28 05:09:57,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834787861] [2024-11-28 05:09:57,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:57,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:09:57,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:57,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:09:57,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:09:57,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:09:57,444 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) [2024-11-28 05:09:57,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:57,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:09:57,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:59,420 INFO L124 PetriNetUnfolderBase]: 1520/2542 cut-off events. [2024-11-28 05:09:59,420 INFO L125 PetriNetUnfolderBase]: For 50817/50817 co-relation queries the response was YES. [2024-11-28 05:09:59,429 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. [2024-11-28 05:09:59,442 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 183 selfloop transitions, 322 changer transitions 5/511 dead transitions. [2024-11-28 05:09:59,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 511 transitions, 7586 flow [2024-11-28 05:09:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 05:09:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-28 05:09:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 380 transitions. [2024-11-28 05:09:59,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4236343366778149 [2024-11-28 05:09:59,445 INFO L175 Difference]: Start difference. First operand has 146 places, 296 transitions, 4086 flow. Second operand 39 states and 380 transitions. [2024-11-28 05:09:59,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 511 transitions, 7586 flow [2024-11-28 05:09:59,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 511 transitions, 6912 flow, removed 321 selfloop flow, removed 4 redundant places. [2024-11-28 05:09:59,693 INFO L231 Difference]: Finished difference. Result has 205 places, 383 transitions, 6021 flow [2024-11-28 05:09:59,693 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} [2024-11-28 05:09:59,694 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 180 predicate places. [2024-11-28 05:09:59,694 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 383 transitions, 6021 flow [2024-11-28 05:09:59,694 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) [2024-11-28 05:09:59,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:59,695 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:59,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:59,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:59,899 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:59,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -141176036, now seen corresponding path program 7 times [2024-11-28 05:09:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:59,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638158147] [2024-11-28 05:09:59,900 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:09:59,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:00,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:00,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638158147] [2024-11-28 05:10:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638158147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:00,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422560897] [2024-11-28 05:10:00,143 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:10:00,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:00,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:00,145 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:00,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:10:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:00,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:10:00,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:00,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:00,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422560897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:00,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:00,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2024-11-28 05:10:00,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501258989] [2024-11-28 05:10:00,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:00,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:10:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:00,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:10:00,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:10:00,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:10:00,669 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) [2024-11-28 05:10:00,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:00,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:10:00,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:03,451 INFO L124 PetriNetUnfolderBase]: 2749/4596 cut-off events. [2024-11-28 05:10:03,452 INFO L125 PetriNetUnfolderBase]: For 112715/112715 co-relation queries the response was YES. [2024-11-28 05:10:03,484 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. [2024-11-28 05:10:03,529 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 372 selfloop transitions, 590 changer transitions 2/965 dead transitions. [2024-11-28 05:10:03,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 965 transitions, 16620 flow [2024-11-28 05:10:03,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 05:10:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-28 05:10:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 431 transitions. [2024-11-28 05:10:03,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40737240075614367 [2024-11-28 05:10:03,532 INFO L175 Difference]: Start difference. First operand has 205 places, 383 transitions, 6021 flow. Second operand 46 states and 431 transitions. [2024-11-28 05:10:03,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 965 transitions, 16620 flow [2024-11-28 05:10:04,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 965 transitions, 15881 flow, removed 236 selfloop flow, removed 10 redundant places. [2024-11-28 05:10:04,109 INFO L231 Difference]: Finished difference. Result has 264 places, 735 transitions, 13564 flow [2024-11-28 05:10:04,110 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} [2024-11-28 05:10:04,110 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 239 predicate places. [2024-11-28 05:10:04,110 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 735 transitions, 13564 flow [2024-11-28 05:10:04,111 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) [2024-11-28 05:10:04,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:04,111 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:04,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:10:04,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:04,362 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:10:04,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:04,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1390002224, now seen corresponding path program 8 times [2024-11-28 05:10:04,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:04,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399205110] [2024-11-28 05:10:04,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:10:04,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:04,372 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:10:04,373 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:04,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399205110] [2024-11-28 05:10:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399205110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218070683] [2024-11-28 05:10:04,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:10:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:04,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:04,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:10:04,552 