./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --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_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/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_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/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_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:24:02,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:24:02,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 20:24:02,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:24:02,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:24:02,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:24:02,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:24:02,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:24:02,543 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:24:02,543 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:24:02,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:24:02,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:24:02,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:24:02,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:24:02,546 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:24:02,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:24:02,546 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:24:02,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:24:02,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:24:02,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:24:02,548 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:24:02,548 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:24:02,548 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:24:02,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:24:02,548 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:24:02,548 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:24:02,549 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:24:02,549 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:24:02,549 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:24:02,549 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:24:02,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:02,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:02,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:02,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:02,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:24:02,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:02,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:02,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:02,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:02,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:24:02,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:24:02,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:24:02,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:24:02,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:24:02,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:24:02,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:24:02,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:24:02,551 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_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/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 -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2024-11-27 20:24:02,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:24:02,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:24:02,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:24:02,914 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:24:02,915 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:24:02,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2024-11-27 20:24:06,023 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data/043e42507/8465e44c6b5743258fe69721df0760ae/FLAG49b1b804b [2024-11-27 20:24:06,354 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:24:06,355 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/sv-benchmarks/c/pthread/triangular-longest-2.i [2024-11-27 20:24:06,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data/043e42507/8465e44c6b5743258fe69721df0760ae/FLAG49b1b804b [2024-11-27 20:24:06,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data/043e42507/8465e44c6b5743258fe69721df0760ae [2024-11-27 20:24:06,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:24:06,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:24:06,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:24:06,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:24:06,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:24:06,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:06,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b274e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06, skipping insertion in model container [2024-11-27 20:24:06,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:06,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:24:06,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:24:06,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:24:06,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:24:06,923 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:24:06,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06 WrapperNode [2024-11-27 20:24:06,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:24:06,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:24:06,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:24:06,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:24:06,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:06,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:06,985 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-27 20:24:06,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:24:06,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:24:06,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:24:06,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:24:06,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:06,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,021 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]. [2024-11-27 20:24:07,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,027 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:24:07,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:24:07,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:24:07,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:24:07,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (1/1) ... [2024-11-27 20:24:07,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:07,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:07,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:24:07,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:24:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-27 20:24:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-27 20:24:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-27 20:24:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-27 20:24:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:24:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:24:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:24:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:24:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:24:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:24:07,136 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:24:07,264 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:24:07,267 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:24:07,413 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:24:07,413 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:24:07,564 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:24:07,564 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:24:07,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:07 BoogieIcfgContainer [2024-11-27 20:24:07,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:24:07,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:24:07,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:24:07,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:24:07,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:24:06" (1/3) ... [2024-11-27 20:24:07,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7542e69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:24:07, skipping insertion in model container [2024-11-27 20:24:07,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:06" (2/3) ... [2024-11-27 20:24:07,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7542e69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:24:07, skipping insertion in model container [2024-11-27 20:24:07,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:07" (3/3) ... [2024-11-27 20:24:07,579 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2024-11-27 20:24:07,597 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:24:07,599 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 20:24:07,599 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:24:07,674 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:24:07,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-27 20:24:07,772 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-27 20:24:07,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:24:07,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-27 20:24:07,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-27 20:24:07,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-27 20:24:07,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:24:07,820 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;@4a711633, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:24:07,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 20:24:07,832 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:24:07,833 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-27 20:24:07,833 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:24:07,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:07,834 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:07,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:07,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -704578515, now seen corresponding path program 1 times [2024-11-27 20:24:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:07,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545691776] [2024-11-27 20:24:07,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:08,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:08,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545691776] [2024-11-27 20:24:08,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545691776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:08,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:08,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:24:08,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192982237] [2024-11-27 20:24:08,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:08,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:24:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:08,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:24:08,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:24:08,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-27 20:24:08,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:08,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:08,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-27 20:24:08,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:08,269 INFO L124 PetriNetUnfolderBase]: 70/159 cut-off events. [2024-11-27 20:24:08,269 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:24:08,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 159 events. 70/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 568 event pairs, 44 based on Foata normal form. 15/162 useless extension candidates. Maximal degree in co-relation 274. Up to 113 conditions per place. [2024-11-27 20:24:08,277 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-11-27 20:24:08,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-11-27 20:24:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:24:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:24:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-27 20:24:08,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-27 20:24:08,301 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-27 20:24:08,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-11-27 20:24:08,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:24:08,309 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-11-27 20:24:08,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-11-27 20:24:08,317 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-27 20:24:08,317 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-11-27 20:24:08,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:08,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:08,318 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:08,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:24:08,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:08,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash -704577352, now seen corresponding path program 1 times [2024-11-27 20:24:08,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:08,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458178326] [2024-11-27 20:24:08,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:08,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:08,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458178326] [2024-11-27 20:24:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458178326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:08,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:24:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167103554] [2024-11-27 20:24:08,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:08,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:24:08,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:08,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:24:08,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:24:08,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:08,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-11-27 20:24:08,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:08,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:08,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:09,058 INFO L124 PetriNetUnfolderBase]: 273/488 cut-off events. [2024-11-27 20:24:09,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:24:09,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 488 events. 273/488 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2002 event pairs, 45 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 922. Up to 181 conditions per place. [2024-11-27 20:24:09,062 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2024-11-27 20:24:09,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2024-11-27 20:24:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:24:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:24:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-11-27 20:24:09,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-27 20:24:09,064 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2024-11-27 20:24:09,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2024-11-27 20:24:09,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:24:09,067 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2024-11-27 20:24:09,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2024-11-27 20:24:09,068 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-27 20:24:09,068 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2024-11-27 20:24:09,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-11-27 20:24:09,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:09,069 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:09,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:24:09,069 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:09,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1380359534, now seen corresponding path program 1 times [2024-11-27 20:24:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759626112] [2024-11-27 20:24:09,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:09,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:09,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759626112] [2024-11-27 20:24:09,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759626112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:09,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:09,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:24:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034775854] [2024-11-27 20:24:09,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:09,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:09,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:09,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:09,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:09,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:09,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:09,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:09,659 INFO L124 PetriNetUnfolderBase]: 382/705 cut-off events. [2024-11-27 20:24:09,659 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-11-27 20:24:09,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 705 events. 382/705 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3087 event pairs, 65 based on Foata normal form. 27/728 useless extension candidates. Maximal degree in co-relation 1592. Up to 246 conditions per place. [2024-11-27 20:24:09,669 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2024-11-27 20:24:09,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2024-11-27 20:24:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:24:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:24:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-27 20:24:09,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-27 20:24:09,674 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2024-11-27 20:24:09,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2024-11-27 20:24:09,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-27 20:24:09,679 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2024-11-27 20:24:09,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-27 20:24:09,680 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-11-27 20:24:09,680 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2024-11-27 20:24:09,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:09,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:09,680 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:09,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:24:09,681 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:09,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:09,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1497371246, now seen corresponding path program 2 times [2024-11-27 20:24:09,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:09,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665337401] [2024-11-27 20:24:09,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:09,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:09,695 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:24:09,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:09,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665337401] [2024-11-27 20:24:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665337401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:09,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:09,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:24:09,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227791506] [2024-11-27 20:24:09,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:09,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:09,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:09,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:09,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:09,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:09,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:09,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:09,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:09,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:10,224 INFO L124 PetriNetUnfolderBase]: 328/612 cut-off events. [2024-11-27 20:24:10,224 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-27 20:24:10,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 612 events. 328/612 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2609 event pairs, 65 based on Foata normal form. 45/653 useless extension candidates. Maximal degree in co-relation 1724. Up to 234 conditions per place. [2024-11-27 20:24:10,231 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2024-11-27 20:24:10,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2024-11-27 20:24:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:24:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:24:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-11-27 20:24:10,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-11-27 20:24:10,235 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2024-11-27 20:24:10,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2024-11-27 20:24:10,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-27 20:24:10,247 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2024-11-27 20:24:10,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-11-27 20:24:10,248 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-11-27 20:24:10,249 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2024-11-27 20:24:10,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:10,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:10,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:10,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:24:10,250 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:10,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash -160173143, now seen corresponding path program 1 times [2024-11-27 20:24:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:10,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676002816] [2024-11-27 20:24:10,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:10,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:10,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676002816] [2024-11-27 20:24:10,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676002816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:10,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:24:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752767292] [2024-11-27 20:24:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:10,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:24:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:10,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:24:10,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:24:10,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:10,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:10,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:10,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:10,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:10,863 INFO L124 PetriNetUnfolderBase]: 355/663 cut-off events. [2024-11-27 20:24:10,864 INFO L125 PetriNetUnfolderBase]: For 1747/1747 co-relation queries the response was YES. [2024-11-27 20:24:10,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 663 events. 