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:10:04,552 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:04,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:10:04,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:04,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218070683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:04,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-11-28 05:10:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913844849] [2024-11-28 05:10:04,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:04,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:10:04,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:04,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:10:04,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:10:04,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:10:04,883 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) [2024-11-28 05:10:04,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:04,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:10:04,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:08,902 INFO L124 PetriNetUnfolderBase]: 3976/6570 cut-off events. [2024-11-28 05:10:08,903 INFO L125 PetriNetUnfolderBase]: For 258118/258118 co-relation queries the response was YES. [2024-11-28 05:10:08,936 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. [2024-11-28 05:10:08,987 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 311 selfloop transitions, 1051 changer transitions 7/1370 dead transitions. [2024-11-28 05:10:08,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1370 transitions, 28854 flow [2024-11-28 05:10:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 05:10:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-28 05:10:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 412 transitions. [2024-11-28 05:10:08,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39806763285024155 [2024-11-28 05:10:08,990 INFO L175 Difference]: Start difference. First operand has 264 places, 735 transitions, 13564 flow. Second operand 45 states and 412 transitions. [2024-11-28 05:10:08,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1370 transitions, 28854 flow [2024-11-28 05:10:10,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1370 transitions, 27545 flow, removed 641 selfloop flow, removed 3 redundant places. [2024-11-28 05:10:10,764 INFO L231 Difference]: Finished difference. Result has 325 places, 1229 transitions, 26266 flow [2024-11-28 05:10:10,764 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} [2024-11-28 05:10:10,765 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 300 predicate places. [2024-11-28 05:10:10,765 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 1229 transitions, 26266 flow [2024-11-28 05:10:10,766 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) [2024-11-28 05:10:10,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:10,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:10,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:10,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:10,966 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:10:10,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash 565589266, now seen corresponding path program 9 times [2024-11-28 05:10:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:10,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005051484] [2024-11-28 05:10:10,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:10:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:10,979 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:10:10,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:11,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005051484] [2024-11-28 05:10:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005051484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246446507] [2024-11-28 05:10:11,084 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:10:11,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:11,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:11,087 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:11,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:10:11,147 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:10:11,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:11,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:10:11,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:11,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:11,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246446507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:11,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:11,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-11-28 05:10:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694806729] [2024-11-28 05:10:11,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:11,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:10:11,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:11,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:10:11,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:10:11,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:10:11,411 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) [2024-11-28 05:10:11,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:11,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:10:11,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:15,720 INFO L124 PetriNetUnfolderBase]: 4629/7667 cut-off events. [2024-11-28 05:10:15,720 INFO L125 PetriNetUnfolderBase]: For 335320/335320 co-relation queries the response was YES. [2024-11-28 05:10:15,767 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. [2024-11-28 05:10:15,821 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 369 selfloop transitions, 1214 changer transitions 2/1586 dead transitions. [2024-11-28 05:10:15,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 1586 transitions, 36554 flow [2024-11-28 05:10:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 05:10:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-28 05:10:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 412 transitions. [2024-11-28 05:10:15,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2024-11-28 05:10:15,824 INFO L175 Difference]: Start difference. First operand has 325 places, 1229 transitions, 26266 flow. Second operand 44 states and 412 transitions. [2024-11-28 05:10:15,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 1586 transitions, 36554 flow [2024-11-28 05:10:18,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1586 transitions, 35233 flow, removed 478 selfloop flow, removed 11 redundant places. [2024-11-28 05:10:18,729 INFO L231 Difference]: Finished difference. Result has 370 places, 1443 transitions, 33866 flow [2024-11-28 05:10:18,730 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} [2024-11-28 05:10:18,731 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 345 predicate places. [2024-11-28 05:10:18,731 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 1443 transitions, 33866 flow [2024-11-28 05:10:18,731 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) [2024-11-28 05:10:18,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:18,731 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:18,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:10:18,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 05:10:18,932 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:10:18,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash 852146646, now seen corresponding path program 10 times [2024-11-28 05:10:18,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:18,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737650293] [2024-11-28 05:10:18,933 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:10:18,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:18,939 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:10:18,939 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:18,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737650293] [2024-11-28 05:10:19,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737650293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075098077] [2024-11-28 05:10:19,000 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:10:19,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:19,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:19,002 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:19,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:10:19,049 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:10:19,049 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:19,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:10:19,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:19,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075098077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:19,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:19,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-11-28 05:10:19,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536100470] [2024-11-28 05:10:19,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:19,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:10:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:19,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:10:19,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:10:19,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:10:19,215 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) [2024-11-28 05:10:19,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:19,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:10:19,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:23,583 INFO L124 PetriNetUnfolderBase]: 4629/7667 cut-off events. [2024-11-28 05:10:23,583 INFO L125 PetriNetUnfolderBase]: For 390412/390412 co-relation queries the response was YES. [2024-11-28 05:10:23,839 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. [2024-11-28 05:10:23,888 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 836 selfloop transitions, 666 changer transitions 2/1505 dead transitions. [2024-11-28 05:10:23,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1505 transitions, 38141 flow [2024-11-28 05:10:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:10:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:10:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-11-28 05:10:23,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.466403162055336 [2024-11-28 05:10:23,889 INFO L175 Difference]: Start difference. First operand has 370 places, 1443 transitions, 33866 flow. Second operand 11 states and 118 transitions. [2024-11-28 05:10:23,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1505 transitions, 38141 flow [2024-11-28 05:10:27,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1505 transitions, 37232 flow, removed 248 selfloop flow, removed 20 redundant places. [2024-11-28 05:10:27,668 INFO L231 Difference]: Finished difference. Result has 359 places, 1445 transitions, 34763 flow [2024-11-28 05:10:27,669 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} [2024-11-28 05:10:27,670 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 334 predicate places. [2024-11-28 05:10:27,670 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 1445 transitions, 34763 flow [2024-11-28 05:10:27,670 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) [2024-11-28 05:10:27,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:27,670 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:27,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:10:27,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 05:10:27,871 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:10:27,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:27,871 INFO L85 PathProgramCache]: Analyzing trace with hash 406554224, now seen corresponding path program 11 times [2024-11-28 05:10:27,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:27,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253258011] [2024-11-28 05:10:27,871 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:10:27,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:27,885 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 05:10:27,885 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:28,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253258011] [2024-11-28 05:10:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253258011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353074946] [2024-11-28 05:10:28,050 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:10:28,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:28,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:28,052 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:28,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:10:28,107 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 05:10:28,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:28,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:10:28,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:28,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353074946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:28,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:28,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-11-28 05:10:28,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927457687] [2024-11-28 05:10:28,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:28,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:10:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:28,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:10:28,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:10:28,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:10:28,378 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) [2024-11-28 05:10:28,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:28,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:10:28,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:34,229 INFO L124 PetriNetUnfolderBase]: 5087/8451 cut-off events. [2024-11-28 05:10:34,229 INFO L125 PetriNetUnfolderBase]: For 405691/405691 co-relation queries the response was YES. [2024-11-28 05:10:34,294 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. [2024-11-28 05:10:34,347 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 860 selfloop transitions, 879 changer transitions 3/1743 dead transitions. [2024-11-28 05:10:34,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1743 transitions, 44195 flow [2024-11-28 05:10:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 05:10:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 05:10:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 271 transitions. [2024-11-28 05:10:34,349 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4363929146537842 [2024-11-28 05:10:34,349 INFO L175 Difference]: Start difference. First operand has 359 places, 1445 transitions, 34763 flow. Second operand 27 states and 271 transitions. [2024-11-28 05:10:34,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1743 transitions, 44195 flow [2024-11-28 05:10:39,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1743 transitions, 42901 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-11-28 05:10:39,830 INFO L231 Difference]: Finished difference. Result has 395 places, 1587 transitions, 40633 flow [2024-11-28 05:10:39,831 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} [2024-11-28 05:10:39,832 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 370 predicate places. [2024-11-28 05:10:39,832 INFO L471 AbstractCegarLoop]: Abstraction has has 395 places, 1587 transitions, 40633 flow [2024-11-28 05:10:39,832 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) [2024-11-28 05:10:39,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:39,833 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:39,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:10:40,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:10:40,033 