355/663 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2911 event pairs, 86 based on Foata normal form. 18/677 useless extension candidates. Maximal degree in co-relation 2047. Up to 258 conditions per place. [2024-11-27 20:24:10,870 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 43 selfloop transitions, 16 changer transitions 21/84 dead transitions. [2024-11-27 20:24:10,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 600 flow [2024-11-27 20:24:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:24:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:24:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-27 20:24:10,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-27 20:24:10,875 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 9 states and 140 transitions. [2024-11-27 20:24:10,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 600 flow [2024-11-27 20:24:10,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 530 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-27 20:24:10,888 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 300 flow [2024-11-27 20:24:10,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-11-27 20:24:10,890 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-11-27 20:24:10,892 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 300 flow [2024-11-27 20:24:10,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:10,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:10,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:10,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:24:10,893 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:10,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash 933707891, now seen corresponding path program 2 times [2024-11-27 20:24:10,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:10,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447692131] [2024-11-27 20:24:10,894 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:10,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:10,914 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:24:10,914 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:11,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:11,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447692131] [2024-11-27 20:24:11,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447692131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:11,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:11,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:24:11,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548976106] [2024-11-27 20:24:11,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:11,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:24:11,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:11,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:24:11,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:24:11,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:11,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:11,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:11,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:11,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:11,594 INFO L124 PetriNetUnfolderBase]: 463/852 cut-off events. [2024-11-27 20:24:11,594 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2024-11-27 20:24:11,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 852 events. 463/852 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3828 event pairs, 59 based on Foata normal form. 27/874 useless extension candidates. Maximal degree in co-relation 2727. Up to 154 conditions per place. [2024-11-27 20:24:11,604 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 25 changer transitions 30/103 dead transitions. [2024-11-27 20:24:11,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 764 flow [2024-11-27 20:24:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:24:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:24:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-11-27 20:24:11,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2024-11-27 20:24:11,606 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 300 flow. Second operand 11 states and 171 transitions. [2024-11-27 20:24:11,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 764 flow [2024-11-27 20:24:11,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 716 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-27 20:24:11,624 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 424 flow [2024-11-27 20:24:11,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-11-27 20:24:11,626 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-11-27 20:24:11,626 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 424 flow [2024-11-27 20:24:11,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:11,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:11,627 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:11,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:24:11,627 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:11,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash 97501963, now seen corresponding path program 1 times [2024-11-27 20:24:11,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:11,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516996133] [2024-11-27 20:24:11,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:11,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:11,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:11,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516996133] [2024-11-27 20:24:11,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516996133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:11,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67039275] [2024-11-27 20:24:11,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:11,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:11,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:11,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:11,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:24:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:11,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:24:11,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:12,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:12,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67039275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:12,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:12,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-27 20:24:12,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357352403] [2024-11-27 20:24:12,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:12,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:24:12,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:12,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:24:12,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:24:12,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:12,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 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) [2024-11-27 20:24:12,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:12,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:12,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:12,937 INFO L124 PetriNetUnfolderBase]: 589/1101 cut-off events. [2024-11-27 20:24:12,938 INFO L125 PetriNetUnfolderBase]: For 7230/7230 co-relation queries the response was YES. [2024-11-27 20:24:12,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4285 conditions, 1101 events. 589/1101 cut-off events. For 7230/7230 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4777 event pairs, 137 based on Foata normal form. 63/1160 useless extension candidates. Maximal degree in co-relation 4255. Up to 486 conditions per place. [2024-11-27 20:24:12,948 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 19 changer transitions 67/154 dead transitions. [2024-11-27 20:24:12,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 154 transitions, 1384 flow [2024-11-27 20:24:12,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:24:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-27 20:24:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-11-27 20:24:12,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2024-11-27 20:24:12,951 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 424 flow. Second operand 19 states and 288 transitions. [2024-11-27 20:24:12,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 154 transitions, 1384 flow [2024-11-27 20:24:12,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 154 transitions, 1305 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-11-27 20:24:12,972 INFO L231 Difference]: Finished difference. Result has 89 places, 54 transitions, 560 flow [2024-11-27 20:24:12,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=560, PETRI_PLACES=89, PETRI_TRANSITIONS=54} [2024-11-27 20:24:12,974 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-11-27 20:24:12,974 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 54 transitions, 560 flow [2024-11-27 20:24:12,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 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) [2024-11-27 20:24:12,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:12,975 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:12,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:24:13,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:13,175 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:13,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1100492635, now seen corresponding path program 2 times [2024-11-27 20:24:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:13,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577943332] [2024-11-27 20:24:13,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:13,198 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:24:13,199 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:13,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:13,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577943332] [2024-11-27 20:24:13,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577943332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:13,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:13,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:24:13,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962682378] [2024-11-27 20:24:13,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:13,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:24:13,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:13,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:24:13,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:24:13,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:13,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 54 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:13,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:13,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:13,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:13,981 INFO L124 PetriNetUnfolderBase]: 670/1277 cut-off events. [2024-11-27 20:24:13,981 INFO L125 PetriNetUnfolderBase]: For 19712/19712 co-relation queries the response was YES. [2024-11-27 20:24:13,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6235 conditions, 1277 events. 670/1277 cut-off events. For 19712/19712 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6169 event pairs, 132 based on Foata normal form. 27/1300 useless extension candidates. Maximal degree in co-relation 6194. Up to 483 conditions per place. [2024-11-27 20:24:13,996 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 76 selfloop transitions, 25 changer transitions 31/136 dead transitions. [2024-11-27 20:24:13,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 1552 flow [2024-11-27 20:24:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:24:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-27 20:24:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2024-11-27 20:24:13,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-27 20:24:13,998 INFO L175 Difference]: Start difference. First operand has 89 places, 54 transitions, 560 flow. Second operand 15 states and 232 transitions. [2024-11-27 20:24:13,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 136 transitions, 1552 flow [2024-11-27 20:24:14,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 136 transitions, 1251 flow, removed 138 selfloop flow, removed 12 redundant places. [2024-11-27 20:24:14,030 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 624 flow [2024-11-27 20:24:14,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=624, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2024-11-27 20:24:14,031 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-11-27 20:24:14,033 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 624 flow [2024-11-27 20:24:14,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:14,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:14,034 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:14,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:24:14,034 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:14,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:14,035 INFO L85 PathProgramCache]: Analyzing trace with hash -966709805, now seen corresponding path program 3 times [2024-11-27 20:24:14,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:14,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969916271] [2024-11-27 20:24:14,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:14,056 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:24:14,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:14,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969916271] [2024-11-27 20:24:14,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969916271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:14,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033389971] [2024-11-27 20:24:14,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:14,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:14,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:14,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:14,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:24:14,308 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:24:14,308 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:14,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:24:14,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:14,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:14,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033389971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:14,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:14,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-27 20:24:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444590775] [2024-11-27 20:24:14,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:14,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:24:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:14,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:24:14,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:24:14,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:14,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 624 flow. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:14,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:14,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:14,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:15,667 INFO L124 PetriNetUnfolderBase]: 973/1789 cut-off events. [2024-11-27 20:24:15,668 INFO L125 PetriNetUnfolderBase]: For 26627/26627 co-relation queries the response was YES. [2024-11-27 20:24:15,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8715 conditions, 1789 events. 973/1789 cut-off events. For 26627/26627 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9130 event pairs, 96 based on Foata normal form. 81/1866 useless extension candidates. Maximal degree in co-relation 8674. Up to 269 conditions per place. [2024-11-27 20:24:15,687 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 85 selfloop transitions, 54 changer transitions 81/224 dead transitions. [2024-11-27 20:24:15,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 224 transitions, 2567 flow [2024-11-27 20:24:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:24:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:24:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 388 transitions. [2024-11-27 20:24:15,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5351724137931034 [2024-11-27 20:24:15,690 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 624 flow. Second operand 25 states and 388 transitions. [2024-11-27 20:24:15,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 224 transitions, 2567 flow [2024-11-27 20:24:15,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 224 transitions, 2347 flow, removed 94 selfloop flow, removed 8 redundant places. [2024-11-27 20:24:15,750 INFO L231 Difference]: Finished difference. Result has 120 places, 81 transitions, 1072 flow [2024-11-27 20:24:15,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1072, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2024-11-27 20:24:15,751 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-11-27 20:24:15,752 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 1072 flow [2024-11-27 20:24:15,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:15,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:15,752 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:15,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:15,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:15,953 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:15,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash 285681605, now seen corresponding path program 1 times [2024-11-27 20:24:15,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:15,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630245098] [2024-11-27 20:24:15,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:15,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:24:16,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:16,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630245098] [2024-11-27 20:24:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630245098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:16,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978731908] [2024-11-27 20:24:16,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:16,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:16,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:16,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:24:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:16,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:24:16,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:24:16,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:24:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978731908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:16,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:16,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-27 20:24:16,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822319381] [2024-11-27 20:24:16,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:16,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:24:16,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:16,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:24:16,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:24:16,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:16,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 1072 flow. Second operand has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:16,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:16,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:16,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:17,871 INFO L124 PetriNetUnfolderBase]: 1369/2571 cut-off events. [2024-11-27 20:24:17,871 INFO L125 PetriNetUnfolderBase]: For 77683/77683 co-relation queries the response was YES. [2024-11-27 20:24:17,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15554 conditions, 2571 events. 1369/2571 cut-off events. For 77683/77683 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14483 event pairs, 70 based on Foata normal form. 72/2639 useless extension candidates. Maximal degree in co-relation 15501. Up to 458 conditions per place. [2024-11-27 20:24:17,900 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 92 selfloop transitions, 84 changer transitions 88/268 dead transitions. [2024-11-27 20:24:17,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 268 transitions, 4200 flow [2024-11-27 20:24:17,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 20:24:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-27 20:24:17,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2024-11-27 20:24:17,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2024-11-27 20:24:17,907 INFO L175 Difference]: Start difference. First operand has 120 places, 81 transitions, 1072 flow. Second operand 28 states and 425 transitions. [2024-11-27 20:24:17,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 268 transitions, 4200 flow [2024-11-27 20:24:18,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 268 transitions, 3452 flow, removed 348 selfloop flow, removed 17 redundant places. [2024-11-27 20:24:18,073 INFO L231 Difference]: Finished difference. Result has 141 places, 117 transitions, 1798 flow [2024-11-27 20:24:18,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1798, PETRI_PLACES=141, PETRI_TRANSITIONS=117} [2024-11-27 20:24:18,075 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-11-27 20:24:18,075 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 117 transitions, 1798 flow [2024-11-27 20:24:18,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:18,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:18,075 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:18,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:18,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:24:18,277 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:18,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -407138781, now seen corresponding path program 2 times [2024-11-27 20:24:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:18,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642386303] [2024-11-27 20:24:18,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:18,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:18,300 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:18,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642386303] [2024-11-27 20:24:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642386303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297907452] [2024-11-27 20:24:18,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:18,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:18,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:18,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:18,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:24:18,616 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:18,617 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:18,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:24:18,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:18,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:18,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297907452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:18,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-27 20:24:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975796392] [2024-11-27 20:24:18,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:18,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:24:18,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:18,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:24:18,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:24:19,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:19,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 117 transitions, 1798 flow. Second operand has 20 states, 20 states have (on average 10.05) internal successors, (201), 20 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:19,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:19,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:19,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:21,269 INFO L124 PetriNetUnfolderBase]: 1918/3588 cut-off events. [2024-11-27 20:24:21,270 INFO L125 PetriNetUnfolderBase]: For 195221/195221 co-relation queries the response was YES. [2024-11-27 20:24:21,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26037 conditions, 3588 events. 