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:10:40,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:40,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1831603932, now seen corresponding path program 12 times [2024-11-28 05:10:40,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:40,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989112690] [2024-11-28 05:10:40,034 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:10:40,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:40,045 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 05:10:40,045 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:40,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:40,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989112690] [2024-11-28 05:10:40,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989112690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:40,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698737997] [2024-11-28 05:10:40,177 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:10:40,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:40,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:40,179 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:40,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:10:40,239 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 05:10:40,239 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:10:40,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:10:40,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:40,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:10:40,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698737997] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:40,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:10:40,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-11-28 05:10:40,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738005427] [2024-11-28 05:10:40,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:40,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:10:40,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:40,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:10:40,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:10:40,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:10:40,526 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) [2024-11-28 05:10:40,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:40,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:10:40,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:45,687 INFO L124 PetriNetUnfolderBase]: 5203/8614 cut-off events. [2024-11-28 05:10:45,688 INFO L125 PetriNetUnfolderBase]: For 471322/471322 co-relation queries the response was YES. [2024-11-28 05:10:45,788 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. [2024-11-28 05:10:45,830 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1534 selfloop transitions, 130 changer transitions 6/1671 dead transitions. [2024-11-28 05:10:45,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1671 transitions, 46183 flow [2024-11-28 05:10:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:10:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:10:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-11-28 05:10:45,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-11-28 05:10:45,832 INFO L175 Difference]: Start difference. First operand has 395 places, 1587 transitions, 40633 flow. Second operand 8 states and 87 transitions. [2024-11-28 05:10:45,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 1671 transitions, 46183 flow [2024-11-28 05:10:52,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 1671 transitions, 45365 flow, removed 366 selfloop flow, removed 5 redundant places. [2024-11-28 05:10:52,186 INFO L231 Difference]: Finished difference. Result has 401 places, 1632 transitions, 41569 flow [2024-11-28 05:10:52,187 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} [2024-11-28 05:10:52,188 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 376 predicate places. [2024-11-28 05:10:52,188 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 1632 transitions, 41569 flow [2024-11-28 05:10:52,188 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) [2024-11-28 05:10:52,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:10:52,188 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:52,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:52,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:52,389 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:10:52,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:52,389 INFO L85 PathProgramCache]: Analyzing trace with hash 894434822, now seen corresponding path program 13 times [2024-11-28 05:10:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:52,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978820885] [2024-11-28 05:10:52,389 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:10:52,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:52,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978820885] [2024-11-28 05:10:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978820885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:52,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:52,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:10:52,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53346467] [2024-11-28 05:10:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:52,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:10:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:52,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:10:52,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:10:52,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:10:52,590 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) [2024-11-28 05:10:52,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:10:52,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:10:52,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:10:58,535 INFO L124 PetriNetUnfolderBase]: 5197/8613 cut-off events. [2024-11-28 05:10:58,535 INFO L125 PetriNetUnfolderBase]: For 431780/431780 co-relation queries the response was YES. [2024-11-28 05:10:58,616 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. [2024-11-28 05:10:58,656 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1619 selfloop transitions, 30 changer transitions 4/1654 dead transitions. [2024-11-28 05:10:58,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 1654 transitions, 45278 flow [2024-11-28 05:10:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:10:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:10:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-28 05:10:58,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40096618357487923 [2024-11-28 05:10:58,657 INFO L175 Difference]: Start difference. First operand has 401 places, 1632 transitions, 41569 flow. Second operand 9 states and 83 transitions. [2024-11-28 05:10:58,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 1654 transitions, 45278 flow [2024-11-28 05:11:04,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1654 transitions, 45212 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-28 05:11:04,842 INFO L231 Difference]: Finished difference. Result has 411 places, 1635 transitions, 41634 flow [2024-11-28 05:11:04,843 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} [2024-11-28 05:11:04,843 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 386 predicate places. [2024-11-28 05:11:04,843 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 1635 transitions, 41634 flow [2024-11-28 05:11:04,844 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) [2024-11-28 05:11:04,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:11:04,844 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:04,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:11:04,844 