1918/3588 cut-off events. For 195221/195221 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 19502 event pairs, 46 based on Foata normal form. 99/3683 useless extension candidates. Maximal degree in co-relation 25974. Up to 698 conditions per place. [2024-11-27 20:24:21,324 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 132 selfloop transitions, 130 changer transitions 134/400 dead transitions. [2024-11-27 20:24:21,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 400 transitions, 7460 flow [2024-11-27 20:24:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-27 20:24:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-27 20:24:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 657 transitions. [2024-11-27 20:24:21,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5268644747393745 [2024-11-27 20:24:21,330 INFO L175 Difference]: Start difference. First operand has 141 places, 117 transitions, 1798 flow. Second operand 43 states and 657 transitions. [2024-11-27 20:24:21,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 400 transitions, 7460 flow [2024-11-27 20:24:21,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 400 transitions, 5730 flow, removed 828 selfloop flow, removed 16 redundant places. [2024-11-27 20:24:21,653 INFO L231 Difference]: Finished difference. Result has 189 places, 157 transitions, 2749 flow [2024-11-27 20:24:21,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=2749, PETRI_PLACES=189, PETRI_TRANSITIONS=157} [2024-11-27 20:24:21,654 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-11-27 20:24:21,655 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 157 transitions, 2749 flow [2024-11-27 20:24:21,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 20 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:21,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:21,656 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:21,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:21,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:21,863 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:21,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:21,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1993256447, now seen corresponding path program 3 times [2024-11-27 20:24:21,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012501615] [2024-11-27 20:24:21,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:21,893 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 20:24:21,895 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:22,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012501615] [2024-11-27 20:24:22,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012501615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289414478] [2024-11-27 20:24:22,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:22,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:22,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:22,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:22,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:24:22,403 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 20:24:22,403 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:22,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:24:22,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:22,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289414478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:22,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:22,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-11-27 20:24:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969485872] [2024-11-27 20:24:22,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:22,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:24:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:23,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:24:23,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:24:23,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:23,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 157 transitions, 2749 flow. Second operand has 35 states, 35 states have (on average 10.0) internal successors, (350), 35 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:23,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:23,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:23,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:26,559 INFO L124 PetriNetUnfolderBase]: 3007/5535 cut-off events. [2024-11-27 20:24:26,560 INFO L125 PetriNetUnfolderBase]: For 495540/495540 co-relation queries the response was YES. [2024-11-27 20:24:26,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47844 conditions, 5535 events. 3007/5535 cut-off events. For 495540/495540 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 28200 event pairs, 38 based on Foata normal form. 135/5666 useless extension candidates. Maximal degree in co-relation 47759. Up to 1109 conditions per place. [2024-11-27 20:24:26,640 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 217 selfloop transitions, 197 changer transitions 210/628 dead transitions. [2024-11-27 20:24:26,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 628 transitions, 13839 flow [2024-11-27 20:24:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-27 20:24:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-11-27 20:24:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 1083 transitions. [2024-11-27 20:24:26,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5259834871296746 [2024-11-27 20:24:26,645 INFO L175 Difference]: Start difference. First operand has 189 places, 157 transitions, 2749 flow. Second operand 71 states and 1083 transitions. [2024-11-27 20:24:26,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 628 transitions, 13839 flow [2024-11-27 20:24:27,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 628 transitions, 11051 flow, removed 1368 selfloop flow, removed 20 redundant places. [2024-11-27 20:24:27,323 INFO L231 Difference]: Finished difference. Result has 271 places, 226 transitions, 4567 flow [2024-11-27 20:24:27,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=4567, PETRI_PLACES=271, PETRI_TRANSITIONS=226} [2024-11-27 20:24:27,324 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-11-27 20:24:27,324 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 226 transitions, 4567 flow [2024-11-27 20:24:27,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.0) internal successors, (350), 35 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:27,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:27,325 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:27,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:24:27,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:24:27,525 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:27,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2135388818, now seen corresponding path program 4 times [2024-11-27 20:24:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:27,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918936724] [2024-11-27 20:24:27,527 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:27,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:27,575 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:27,578 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918936724] [2024-11-27 20:24:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918936724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713881252] [2024-11-27 20:24:28,937 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:24:28,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:28,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:28,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:28,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:24:29,028 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:24:29,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:29,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 20:24:29,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:29,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:30,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713881252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:30,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:30,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-11-27 20:24:30,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755130319] [2024-11-27 20:24:30,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:30,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 20:24:30,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:30,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 20:24:30,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=2419, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 20:24:30,787 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:30,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 226 transitions, 4567 flow. Second operand has 57 states, 57 states have (on average 10.087719298245615) internal successors, (575), 57 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:30,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:30,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:30,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:35,657 INFO L124 PetriNetUnfolderBase]: 3511/6698 cut-off events. [2024-11-27 20:24:35,657 INFO L125 PetriNetUnfolderBase]: For 1186750/1186750 co-relation queries the response was YES. [2024-11-27 20:24:35,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72445 conditions, 6698 events. 3511/6698 cut-off events. For 1186750/1186750 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 35240 event pairs, 1187 based on Foata normal form. 171/6865 useless extension candidates. Maximal degree in co-relation 72330. Up to 4260 conditions per place. [2024-11-27 20:24:35,738 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 339 selfloop transitions, 67 changer transitions 219/629 dead transitions. [2024-11-27 20:24:35,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 629 transitions, 18796 flow [2024-11-27 20:24:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-27 20:24:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2024-11-27 20:24:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 956 transitions. [2024-11-27 20:24:35,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5071618037135278 [2024-11-27 20:24:35,745 INFO L175 Difference]: Start difference. First operand has 271 places, 226 transitions, 4567 flow. Second operand 65 states and 956 transitions. [2024-11-27 20:24:35,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 629 transitions, 18796 flow [2024-11-27 20:24:38,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 629 transitions, 14860 flow, removed 1926 selfloop flow, removed 25 redundant places. [2024-11-27 20:24:38,549 INFO L231 Difference]: Finished difference. Result has 340 places, 274 transitions, 5310 flow [2024-11-27 20:24:38,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=5310, PETRI_PLACES=340, PETRI_TRANSITIONS=274} [2024-11-27 20:24:38,551 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-11-27 20:24:38,551 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 274 transitions, 5310 flow [2024-11-27 20:24:38,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 10.087719298245615) internal successors, (575), 57 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:38,552 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:38,553 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:38,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:38,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:24:38,757 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:38,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash 664699704, now seen corresponding path program 5 times [2024-11-27 20:24:38,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:38,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969061123] [2024-11-27 20:24:38,758 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:24:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:38,782 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 20:24:38,782 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:39,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:39,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969061123] [2024-11-27 20:24:39,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969061123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:39,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701562882] [2024-11-27 20:24:39,803 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:24:39,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:39,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:39,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:39,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:24:39,897 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 20:24:39,897 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:39,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 20:24:39,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:40,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:41,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701562882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:41,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:41,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-11-27 20:24:41,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850192401] [2024-11-27 20:24:41,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:41,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 20:24:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:41,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 20:24:41,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 20:24:41,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:41,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 274 transitions, 5310 flow. Second operand has 57 states, 57 states have (on average 10.087719298245615) internal successors, (575), 57 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:41,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:41,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:41,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:47,504 INFO L124 PetriNetUnfolderBase]: 4681/9370 cut-off events. [2024-11-27 20:24:47,504 INFO L125 PetriNetUnfolderBase]: For 2356711/2356711 co-relation queries the response was YES. [2024-11-27 20:24:47,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111946 conditions, 9370 events. 4681/9370 cut-off events. For 2356711/2356711 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 55587 event pairs, 832 based on Foata normal form. 171/9537 useless extension candidates. Maximal degree in co-relation 111800. Up to 3235 conditions per place. [2024-11-27 20:24:47,662 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 345 selfloop transitions, 245 changer transitions 251/845 dead transitions. [2024-11-27 20:24:47,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 845 transitions, 24912 flow [2024-11-27 20:24:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-27 20:24:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2024-11-27 20:24:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 1189 transitions. [2024-11-27 20:24:47,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-11-27 20:24:47,666 INFO L175 Difference]: Start difference. First operand has 340 places, 274 transitions, 5310 flow. Second operand 81 states and 1189 transitions. [2024-11-27 20:24:47,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 845 transitions, 24912 flow [2024-11-27 20:24:53,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 845 transitions, 21440 flow, removed 1720 selfloop flow, removed 29 redundant places. [2024-11-27 20:24:53,287 INFO L231 Difference]: Finished difference. Result has 417 places, 404 transitions, 8386 flow [2024-11-27 20:24:53,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=8386, PETRI_PLACES=417, PETRI_TRANSITIONS=404} [2024-11-27 20:24:53,288 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-11-27 20:24:53,289 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 404 transitions, 8386 flow [2024-11-27 20:24:53,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 10.087719298245615) internal successors, (575), 57 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:53,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:53,289 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:53,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:24:53,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:24:53,490 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:24:53,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash -191621164, now seen corresponding path program 6 times [2024-11-27 20:24:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:53,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700568731] [2024-11-27 20:24:53,491 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:53,525 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-27 20:24:53,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:54,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700568731] [2024-11-27 20:24:54,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700568731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130353148] [2024-11-27 20:24:54,545 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:24:54,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:54,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:54,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:54,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:24:54,647 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-27 20:24:54,647 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:54,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 20:24:54,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 2 proven. 239 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:54,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:56,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130353148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:56,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 57 [2024-11-27 20:24:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066936143] [2024-11-27 20:24:56,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:56,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-27 20:24:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:56,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-27 20:24:56,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=2704, Unknown=0, NotChecked=0, Total=3306 [2024-11-27 20:24:56,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:24:56,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 404 transitions, 8386 flow. Second operand has 58 states, 58 states have (on average 10.10344827586207) internal successors, (586), 58 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:56,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:56,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:24:56,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:04,675 INFO L124 PetriNetUnfolderBase]: 5995/12409 cut-off events. [2024-11-27 20:25:04,675 INFO L125 PetriNetUnfolderBase]: For 4283060/4283060 co-relation queries the response was YES. [2024-11-27 20:25:04,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166701 conditions, 12409 events. 5995/12409 cut-off events. For 4283060/4283060 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 81178 event pairs, 430 based on Foata normal form. 171/12576 useless extension candidates. Maximal degree in co-relation 166528. Up to 3065 conditions per place. [2024-11-27 20:25:04,965 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 305 selfloop transitions, 465 changer transitions 267/1041 dead transitions. [2024-11-27 20:25:04,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1041 transitions, 33518 flow [2024-11-27 20:25:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-27 20:25:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2024-11-27 20:25:04,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 1315 transitions. [2024-11-27 20:25:04,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5094924447888415 [2024-11-27 20:25:04,969 INFO L175 Difference]: Start difference. First operand has 417 places, 404 transitions, 8386 flow. Second operand 89 states and 1315 transitions. [2024-11-27 20:25:04,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 1041 transitions, 33518 flow [2024-11-27 20:25:20,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1041 transitions, 28842 flow, removed 2311 selfloop flow, removed 30 redundant places. [2024-11-27 20:25:20,465 INFO L231 Difference]: Finished difference. Result has 497 places, 553 transitions, 12405 flow [2024-11-27 20:25:20,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6552, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=12405, PETRI_PLACES=497, PETRI_TRANSITIONS=553} [2024-11-27 20:25:20,467 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 467 predicate places. [2024-11-27 20:25:20,467 INFO L471 AbstractCegarLoop]: Abstraction has has 497 places, 553 transitions, 12405 flow [2024-11-27 20:25:20,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 10.10344827586207) internal successors, (586), 58 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:20,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:20,467 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:20,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 20:25:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:25:20,668 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:25:20,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1636511522, now seen corresponding path program 7 times [2024-11-27 20:25:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329889974] [2024-11-27 20:25:20,670 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:25:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:25:21,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329889974] [2024-11-27 20:25:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329889974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618818115] [2024-11-27 20:25:21,460 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:25:21,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:21,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:21,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:21,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:25:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:21,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 20:25:21,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:25:21,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:25:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618818115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:22,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:22,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-11-27 20:25:22,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270468653] [2024-11-27 20:25:22,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:22,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 20:25:22,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:22,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 20:25:22,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=2669, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 20:25:22,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:25:22,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 553 transitions, 12405 flow. Second operand has 57 states, 57 states have (on average 10.087719298245615) internal successors, (575), 57 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:22,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:22,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:25:22,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:34,956 INFO L124 PetriNetUnfolderBase]: 8731/17731 cut-off events. [2024-11-27 20:25:34,956 INFO L125 PetriNetUnfolderBase]: For 8183003/8183003 co-relation queries the response was YES. [2024-11-27 20:25:35,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266499 conditions, 17731 events. 