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:11:04,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:04,845 INFO L85 PathProgramCache]: Analyzing trace with hash 356579244, now seen corresponding path program 14 times [2024-11-28 05:11:04,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:04,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756224357] [2024-11-28 05:11:04,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:11:04,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:04,854 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:11:04,854 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:11:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756224357] [2024-11-28 05:11:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756224357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744589638] [2024-11-28 05:11:04,980 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:11:04,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:04,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:04,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:04,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:11:05,043 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:11:05,043 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:11:05,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:11:05,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:05,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:11:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744589638] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:05,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:11:05,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-11-28 05:11:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144816428] [2024-11-28 05:11:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:05,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:11:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:05,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:11:05,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:11:05,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:11:05,306 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) [2024-11-28 05:11:05,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:11:05,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:11:05,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:11:11,780 INFO L124 PetriNetUnfolderBase]: 5624/9298 cut-off events. [2024-11-28 05:11:11,781 INFO L125 PetriNetUnfolderBase]: For 491509/491509 co-relation queries the response was YES. [2024-11-28 05:11:11,919 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. [2024-11-28 05:11:11,987 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 1530 selfloop transitions, 236 changer transitions 4/1771 dead transitions. [2024-11-28 05:11:11,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1771 transitions, 48458 flow [2024-11-28 05:11:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:11:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:11:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-11-28 05:11:11,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-11-28 05:11:11,989 INFO L175 Difference]: Start difference. First operand has 411 places, 1635 transitions, 41634 flow. Second operand 7 states and 82 transitions. [2024-11-28 05:11:11,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1771 transitions, 48458 flow [2024-11-28 05:11:20,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1771 transitions, 48383 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-28 05:11:20,299 INFO L231 Difference]: Finished difference. Result has 411 places, 1697 transitions, 44135 flow [2024-11-28 05:11:20,300 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} [2024-11-28 05:11:20,300 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 386 predicate places. [2024-11-28 05:11:20,300 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 1697 transitions, 44135 flow [2024-11-28 05:11:20,300 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) [2024-11-28 05:11:20,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:11:20,301 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:20,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:20,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:11:20,505 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:11:20,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash 183331552, now seen corresponding path program 15 times [2024-11-28 05:11:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458697268] [2024-11-28 05:11:20,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:11:20,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:20,515 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:11:20,515 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:11:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458697268] [2024-11-28 05:11:20,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458697268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460310931] [2024-11-28 05:11:20,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:11:20,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:20,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:20,645 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:20,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:11:20,707 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:11:20,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:11:20,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:11:20,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:20,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:20,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:11:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460310931] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:21,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:11:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-11-28 05:11:21,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068119203] [2024-11-28 05:11:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:21,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:11:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:21,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:11:21,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:11:21,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:11:21,015 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) [2024-11-28 05:11:21,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:11:21,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:11:21,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:11:28,340 INFO L124 PetriNetUnfolderBase]: 5610/9297 cut-off events. [2024-11-28 05:11:28,341 INFO L125 PetriNetUnfolderBase]: For 514227/514227 co-relation queries the response was YES. [2024-11-28 05:11:28,467 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. [2024-11-28 05:11:28,516 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 875 selfloop transitions, 969 changer transitions 1/1846 dead transitions. [2024-11-28 05:11:28,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1846 transitions, 50703 flow [2024-11-28 05:11:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:11:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:11:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-11-28 05:11:28,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49407114624505927 [2024-11-28 05:11:28,518 INFO L175 Difference]: Start difference. First operand has 411 places, 1697 transitions, 44135 flow. Second operand 11 states and 125 transitions. [2024-11-28 05:11:28,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1846 transitions, 50703 flow [2024-11-28 05:11:36,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 1846 transitions, 50590 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-28 05:11:36,420 INFO L231 Difference]: Finished difference. Result has 423 places, 1731 transitions, 48551 flow [2024-11-28 05:11:36,422 