8731/17731 cut-off events. For 8183003/8183003 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 121804 event pairs, 182 based on Foata normal form. 171/17898 useless extension candidates. Maximal degree in co-relation 266304. Up to 4367 conditions per place. [2024-11-27 20:25:35,457 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 361 selfloop transitions, 701 changer transitions 259/1325 dead transitions. [2024-11-27 20:25:35,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1325 transitions, 45613 flow [2024-11-27 20:25:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-27 20:25:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2024-11-27 20:25:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 1525 transitions. [2024-11-27 20:25:35,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5206555138272448 [2024-11-27 20:25:35,464 INFO L175 Difference]: Start difference. First operand has 497 places, 553 transitions, 12405 flow. Second operand 101 states and 1525 transitions. [2024-11-27 20:25:35,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1325 transitions, 45613 flow [2024-11-27 20:25:58,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 1325 transitions, 35599 flow, removed 4953 selfloop flow, removed 31 redundant places. [2024-11-27 20:25:58,214 INFO L231 Difference]: Finished difference. Result has 593 places, 751 transitions, 17129 flow [2024-11-27 20:25:58,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9761, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=17129, PETRI_PLACES=593, PETRI_TRANSITIONS=751} [2024-11-27 20:25:58,215 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 563 predicate places. [2024-11-27 20:25:58,215 INFO L471 AbstractCegarLoop]: Abstraction has has 593 places, 751 transitions, 17129 flow [2024-11-27 20:25:58,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 10.087719298245615) internal successors, (575), 57 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:58,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:58,216 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:58,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:25:58,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:25:58,417 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:25:58,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash 229595600, now seen corresponding path program 8 times [2024-11-27 20:25:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042074739] [2024-11-27 20:25:58,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:58,434 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:25:58,434 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:25:59,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:59,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042074739] [2024-11-27 20:25:59,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042074739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:59,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986793227] [2024-11-27 20:25:59,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:59,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:59,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:59,043 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:59,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:25:59,120 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:25:59,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:59,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 20:25:59,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:25:59,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:25:59,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986793227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:59,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:59,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-11-27 20:25:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861067496] [2024-11-27 20:25:59,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:59,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 20:25:59,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:59,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 20:25:59,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=2452, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 20:26:00,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:26:00,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 751 transitions, 17129 flow. Second operand has 57 states, 57 states have (on average 10.105263157894736) internal successors, (576), 57 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:00,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:26:00,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:26:00,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:26:14,987 INFO L124 PetriNetUnfolderBase]: 9586/19393 cut-off events. [2024-11-27 20:26:14,987 INFO L125 PetriNetUnfolderBase]: For 9661436/9661436 co-relation queries the response was YES. [2024-11-27 20:26:15,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299978 conditions, 19393 events. 9586/19393 cut-off events. For 9661436/9661436 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 134222 event pairs, 60 based on Foata normal form. 306/19695 useless extension candidates. Maximal degree in co-relation 299755. Up to 4763 conditions per place. [2024-11-27 20:26:15,526 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 338 selfloop transitions, 798 changer transitions 324/1464 dead transitions. [2024-11-27 20:26:15,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 1464 transitions, 54889 flow [2024-11-27 20:26:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-27 20:26:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2024-11-27 20:26:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 1641 transitions. [2024-11-27 20:26:15,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5239463601532567 [2024-11-27 20:26:15,534 INFO L175 Difference]: Start difference. First operand has 593 places, 751 transitions, 17129 flow. Second operand 108 states and 1641 transitions. [2024-11-27 20:26:15,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 1464 transitions, 54889 flow [2024-11-27 20:26:48,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 1464 transitions, 45238 flow, removed 4645 selfloop flow, removed 45 redundant places. [2024-11-27 20:26:48,297 INFO L231 Difference]: Finished difference. Result has 691 places, 836 transitions, 21750 flow [2024-11-27 20:26:48,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=13814, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=714, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=21750, PETRI_PLACES=691, PETRI_TRANSITIONS=836} [2024-11-27 20:26:48,298 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 661 predicate places. [2024-11-27 20:26:48,298 INFO L471 AbstractCegarLoop]: Abstraction has has 691 places, 836 transitions, 21750 flow [2024-11-27 20:26:48,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 10.105263157894736) internal successors, (576), 57 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:48,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:26:48,299 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:48,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:26:48,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:26:48,499 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:26:48,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash -777570172, now seen corresponding path program 9 times [2024-11-27 20:26:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:48,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073863707] [2024-11-27 20:26:48,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:26:48,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:48,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-27 20:26:48,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 1096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:49,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073863707] [2024-11-27 20:26:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073863707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364091157] [2024-11-27 20:26:49,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:26:49,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:49,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:49,625 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:49,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:26:49,719 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-27 20:26:49,719 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:26:49,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-27 20:26:49,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 1096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:49,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 1096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364091157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:50,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:50,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-11-27 20:26:50,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392895113] [2024-11-27 20:26:50,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:50,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-27 20:26:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:50,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-27 20:26:50,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=1703, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 20:26:50,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:26:50,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 836 transitions, 21750 flow. Second operand has 47 states, 47 states have (on average 9.936170212765957) internal successors, (467), 47 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:50,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:26:50,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:26:50,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:27:08,757 INFO L124 PetriNetUnfolderBase]: 10153/20598 cut-off events. [2024-11-27 20:27:08,757 INFO L125 PetriNetUnfolderBase]: For 13076078/13076078 co-relation queries the response was YES. [2024-11-27 20:27:09,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339705 conditions, 20598 events. 10153/20598 cut-off events. For 13076078/13076078 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 142984 event pairs, 146 based on Foata normal form. 18/20612 useless extension candidates. Maximal degree in co-relation 339445. Up to 5039 conditions per place. [2024-11-27 20:27:09,262 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 347 selfloop transitions, 857 changer transitions 171/1379 dead transitions. [2024-11-27 20:27:09,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 1379 transitions, 47266 flow [2024-11-27 20:27:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-27 20:27:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-27 20:27:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 1265 transitions. [2024-11-27 20:27:09,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5192939244663383 [2024-11-27 20:27:09,265 INFO L175 Difference]: Start difference. First operand has 691 places, 836 transitions, 21750 flow. Second operand 84 states and 1265 transitions. [2024-11-27 20:27:09,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 1379 transitions, 47266 flow [2024-11-27 20:28:17,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 1379 transitions, 36093 flow, removed 5095 selfloop flow, removed 70 redundant places. [2024-11-27 20:28:17,724 INFO L231 Difference]: Finished difference. Result has 694 places, 921 transitions, 19618 flow [2024-11-27 20:28:17,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=15913, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=772, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=19618, PETRI_PLACES=694, PETRI_TRANSITIONS=921} [2024-11-27 20:28:17,725 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 664 predicate places. [2024-11-27 20:28:17,725 INFO L471 AbstractCegarLoop]: Abstraction has has 694 places, 921 transitions, 19618 flow [2024-11-27 20:28:17,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 9.936170212765957) internal successors, (467), 47 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:17,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:17,726 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:17,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:28:17,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:28:17,927 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:17,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1483499632, now seen corresponding path program 10 times [2024-11-27 20:28:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649745514] [2024-11-27 20:28:17,929 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:28:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:17,959 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:28:17,959 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 20:28:17,959 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:28:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:28:18,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:28:18,061 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:28:18,063 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-27 20:28:18,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-27 20:28:18,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-27 20:28:18,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-27 20:28:18,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:28:18,067 INFO L422 BasicCegarLoop]: Path program histogram: [10, 3, 2, 2, 1, 1] [2024-11-27 20:28:18,306 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 20:28:18,306 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:28:18,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:28:18 BasicIcfg [2024-11-27 20:28:18,326 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:28:18,327 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:28:18,327 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:28:18,327 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:28:18,332 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:07" (3/4) ... [2024-11-27 20:28:18,336 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 20:28:18,340 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:28:18,341 INFO L158 Benchmark]: Toolchain (without parser) took 251941.24ms. Allocated memory was 142.6MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 116.2MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-27 20:28:18,342 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 73.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:28:18,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.04ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 96.7MB in the end (delta: 19.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:28:18,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.12ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 95.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:28:18,344 INFO L158 Benchmark]: Boogie Preprocessor took 58.24ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:28:18,344 INFO L158 Benchmark]: RCFGBuilder took 517.83ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 76.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:28:18,347 INFO L158 Benchmark]: TraceAbstraction took 250758.23ms. Allocated memory was 142.6MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 75.6MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-27 20:28:18,347 INFO L158 Benchmark]: Witness Printer took 13.65ms. Allocated memory is still 4.3GB. Free memory was 2.9GB in the beginning and 2.9GB in the end (delta: 427.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:28:18,349 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 73.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.04ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 96.7MB in the end (delta: 19.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.12ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 95.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.24ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 93.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 517.83ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 76.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 250758.23ms. Allocated memory was 142.6MB in the beginning and 4.3GB in the end (delta: 4.1GB). Free memory was 75.6MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 13.65ms. Allocated memory is still 4.3GB. Free memory was 2.9GB in the beginning and 2.9GB in the end (delta: 427.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, argc=49, i=3, id1=-1, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, argc=49, i=3, id1=-1, id2=0, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=11] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=12] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=13] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=14] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=14] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, i=43, id1=-1, id2=0, j=44, k=19, k=19] [L704] COND TRUE 2 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L719] 0 int condJ = j >= (2*20 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, condJ=1, i=45, id1=-1, id2=0, j=46, k=19, k=19] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L693] 0 __assert_fail ("0", "triangular-longest-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 250.4s, OverallIterations: 19, TraceHistogramMax: 20, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 228.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11290 SdHoareTripleChecker+Valid, 10.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11263 mSDsluCounter, 119 SdHoareTripleChecker+Invalid, 8.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 613 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10062 IncrementalHoareTripleChecker+Invalid, 10675 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 613 mSolverCounterUnsat, 8 mSDtfsCounter, 10062 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2346 GetRequests, 1188 SyntacticMatches, 38 SemanticMatches, 1120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40695 ImplicationChecksByTransitivity, 24.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21750occurred in iteration=17, InterpolantAutomatonStates: 775, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 1641 NumberOfCodeBlocks, 1641 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 2178 ConstructedInterpolants, 0 QuantifiedInterpolants, 9938 SizeOfPredicates, 204 NumberOfNonLiveVariables, 1831 ConjunctsInSsa, 264 ConjunctsInUnsatCore, 40 InterpolantComputations, 7 PerfectInterpolantSequences, 30/8109 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 20:28:18,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/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_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:28:21,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:28:21,307 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-27 20:28:21,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:28:21,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:28:21,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:28:21,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:28:21,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:28:21,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:28:21,383 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:28:21,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:28:21,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:28:21,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:28:21,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:28:21,384 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:28:21,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:28:21,384 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:28:21,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:28:21,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:28:21,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:28:21,384 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:28:21,385 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:28:21,385 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:28:21,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:28:21,385 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:28:21,385 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 20:28:21,385 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 20:28:21,389 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:28:21,390 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:28:21,390 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:28:21,390 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:28:21,390 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:28:21,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:28:21,390 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:28:21,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:28:21,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:28:21,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:28:21,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:28:21,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:28:21,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:28:21,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:28:21,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:28:21,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:28:21,392 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 20:28:21,392 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 20:28:21,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:28:21,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:28:21,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:28:21,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:28:21,392 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_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/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 -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2024-11-27 20:28:21,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:28:21,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:28:21,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:28:21,710 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:28:21,710 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:28:21,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2024-11-27 20:28:24,653 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data/540c80b4c/ed561b3c787f4c9da9079f676601329a/FLAGa295a96a7 [2024-11-27 20:28:25,022 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:28:25,022 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/sv-benchmarks/c/pthread/triangular-longest-2.i [2024-11-27 20:28:25,037 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data/540c80b4c/ed561b3c787f4c9da9079f676601329a/FLAGa295a96a7 [2024-11-27 20:28:25,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/data/540c80b4c/ed561b3c787f4c9da9079f676601329a [2024-11-27 20:28:25,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:28:25,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:28:25,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:28:25,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:28:25,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:28:25,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8b5162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25, skipping insertion in model container [2024-11-27 20:28:25,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:28:25,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:28:25,545 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:28:25,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:28:25,664 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:28:25,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25 WrapperNode [2024-11-27 20:28:25,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:28:25,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:28:25,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:28:25,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:28:25,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,720 INFO L138 Inliner]: procedures = 169, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2024-11-27 20:28:25,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:28:25,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:28:25,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:28:25,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:28:25,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,733 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,751 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]. [2024-11-27 20:28:25,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,766 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:28:25,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:28:25,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:28:25,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:28:25,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (1/1) ... [2024-11-27 20:28:25,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:28:25,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:25,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:28:25,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:28:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-27 20:28:25,867 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-27 20:28:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-27 20:28:25,867 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-27 20:28:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:28:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:28:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 20:28:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:28:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:28:25,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:28:25,868 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:28:26,042 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:28:26,044 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:28:26,209 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:28:26,210 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:28:26,379 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:28:26,379 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:28:26,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:28:26 BoogieIcfgContainer [2024-11-27 20:28:26,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:28:26,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:28:26,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:28:26,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:28:26,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:28:25" (1/3) ... [2024-11-27 20:28:26,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1211dc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:28:26, skipping insertion in model container [2024-11-27 20:28:26,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:25" (2/3) ... [2024-11-27 20:28:26,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1211dc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:28:26, skipping insertion in model container [2024-11-27 20:28:26,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:28:26" (3/3) ... [2024-11-27 20:28:26,393 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2024-11-27 20:28:26,409 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:28:26,411 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 20:28:26,411 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:28:26,489 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:28:26,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-27 20:28:26,565 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-27 20:28:26,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:28:26,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-27 20:28:26,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-27 20:28:26,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-27 20:28:26,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:28:26,593 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;@c1a918b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:28:26,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 20:28:26,607 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:28:26,607 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-27 20:28:26,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:28:26,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:26,608 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:26,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:26,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash 607280493, now seen corresponding path program 1 times [2024-11-27 20:28:26,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:26,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122612524] [2024-11-27 20:28:26,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:26,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:26,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:26,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:26,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:28:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:26,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:28:26,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:26,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:26,814 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122612524] [2024-11-27 20:28:26,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122612524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:26,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:26,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:28:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033929542] [2024-11-27 20:28:26,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:26,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:28:26,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:26,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:28:26,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:28:26,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-27 20:28:26,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:26,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:26,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-27 20:28:26,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:26,963 INFO L124 PetriNetUnfolderBase]: 70/159 cut-off events. [2024-11-27 20:28:26,963 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:28:26,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 159 events. 70/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 568 event pairs, 44 based on Foata normal form. 15/162 useless extension candidates. Maximal degree in co-relation 274. Up to 113 conditions per place. [2024-11-27 20:28:26,966 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-11-27 20:28:26,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-11-27 20:28:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:28:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:28:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-27 20:28:26,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-27 20:28:26,981 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-27 20:28:26,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-11-27 20:28:26,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:28:26,987 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-11-27 20:28:26,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-11-27 20:28:26,993 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-27 20:28:26,994 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-11-27 20:28:26,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:26,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:26,994 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:27,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:28:27,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:27,197 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:27,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash 607281656, now seen corresponding path program 1 times [2024-11-27 20:28:27,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:27,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043757461] [2024-11-27 20:28:27,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:27,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:27,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:27,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:27,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:28:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:27,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:28:27,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:27,445 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:27,445 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:27,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043757461] [2024-11-27 20:28:27,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043757461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:27,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:27,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:28:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144755534] [2024-11-27 20:28:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:27,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:28:27,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:27,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:28:27,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:28:27,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:27,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-11-27 20:28:27,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:27,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:27,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:27,892 INFO L124 PetriNetUnfolderBase]: 328/594 cut-off events. [2024-11-27 20:28:27,892 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:28:27,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 594 events. 328/594 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2617 event pairs, 45 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 1121. Up to 243 conditions per place. [2024-11-27 20:28:27,896 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2024-11-27 20:28:27,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2024-11-27 20:28:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:28:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:28:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-11-27 20:28:27,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2024-11-27 20:28:27,899 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2024-11-27 20:28:27,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2024-11-27 20:28:27,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:28:27,902 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2024-11-27 20:28:27,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2024-11-27 20:28:27,903 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-11-27 20:28:27,903 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2024-11-27 20:28:27,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-11-27 20:28:27,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:27,904 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:27,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:28:28,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:28,105 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:28,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1665139995, now seen corresponding path program 1 times [2024-11-27 20:28:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:28,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164677365] [2024-11-27 20:28:28,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:28,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:28,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:28,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:28,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:28:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:28,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:28:28,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:28,282 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:28,283 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:28,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164677365] [2024-11-27 20:28:28,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164677365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:28,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:28,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:28:28,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985734209] [2024-11-27 20:28:28,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:28,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:28:28,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:28,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:28:28,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:28:28,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:28,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:28,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:28,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:28,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:28,578 INFO L124 PetriNetUnfolderBase]: 247/455 cut-off events. [2024-11-27 20:28:28,579 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-11-27 20:28:28,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 455 events. 247/455 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1824 event pairs, 50 based on Foata normal form. 18/469 useless extension candidates. Maximal degree in co-relation 1171. Up to 190 conditions per place. [2024-11-27 20:28:28,585 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 9 changer transitions 16/59 dead transitions. [2024-11-27 20:28:28,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 316 flow [2024-11-27 20:28:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:28:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:28:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-11-27 20:28:28,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.541871921182266 [2024-11-27 20:28:28,592 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 7 states and 110 transitions. [2024-11-27 20:28:28,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 316 flow [2024-11-27 20:28:28,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-27 20:28:28,598 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 143 flow [2024-11-27 20:28:28,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2024-11-27 20:28:28,598 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-11-27 20:28:28,599 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 143 flow [2024-11-27 20:28:28,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:28,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:28,599 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:28,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:28,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:28,800 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:28,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:28,801 INFO L85 PathProgramCache]: Analyzing trace with hash 303923476, now seen corresponding path program 1 times [2024-11-27 20:28:28,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:28,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103518455] [2024-11-27 20:28:28,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:28,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:28,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:28,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:28,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:28:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:28,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:28:28,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:28,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:28,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103518455] [2024-11-27 20:28:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103518455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:28,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:28,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:28:28,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782624265] [2024-11-27 20:28:28,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:28,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:28:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:28,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:28:28,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:28:28,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:28,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:29,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:29,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:29,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:29,359 INFO L124 PetriNetUnfolderBase]: 391/726 cut-off events. [2024-11-27 20:28:29,359 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2024-11-27 20:28:29,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 726 events. 391/726 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3215 event pairs, 95 based on Foata normal form. 27/749 useless extension candidates. Maximal degree in co-relation 2099. Up to 264 conditions per place. [2024-11-27 20:28:29,367 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2024-11-27 20:28:29,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 517 flow [2024-11-27 20:28:29,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:28:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:28:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-27 20:28:29,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-27 20:28:29,372 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 143 flow. Second operand 9 states and 144 transitions. [2024-11-27 20:28:29,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 517 flow [2024-11-27 20:28:29,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 478 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-27 20:28:29,386 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 236 flow [2024-11-27 20:28:29,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2024-11-27 20:28:29,388 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-11-27 20:28:29,389 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 236 flow [2024-11-27 20:28:29,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:29,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:29,389 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:29,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:28:29,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:29,594 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:29,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash 186911764, now seen corresponding path program 2 times [2024-11-27 20:28:29,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:29,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490131476] [2024-11-27 20:28:29,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:28:29,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:29,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:29,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:28:29,666 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:28:29,666 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:29,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:28:29,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:29,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:29,769 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490131476] [2024-11-27 20:28:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490131476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:29,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:29,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:28:29,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15162408] [2024-11-27 20:28:29,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:29,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:28:29,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:29,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:28:29,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:28:29,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:29,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:29,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:29,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:29,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:30,122 INFO L124 PetriNetUnfolderBase]: 346/656 cut-off events. [2024-11-27 20:28:30,123 INFO L125 PetriNetUnfolderBase]: For 2058/2058 co-relation queries the response was YES. [2024-11-27 20:28:30,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2190 conditions, 656 events. 346/656 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2889 event pairs, 88 based on Foata normal form. 45/697 useless extension candidates. Maximal degree in co-relation 2167. Up to 273 conditions per place. [2024-11-27 20:28:30,129 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 12 changer transitions 30/86 dead transitions. [2024-11-27 20:28:30,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 655 flow [2024-11-27 20:28:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:28:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:28:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-27 20:28:30,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-27 20:28:30,134 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 236 flow. Second operand 9 states and 140 transitions. [2024-11-27 20:28:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 655 flow [2024-11-27 20:28:30,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 595 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-27 20:28:30,149 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 278 flow [2024-11-27 20:28:30,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2024-11-27 20:28:30,150 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-11-27 20:28:30,152 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 278 flow [2024-11-27 20:28:30,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:30,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:30,152 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:30,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:28:30,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:30,353 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:30,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1603817983, now seen corresponding path program 1 times [2024-11-27 20:28:30,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:30,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412593434] [2024-11-27 20:28:30,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:30,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:30,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:30,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:30,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:28:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:30,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:28:30,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:30,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:30,537 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:30,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412593434] [2024-11-27 20:28:30,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412593434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:30,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:30,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:28:30,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309790852] [2024-11-27 20:28:30,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:30,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:28:30,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:30,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:28:30,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:28:30,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:30,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:30,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:30,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:30,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:30,954 INFO L124 PetriNetUnfolderBase]: 427/807 cut-off events. [2024-11-27 20:28:30,954 INFO L125 PetriNetUnfolderBase]: For 3492/3492 co-relation queries the response was YES. [2024-11-27 20:28:30,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2903 conditions, 807 events. 427/807 cut-off events. For 3492/3492 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3717 event pairs, 122 based on Foata normal form. 27/830 useless extension candidates. Maximal degree in co-relation 2875. Up to 316 conditions per place. [2024-11-27 20:28:30,962 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 51 selfloop transitions, 12 changer transitions 26/93 dead transitions. [2024-11-27 20:28:30,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 752 flow [2024-11-27 20:28:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:28:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:28:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-11-27 20:28:30,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2024-11-27 20:28:30,964 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 278 flow. Second operand 10 states and 158 transitions. [2024-11-27 20:28:30,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 752 flow [2024-11-27 20:28:30,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 93 transitions, 718 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-27 20:28:30,978 INFO L231 Difference]: Finished difference. Result has 68 places, 43 transitions, 345 flow [2024-11-27 20:28:30,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=43} [2024-11-27 20:28:30,979 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-11-27 20:28:30,979 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 43 transitions, 345 flow [2024-11-27 20:28:30,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:30,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:30,980 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:30,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:28:31,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:31,181 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:31,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash -27840957, now seen corresponding path program 2 times [2024-11-27 20:28:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:31,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957548402] [2024-11-27 20:28:31,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:28:31,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:31,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:31,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:31,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:28:31,246 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:28:31,246 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:31,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:28:31,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:31,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:31,379 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957548402] [2024-11-27 20:28:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957548402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:31,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:31,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:28:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812358218] [2024-11-27 20:28:31,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:31,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:28:31,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:31,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:28:31,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:28:31,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:31,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 43 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:31,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:31,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:31,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:31,821 INFO L124 PetriNetUnfolderBase]: 463/892 cut-off events. [2024-11-27 20:28:31,821 INFO L125 PetriNetUnfolderBase]: For 6473/6473 co-relation queries the response was YES. [2024-11-27 20:28:31,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3610 conditions, 892 events. 463/892 cut-off events. For 6473/6473 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4336 event pairs, 120 based on Foata normal form. 27/915 useless extension candidates. Maximal degree in co-relation 3578. Up to 340 conditions per place. [2024-11-27 20:28:31,828 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 56 selfloop transitions, 17 changer transitions 30/107 dead transitions. [2024-11-27 20:28:31,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 978 flow [2024-11-27 20:28:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:28:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:28:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-11-27 20:28:31,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-27 20:28:31,834 INFO L175 Difference]: Start difference. First operand has 68 places, 43 transitions, 345 flow. Second operand 12 states and 186 transitions. [2024-11-27 20:28:31,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 978 flow [2024-11-27 20:28:31,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 842 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-11-27 20:28:31,850 INFO L231 Difference]: Finished difference. Result has 75 places, 48 transitions, 395 flow [2024-11-27 20:28:31,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=75, PETRI_TRANSITIONS=48} [2024-11-27 20:28:31,852 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-11-27 20:28:31,853 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 48 transitions, 395 flow [2024-11-27 20:28:31,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:31,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:31,853 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:31,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:32,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:32,054 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:32,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:32,055 INFO L85 PathProgramCache]: Analyzing trace with hash -978908089, now seen corresponding path program 3 times [2024-11-27 20:28:32,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:32,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890515761] [2024-11-27 20:28:32,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:28:32,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:32,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:32,057 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:32,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:28:32,115 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:28:32,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:32,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:28:32,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:32,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:32,258 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:32,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890515761] [2024-11-27 20:28:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890515761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:32,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:32,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:28:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582616381] [2024-11-27 20:28:32,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:32,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:28:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:32,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:28:32,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:28:32,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:32,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 48 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:32,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:32,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:32,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:32,663 INFO L124 PetriNetUnfolderBase]: 436/840 cut-off events. [2024-11-27 20:28:32,664 INFO L125 PetriNetUnfolderBase]: For 6137/6137 co-relation queries the response was YES. [2024-11-27 20:28:32,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3330 conditions, 840 events. 436/840 cut-off events. For 6137/6137 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4058 event pairs, 152 based on Foata normal form. 27/863 useless extension candidates. Maximal degree in co-relation 3296. Up to 555 conditions per place. [2024-11-27 20:28:32,670 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 9 changer transitions 29/96 dead transitions. [2024-11-27 20:28:32,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 875 flow [2024-11-27 20:28:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:28:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:28:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-27 20:28:32,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5275862068965518 [2024-11-27 20:28:32,672 INFO L175 Difference]: Start difference. First operand has 75 places, 48 transitions, 395 flow. Second operand 10 states and 153 transitions. [2024-11-27 20:28:32,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 875 flow [2024-11-27 20:28:32,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 804 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-11-27 20:28:32,688 INFO L231 Difference]: Finished difference. Result has 79 places, 50 transitions, 405 flow [2024-11-27 20:28:32,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=405, PETRI_PLACES=79, PETRI_TRANSITIONS=50} [2024-11-27 20:28:32,689 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-11-27 20:28:32,689 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 50 transitions, 405 flow [2024-11-27 20:28:32,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:32,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:32,689 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:32,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:28:32,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:32,890 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:32,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash 994900479, now seen corresponding path program 4 times [2024-11-27 20:28:32,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:32,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259150310] [2024-11-27 20:28:32,891 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:28:32,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:32,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:32,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:32,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:28:32,952 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:28:32,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:32,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:28:32,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:33,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:33,038 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:33,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259150310] [2024-11-27 20:28:33,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259150310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:33,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:33,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:28:33,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215858078] [2024-11-27 20:28:33,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:33,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:28:33,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:33,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:28:33,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:28:33,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:33,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 50 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:33,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:33,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:33,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:33,432 INFO L124 PetriNetUnfolderBase]: 463/888 cut-off events. [2024-11-27 20:28:33,432 INFO L125 PetriNetUnfolderBase]: For 6613/6613 co-relation queries the response was YES. [2024-11-27 20:28:33,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3509 conditions, 888 events. 463/888 cut-off events. For 6613/6613 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4343 event pairs, 152 based on Foata normal form. 18/902 useless extension candidates. Maximal degree in co-relation 3473. Up to 456 conditions per place. [2024-11-27 20:28:33,438 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 16 changer transitions 21/95 dead transitions. [2024-11-27 20:28:33,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 883 flow [2024-11-27 20:28:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:28:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:28:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-27 20:28:33,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-11-27 20:28:33,440 INFO L175 Difference]: Start difference. First operand has 79 places, 50 transitions, 405 flow. Second operand 9 states and 140 transitions. [2024-11-27 20:28:33,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 883 flow [2024-11-27 20:28:33,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 827 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-27 20:28:33,459 INFO L231 Difference]: Finished difference. Result has 81 places, 53 transitions, 468 flow [2024-11-27 20:28:33,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2024-11-27 20:28:33,461 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-11-27 20:28:33,463 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 468 flow [2024-11-27 20:28:33,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:33,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:33,463 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:33,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:28:33,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:33,664 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:33,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1916831880, now seen corresponding path program 1 times [2024-11-27 20:28:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:33,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884960637] [2024-11-27 20:28:33,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:33,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:33,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:33,667 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:33,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:28:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:33,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:28:33,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:33,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:34,075 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884960637] [2024-11-27 20:28:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884960637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:34,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:28:34,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-27 20:28:34,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934955718] [2024-11-27 20:28:34,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:34,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:28:34,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:34,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:28:34,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:28:34,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:34,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:34,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:34,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:34,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:35,236 INFO L124 PetriNetUnfolderBase]: 697/1285 cut-off events. [2024-11-27 20:28:35,237 INFO L125 PetriNetUnfolderBase]: For 14498/14498 co-relation queries the response was YES. [2024-11-27 20:28:35,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5776 conditions, 1285 events. 697/1285 cut-off events. For 14498/14498 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6061 event pairs, 36 based on Foata normal form. 45/1326 useless extension candidates. Maximal degree in co-relation 5739. Up to 191 conditions per place. [2024-11-27 20:28:35,246 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 69 selfloop transitions, 43 changer transitions 60/176 dead transitions. [2024-11-27 20:28:35,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 176 transitions, 1752 flow [2024-11-27 20:28:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:28:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-27 20:28:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 323 transitions. [2024-11-27 20:28:35,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303776683087028 [2024-11-27 20:28:35,249 INFO L175 Difference]: Start difference. First operand has 81 places, 53 transitions, 468 flow. Second operand 21 states and 323 transitions. [2024-11-27 20:28:35,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 176 transitions, 1752 flow [2024-11-27 20:28:35,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 176 transitions, 1659 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-11-27 20:28:35,277 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 885 flow [2024-11-27 20:28:35,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=885, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2024-11-27 20:28:35,278 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-11-27 20:28:35,278 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 885 flow [2024-11-27 20:28:35,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:35,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:35,279 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:35,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:28:35,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:35,483 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:35,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash -769955631, now seen corresponding path program 1 times [2024-11-27 20:28:35,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:35,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358150378] [2024-11-27 20:28:35,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:35,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:35,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:35,487 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:35,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:28:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:35,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:28:35,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:35,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:35,892 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:35,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358150378] [2024-11-27 20:28:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358150378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:35,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:28:35,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-27 20:28:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660358231] [2024-11-27 20:28:35,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:35,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:28:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:35,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:28:35,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:28:35,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:35,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 885 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:35,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:35,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:35,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:36,905 INFO L124 PetriNetUnfolderBase]: 787/1488 cut-off events. [2024-11-27 20:28:36,906 INFO L125 PetriNetUnfolderBase]: For 27581/27581 co-relation queries the response was YES. [2024-11-27 20:28:36,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7601 conditions, 1488 events. 787/1488 cut-off events. For 27581/27581 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7243 event pairs, 239 based on Foata normal form. 63/1547 useless extension candidates. Maximal degree in co-relation 7556. Up to 828 conditions per place. [2024-11-27 20:28:36,917 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 85 selfloop transitions, 19 changer transitions 67/175 dead transitions. [2024-11-27 20:28:36,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 175 transitions, 2251 flow [2024-11-27 20:28:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:28:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-27 20:28:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-11-27 20:28:36,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2024-11-27 20:28:36,920 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 885 flow. Second operand 19 states and 288 transitions. [2024-11-27 20:28:36,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 175 transitions, 2251 flow [2024-11-27 20:28:36,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 175 transitions, 1697 flow, removed 258 selfloop flow, removed 14 redundant places. [2024-11-27 20:28:36,984 INFO L231 Difference]: Finished difference. Result has 115 places, 75 transitions, 766 flow [2024-11-27 20:28:36,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=766, PETRI_PLACES=115, PETRI_TRANSITIONS=75} [2024-11-27 20:28:36,985 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-11-27 20:28:36,985 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 75 transitions, 766 flow [2024-11-27 20:28:36,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:36,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:36,985 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:36,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:37,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:37,190 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:37,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash -675996365, now seen corresponding path program 2 times [2024-11-27 20:28:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096404318] [2024-11-27 20:28:37,191 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:28:37,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:37,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:37,193 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:37,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:28:37,248 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:28:37,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:37,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:28:37,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:37,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:37,348 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096404318] [2024-11-27 20:28:37,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096404318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:37,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:37,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:28:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759607356] [2024-11-27 20:28:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:37,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:28:37,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:37,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:28:37,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:28:37,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:37,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 75 transitions, 766 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:37,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:37,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:37,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:37,982 INFO L124 PetriNetUnfolderBase]: 913/1749 cut-off events. [2024-11-27 20:28:37,982 INFO L125 PetriNetUnfolderBase]: For 34035/34035 co-relation queries the response was YES. [2024-11-27 20:28:37,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 1749 events. 913/1749 cut-off events. For 34035/34035 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9453 event pairs, 248 based on Foata normal form. 27/1772 useless extension candidates. Maximal degree in co-relation 8725. Up to 852 conditions per place. [2024-11-27 20:28:37,997 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 98 selfloop transitions, 22 changer transitions 27/151 dead transitions. [2024-11-27 20:28:37,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 151 transitions, 1902 flow [2024-11-27 20:28:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:28:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 20:28:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 206 transitions. [2024-11-27 20:28:37,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5464190981432361 [2024-11-27 20:28:37,998 INFO L175 Difference]: Start difference. First operand has 115 places, 75 transitions, 766 flow. Second operand 13 states and 206 transitions. [2024-11-27 20:28:37,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 151 transitions, 1902 flow [2024-11-27 20:28:38,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 1609 flow, removed 134 selfloop flow, removed 12 redundant places. [2024-11-27 20:28:38,046 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 834 flow [2024-11-27 20:28:38,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=834, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2024-11-27 20:28:38,049 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-11-27 20:28:38,049 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 834 flow [2024-11-27 20:28:38,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:38,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:38,049 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:38,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:28:38,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:38,250 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:38,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2042516285, now seen corresponding path program 3 times [2024-11-27 20:28:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761421119] [2024-11-27 20:28:38,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:28:38,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:38,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:38,254 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:38,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:28:38,312 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:28:38,312 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:38,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:28:38,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:38,401 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:38,401 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761421119] [2024-11-27 20:28:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761421119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:38,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:38,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:28:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372546857] [2024-11-27 20:28:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:38,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:28:38,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:38,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:28:38,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:28:38,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:38,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 834 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:38,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:38,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:38,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:38,921 INFO L124 PetriNetUnfolderBase]: 868/1687 cut-off events. [2024-11-27 20:28:38,922 INFO L125 PetriNetUnfolderBase]: For 31111/31111 co-relation queries the response was YES. [2024-11-27 20:28:38,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 1687 events. 868/1687 cut-off events. For 31111/31111 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9126 event pairs, 282 based on Foata normal form. 45/1728 useless extension candidates. Maximal degree in co-relation 8065. Up to 861 conditions per place. [2024-11-27 20:28:38,936 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 87 selfloop transitions, 22 changer transitions 31/144 dead transitions. [2024-11-27 20:28:38,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 144 transitions, 1821 flow [2024-11-27 20:28:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:28:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:28:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-11-27 20:28:38,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-27 20:28:38,938 INFO L175 Difference]: Start difference. First operand has 115 places, 81 transitions, 834 flow. Second operand 11 states and 174 transitions. [2024-11-27 20:28:38,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 144 transitions, 1821 flow [2024-11-27 20:28:39,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 144 transitions, 1575 flow, removed 103 selfloop flow, removed 9 redundant places. [2024-11-27 20:28:39,002 INFO L231 Difference]: Finished difference. Result has 118 places, 84 transitions, 820 flow [2024-11-27 20:28:39,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=820, PETRI_PLACES=118, PETRI_TRANSITIONS=84} [2024-11-27 20:28:39,003 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-11-27 20:28:39,003 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 84 transitions, 820 flow [2024-11-27 20:28:39,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:39,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:39,004 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:39,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:28:39,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:39,204 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:39,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash 587432203, now seen corresponding path program 4 times [2024-11-27 20:28:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:39,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234233980] [2024-11-27 20:28:39,205 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:28:39,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:39,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:39,209 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:39,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:28:39,265 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:28:39,265 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:39,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:28:39,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:39,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:28:39,378 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:39,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234233980] [2024-11-27 20:28:39,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234233980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:39,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:39,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:28:39,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542005606] [2024-11-27 20:28:39,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:39,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:28:39,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:39,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:28:39,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:28:39,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:39,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 84 transitions, 820 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:39,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:39,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:39,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:39,878 INFO L124 PetriNetUnfolderBase]: 841/1629 cut-off events. [2024-11-27 20:28:39,878 INFO L125 PetriNetUnfolderBase]: For 27174/27174 co-relation queries the response was YES. [2024-11-27 20:28:39,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7450 conditions, 1629 events. 841/1629 cut-off events. For 27174/27174 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8747 event pairs, 335 based on Foata normal form. 27/1652 useless extension candidates. Maximal degree in co-relation 7399. Up to 1101 conditions per place. [2024-11-27 20:28:39,896 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 91 selfloop transitions, 16 changer transitions 31/142 dead transitions. [2024-11-27 20:28:39,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 142 transitions, 1630 flow [2024-11-27 20:28:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:28:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:28:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-11-27 20:28:39,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2024-11-27 20:28:39,899 INFO L175 Difference]: Start difference. First operand has 118 places, 84 transitions, 820 flow. Second operand 11 states and 168 transitions. [2024-11-27 20:28:39,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 142 transitions, 1630 flow [2024-11-27 20:28:39,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 142 transitions, 1539 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-11-27 20:28:39,954 INFO L231 Difference]: Finished difference. Result has 124 places, 88 transitions, 860 flow [2024-11-27 20:28:39,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=860, PETRI_PLACES=124, PETRI_TRANSITIONS=88} [2024-11-27 20:28:39,955 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-11-27 20:28:39,955 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 88 transitions, 860 flow [2024-11-27 20:28:39,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:39,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:39,956 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:39,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:40,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:40,157 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:40,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash -718621128, now seen corresponding path program 1 times [2024-11-27 20:28:40,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:40,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168985705] [2024-11-27 20:28:40,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:40,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:40,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:40,160 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:40,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:28:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:40,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:28:40,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:40,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:40,610 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:40,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168985705] [2024-11-27 20:28:40,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168985705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:40,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:28:40,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-27 20:28:40,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594070776] [2024-11-27 20:28:40,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:40,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:28:40,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:40,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:28:40,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:28:40,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:40,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 88 transitions, 860 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:40,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:40,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:40,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:42,226 INFO L124 PetriNetUnfolderBase]: 1255/2336 cut-off events. [2024-11-27 20:28:42,227 INFO L125 PetriNetUnfolderBase]: For 51076/51076 co-relation queries the response was YES. [2024-11-27 20:28:42,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11898 conditions, 2336 events. 1255/2336 cut-off events. For 51076/51076 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 12298 event pairs, 66 based on Foata normal form. 54/2386 useless extension candidates. Maximal degree in co-relation 11844. Up to 326 conditions per place. [2024-11-27 20:28:42,244 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 98 selfloop transitions, 77 changer transitions 75/254 dead transitions. [2024-11-27 20:28:42,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 254 transitions, 3153 flow [2024-11-27 20:28:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 20:28:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-27 20:28:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 399 transitions. [2024-11-27 20:28:42,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291777188328912 [2024-11-27 20:28:42,246 INFO L175 Difference]: Start difference. First operand has 124 places, 88 transitions, 860 flow. Second operand 26 states and 399 transitions. [2024-11-27 20:28:42,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 254 transitions, 3153 flow [2024-11-27 20:28:42,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 254 transitions, 2999 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-11-27 20:28:42,308 INFO L231 Difference]: Finished difference. Result has 154 places, 112 transitions, 1529 flow [2024-11-27 20:28:42,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1529, PETRI_PLACES=154, PETRI_TRANSITIONS=112} [2024-11-27 20:28:42,309 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-11-27 20:28:42,309 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 112 transitions, 1529 flow [2024-11-27 20:28:42,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:42,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:42,310 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:42,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 20:28:42,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:42,514 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:42,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash 613675633, now seen corresponding path program 2 times [2024-11-27 20:28:42,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:42,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908352154] [2024-11-27 20:28:42,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:28:42,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:42,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:42,517 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:42,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:28:42,574 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:28:42,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:42,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:28:42,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:42,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:43,140 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908352154] [2024-11-27 20:28:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908352154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:43,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:28:43,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-27 20:28:43,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372820243] [2024-11-27 20:28:43,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:43,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:28:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:43,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:28:43,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:28:43,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:43,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 112 transitions, 1529 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:43,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:43,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:43,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:45,481 INFO L124 PetriNetUnfolderBase]: 1687/3242 cut-off events. [2024-11-27 20:28:45,481 INFO L125 PetriNetUnfolderBase]: For 143918/143918 co-relation queries the response was YES. [2024-11-27 20:28:45,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21478 conditions, 3242 events. 1687/3242 cut-off events. For 143918/143918 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18897 event pairs, 304 based on Foata normal form. 81/3319 useless extension candidates. Maximal degree in co-relation 21411. Up to 1078 conditions per place. [2024-11-27 20:28:45,513 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 159 selfloop transitions, 76 changer transitions 101/340 dead transitions. [2024-11-27 20:28:45,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 340 transitions, 5653 flow [2024-11-27 20:28:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 20:28:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-27 20:28:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 530 transitions. [2024-11-27 20:28:45,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5221674876847291 [2024-11-27 20:28:45,515 INFO L175 Difference]: Start difference. First operand has 154 places, 112 transitions, 1529 flow. Second operand 35 states and 530 transitions. [2024-11-27 20:28:45,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 340 transitions, 5653 flow [2024-11-27 20:28:45,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 340 transitions, 4792 flow, removed 398 selfloop flow, removed 19 redundant places. [2024-11-27 20:28:45,731 INFO L231 Difference]: Finished difference. Result has 184 places, 144 transitions, 2150 flow [2024-11-27 20:28:45,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2150, PETRI_PLACES=184, PETRI_TRANSITIONS=144} [2024-11-27 20:28:45,731 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-11-27 20:28:45,732 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 144 transitions, 2150 flow [2024-11-27 20:28:45,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:45,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:45,732 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:45,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 20:28:45,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:45,932 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:45,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash -980560967, now seen corresponding path program 3 times [2024-11-27 20:28:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884574941] [2024-11-27 20:28:45,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:28:45,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:45,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:45,935 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:45,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:28:45,993 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 20:28:45,993 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:45,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:28:45,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:28:46,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:28:46,584 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:46,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884574941] [2024-11-27 20:28:46,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884574941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:46,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:28:46,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-27 20:28:46,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433094958] [2024-11-27 20:28:46,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:46,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:28:46,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:46,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:28:46,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:28:46,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:46,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 144 transitions, 2150 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:46,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:46,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:46,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:49,558 INFO L124 PetriNetUnfolderBase]: 2155/4165 cut-off events. [2024-11-27 20:28:49,558 INFO L125 PetriNetUnfolderBase]: For 288796/288796 co-relation queries the response was YES. [2024-11-27 20:28:49,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32782 conditions, 4165 events. 2155/4165 cut-off events. For 288796/288796 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 25013 event pairs, 144 based on Foata normal form. 99/4260 useless extension candidates. Maximal degree in co-relation 32706. Up to 693 conditions per place. [2024-11-27 20:28:49,592 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 174 selfloop transitions, 125 changer transitions 93/396 dead transitions. [2024-11-27 20:28:49,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 396 transitions, 7787 flow [2024-11-27 20:28:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:28:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-27 20:28:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 602 transitions. [2024-11-27 20:28:49,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5322723253757736 [2024-11-27 20:28:49,595 INFO L175 Difference]: Start difference. First operand has 184 places, 144 transitions, 2150 flow. Second operand 39 states and 602 transitions. [2024-11-27 20:28:49,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 396 transitions, 7787 flow [2024-11-27 20:28:49,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 396 transitions, 5602 flow, removed 1070 selfloop flow, removed 18 redundant places. [2024-11-27 20:28:49,999 INFO L231 Difference]: Finished difference. Result has 216 places, 177 transitions, 3047 flow [2024-11-27 20:28:49,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3047, PETRI_PLACES=216, PETRI_TRANSITIONS=177} [2024-11-27 20:28:50,000 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-11-27 20:28:50,000 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 177 transitions, 3047 flow [2024-11-27 20:28:50,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:50,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:50,001 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:50,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 20:28:50,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:50,201 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:50,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:50,202 INFO L85 PathProgramCache]: Analyzing trace with hash -78531117, now seen corresponding path program 4 times [2024-11-27 20:28:50,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:50,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409801115] [2024-11-27 20:28:50,202 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:28:50,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:50,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:50,204 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:50,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:28:50,266 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:28:50,266 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:50,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:28:50,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:28:50,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:28:50,828 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:50,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409801115] [2024-11-27 20:28:50,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409801115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:50,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:28:50,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-27 20:28:50,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195195841] [2024-11-27 20:28:50,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:50,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:28:50,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:50,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:28:50,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:28:50,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:50,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 177 transitions, 3047 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:50,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:50,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:50,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:53,982 INFO L124 PetriNetUnfolderBase]: 2173/4206 cut-off events. [2024-11-27 20:28:53,982 INFO L125 PetriNetUnfolderBase]: For 237543/237543 co-relation queries the response was YES. [2024-11-27 20:28:54,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29794 conditions, 4206 events. 2173/4206 cut-off events. For 237543/237543 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 24747 event pairs, 122 based on Foata normal form. 153/4355 useless extension candidates. Maximal degree in co-relation 29705. Up to 714 conditions per place. [2024-11-27 20:28:54,015 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 146 selfloop transitions, 146 changer transitions 133/429 dead transitions. [2024-11-27 20:28:54,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 429 transitions, 8073 flow [2024-11-27 20:28:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 20:28:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-27 20:28:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 611 transitions. [2024-11-27 20:28:54,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267241379310345 [2024-11-27 20:28:54,018 INFO L175 Difference]: Start difference. First operand has 216 places, 177 transitions, 3047 flow. Second operand 40 states and 611 transitions. [2024-11-27 20:28:54,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 429 transitions, 8073 flow [2024-11-27 20:28:54,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 429 transitions, 6494 flow, removed 763 selfloop flow, removed 20 redundant places. [2024-11-27 20:28:54,666 INFO L231 Difference]: Finished difference. Result has 249 places, 197 transitions, 3398 flow [2024-11-27 20:28:54,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3398, PETRI_PLACES=249, PETRI_TRANSITIONS=197} [2024-11-27 20:28:54,667 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-11-27 20:28:54,667 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 197 transitions, 3398 flow [2024-11-27 20:28:54,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:54,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:54,668 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:54,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:54,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:54,871 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:28:54,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash 41564634, now seen corresponding path program 5 times [2024-11-27 20:28:54,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:28:54,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69168032] [2024-11-27 20:28:54,872 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:28:54,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:54,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:54,877 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:54,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 20:28:54,942 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:28:54,942 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:54,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:28:54,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:55,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:55,668 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:28:55,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69168032] [2024-11-27 20:28:55,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69168032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:55,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:28:55,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-27 20:28:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478313651] [2024-11-27 20:28:55,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:55,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:28:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:28:55,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:28:55,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:28:55,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:28:55,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 197 transitions, 3398 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:55,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:28:55,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:28:55,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:28:59,221 INFO L124 PetriNetUnfolderBase]: 2263/4437 cut-off events. [2024-11-27 20:28:59,221 INFO L125 PetriNetUnfolderBase]: For 327694/327694 co-relation queries the response was YES. [2024-11-27 20:28:59,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33233 conditions, 4437 events. 2263/4437 cut-off events. For 327694/327694 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 25854 event pairs, 953 based on Foata normal form. 117/4550 useless extension candidates. Maximal degree in co-relation 33131. Up to 3024 conditions per place. [2024-11-27 20:28:59,255 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 241 selfloop transitions, 33 changer transitions 133/411 dead transitions. [2024-11-27 20:28:59,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 411 transitions, 8688 flow [2024-11-27 20:28:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 20:28:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-27 20:28:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 552 transitions. [2024-11-27 20:28:59,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144454799627214 [2024-11-27 20:28:59,258 INFO L175 Difference]: Start difference. First operand has 249 places, 197 transitions, 3398 flow. Second operand 37 states and 552 transitions. [2024-11-27 20:28:59,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 411 transitions, 8688 flow [2024-11-27 20:28:59,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 411 transitions, 7556 flow, removed 503 selfloop flow, removed 29 redundant places. [2024-11-27 20:28:59,899 INFO L231 Difference]: Finished difference. Result has 271 places, 209 transitions, 3510 flow [2024-11-27 20:28:59,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3510, PETRI_PLACES=271, PETRI_TRANSITIONS=209} [2024-11-27 20:28:59,900 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-11-27 20:28:59,900 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 209 transitions, 3510 flow [2024-11-27 20:28:59,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:59,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:28:59,900 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:59,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 20:29:00,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:00,101 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:29:00,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -101758362, now seen corresponding path program 6 times [2024-11-27 20:29:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:29:00,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664822907] [2024-11-27 20:29:00,102 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:29:00,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:00,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:00,104 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:00,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 20:29:00,172 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-27 20:29:00,172 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:00,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:29:00,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:00,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:00,895 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:29:00,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664822907] [2024-11-27 20:29:00,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664822907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:00,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:29:00,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-27 20:29:00,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692728548] [2024-11-27 20:29:00,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:00,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:29:00,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:29:00,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:29:00,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:29:00,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:29:00,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 209 transitions, 3510 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:00,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:29:00,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:29:00,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:29:05,011 INFO L124 PetriNetUnfolderBase]: 2533/5033 cut-off events. [2024-11-27 20:29:05,011 INFO L125 PetriNetUnfolderBase]: For 540847/540847 co-relation queries the response was YES. [2024-11-27 20:29:05,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42300 conditions, 5033 events. 2533/5033 cut-off events. For 540847/540847 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 30790 event pairs, 694 based on Foata normal form. 117/5146 useless extension candidates. Maximal degree in co-relation 42188. Up to 2242 conditions per place. [2024-11-27 20:29:05,049 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 234 selfloop transitions, 103 changer transitions 149/490 dead transitions. [2024-11-27 20:29:05,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 490 transitions, 10997 flow [2024-11-27 20:29:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-27 20:29:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-27 20:29:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 673 transitions. [2024-11-27 20:29:05,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5157088122605364 [2024-11-27 20:29:05,054 INFO L175 Difference]: Start difference. First operand has 271 places, 209 transitions, 3510 flow. Second operand 45 states and 673 transitions. [2024-11-27 20:29:05,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 490 transitions, 10997 flow [2024-11-27 20:29:06,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 490 transitions, 9327 flow, removed 812 selfloop flow, removed 25 redundant places. [2024-11-27 20:29:06,089 INFO L231 Difference]: Finished difference. Result has 303 places, 240 transitions, 4312 flow [2024-11-27 20:29:06,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4312, PETRI_PLACES=303, PETRI_TRANSITIONS=240} [2024-11-27 20:29:06,090 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-11-27 20:29:06,090 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 240 transitions, 4312 flow [2024-11-27 20:29:06,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:06,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:29:06,094 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:06,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 20:29:06,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:06,295 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:29:06,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1301775020, now seen corresponding path program 7 times [2024-11-27 20:29:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:29:06,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466665888] [2024-11-27 20:29:06,296 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:29:06,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:06,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:06,298 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:06,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 20:29:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:06,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:29:06,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:06,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:07,119 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:29:07,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466665888] [2024-11-27 20:29:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466665888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:07,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:29:07,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-27 20:29:07,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50966224] [2024-11-27 20:29:07,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:07,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:29:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:29:07,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:29:07,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:29:07,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:29:07,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 240 transitions, 4312 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:07,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:29:07,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:29:07,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:29:13,468 INFO L124 PetriNetUnfolderBase]: 4279/8442 cut-off events. [2024-11-27 20:29:13,468 INFO L125 PetriNetUnfolderBase]: For 1198320/1198320 co-relation queries the response was YES. [2024-11-27 20:29:13,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80489 conditions, 8442 events. 4279/8442 cut-off events. For 1198320/1198320 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 57206 event pairs, 256 based on Foata normal form. 117/8555 useless extension candidates. Maximal degree in co-relation 80365. Up to 1362 conditions per place. [2024-11-27 20:29:13,545 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 273 selfloop transitions, 296 changer transitions 135/708 dead transitions. [2024-11-27 20:29:13,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 708 transitions, 17600 flow [2024-11-27 20:29:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-27 20:29:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-27 20:29:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 843 transitions. [2024-11-27 20:29:13,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5285266457680251 [2024-11-27 20:29:13,547 INFO L175 Difference]: Start difference. First operand has 303 places, 240 transitions, 4312 flow. Second operand 55 states and 843 transitions. [2024-11-27 20:29:13,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 708 transitions, 17600 flow [2024-11-27 20:29:15,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 708 transitions, 15154 flow, removed 1173 selfloop flow, removed 30 redundant places. [2024-11-27 20:29:15,096 INFO L231 Difference]: Finished difference. Result has 351 places, 364 transitions, 7842 flow [2024-11-27 20:29:15,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=7842, PETRI_PLACES=351, PETRI_TRANSITIONS=364} [2024-11-27 20:29:15,097 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-11-27 20:29:15,097 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 364 transitions, 7842 flow [2024-11-27 20:29:15,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:15,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:29:15,097 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:15,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:15,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:15,298 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:29:15,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:15,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1583337600, now seen corresponding path program 8 times [2024-11-27 20:29:15,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:29:15,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074898759] [2024-11-27 20:29:15,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:29:15,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:15,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:15,302 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:15,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 20:29:15,358 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:29:15,358 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:15,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:29:15,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:15,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:16,098 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:29:16,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074898759] [2024-11-27 20:29:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074898759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:16,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:29:16,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-27 20:29:16,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718875270] [2024-11-27 20:29:16,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:16,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:29:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:29:16,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:29:16,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:29:16,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:29:16,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 364 transitions, 7842 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:16,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:29:16,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:29:16,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:29:24,487 INFO L124 PetriNetUnfolderBase]: 5656/11076 cut-off events. [2024-11-27 20:29:24,487 INFO L125 PetriNetUnfolderBase]: For 2600668/2600668 co-relation queries the response was YES. [2024-11-27 20:29:24,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129526 conditions, 11076 events. 5656/11076 cut-off events. For 2600668/2600668 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 77670 event pairs, 104 based on Foata normal form. 423/11495 useless extension candidates. Maximal degree in co-relation 129381. Up to 1974 conditions per place. [2024-11-27 20:29:24,591 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 210 selfloop transitions, 412 changer transitions 206/832 dead transitions. [2024-11-27 20:29:24,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 832 transitions, 27194 flow [2024-11-27 20:29:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-27 20:29:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-27 20:29:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 839 transitions. [2024-11-27 20:29:24,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5260188087774295 [2024-11-27 20:29:24,593 INFO L175 Difference]: Start difference. First operand has 351 places, 364 transitions, 7842 flow. Second operand 55 states and 839 transitions. [2024-11-27 20:29:24,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 832 transitions, 27194 flow [2024-11-27 20:29:28,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 832 transitions, 19707 flow, removed 3691 selfloop flow, removed 27 redundant places. [2024-11-27 20:29:28,970 INFO L231 Difference]: Finished difference. Result has 399 places, 473 transitions, 11033 flow [2024-11-27 20:29:28,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6101, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=11033, PETRI_PLACES=399, PETRI_TRANSITIONS=473} [2024-11-27 20:29:28,971 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-11-27 20:29:28,971 INFO L471 AbstractCegarLoop]: Abstraction has has 399 places, 473 transitions, 11033 flow [2024-11-27 20:29:28,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:28,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:29:28,972 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:28,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 20:29:29,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:29,172 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:29:29,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash -992899625, now seen corresponding path program 9 times [2024-11-27 20:29:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:29:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683846070] [2024-11-27 20:29:29,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:29:29,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:29,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:29,175 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:29,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 20:29:29,265 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:29:29,265 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:29,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:29:29,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:29:29,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:29:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:29:30,762 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:29:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683846070] [2024-11-27 20:29:30,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683846070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:29:30,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:29:30,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2024-11-27 20:29:30,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889700630] [2024-11-27 20:29:30,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:29:30,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 20:29:30,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:29:30,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 20:29:30,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:29:30,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:29:30,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 473 transitions, 11033 flow. Second operand has 37 states, 37 states have (