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} [2024-11-28 05:11:36,423 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 398 predicate places. [2024-11-28 05:11:36,423 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 1731 transitions, 48551 flow [2024-11-28 05:11:36,423 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) [2024-11-28 05:11:36,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:11:36,423 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:36,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 05:11:36,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:11:36,628 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:11:36,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1127105172, now seen corresponding path program 16 times [2024-11-28 05:11:36,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:36,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999105203] [2024-11-28 05:11:36,629 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:11:36,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:36,639 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:11:36,640 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:11:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:36,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999105203] [2024-11-28 05:11:36,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999105203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288950167] [2024-11-28 05:11:36,840 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:11:36,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:36,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:36,843 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:36,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:11:36,902 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:11:36,902 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:11:36,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:11:36,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:36,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:11:37,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288950167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:11:37,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:11:37,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 6] total 16 [2024-11-28 05:11:37,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407709620] [2024-11-28 05:11:37,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:37,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:11:37,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:37,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:11:37,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:11:37,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:11:37,352 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) [2024-11-28 05:11:37,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:11:37,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:11:37,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:11:51,475 INFO L124 PetriNetUnfolderBase]: 11940/19726 cut-off events. [2024-11-28 05:11:51,475 INFO L125 PetriNetUnfolderBase]: For 1311991/1311991 co-relation queries the response was YES. [2024-11-28 05:11:51,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247357 conditions, 19726 events. 11940/19726 cut-off events. For 1311991/1311991 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 139415 event pairs, 148 based on Foata normal form. 100/19826 useless extension candidates. Maximal degree in co-relation 246633. Up to 5685 conditions per place. [2024-11-28 05:11:51,852 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 1936 selfloop transitions, 2055 changer transitions 398/4390 dead transitions. [2024-11-28 05:11:51,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 4390 transitions, 129444 flow [2024-11-28 05:11:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 05:11:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 05:11:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 279 transitions. [2024-11-28 05:11:51,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5513833992094862 [2024-11-28 05:11:51,853 INFO L175 Difference]: Start difference. First operand has 423 places, 1731 transitions, 48551 flow. Second operand 22 states and 279 transitions. [2024-11-28 05:11:51,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 4390 transitions, 129444 flow [2024-11-28 05:12:13,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 4390 transitions, 128213 flow, removed 263 selfloop flow, removed 9 redundant places. [2024-11-28 05:12:13,901 INFO L231 Difference]: Finished difference. Result has 456 places, 3086 transitions, 98589 flow [2024-11-28 05:12:13,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=48150, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=943, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=98589, PETRI_PLACES=456, PETRI_TRANSITIONS=3086} [2024-11-28 05:12:13,903 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 431 predicate places. [2024-11-28 05:12:13,903 INFO L471 AbstractCegarLoop]: Abstraction has has 456 places, 3086 transitions, 98589 flow [2024-11-28 05:12:13,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-28 05:12:13,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:12:13,904 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:13,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:12:14,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:12:14,104 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:12:14,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1999995184, now seen corresponding path program 17 times [2024-11-28 05:12:14,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:14,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189052689] [2024-11-28 05:12:14,105 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:12:14,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:14,114 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:12:14,114 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:12:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:12:14,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189052689] [2024-11-28 05:12:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189052689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901667806] [2024-11-28 05:12:14,226 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:12:14,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:14,228 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:14,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_495358db-b3b9-47e5-8417-21dee70849c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:12:14,283 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:12:14,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:12:14,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:12:14,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:12:14,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:14,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901667806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:14,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:12:14,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-11-28 05:12:14,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545196111] [2024-11-28 05:12:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:14,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:12:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:14,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:12:14,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:12:14,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-28 05:12:14,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 3086 transitions, 98589 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:12:14,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:12:14,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-28 05:12:14,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand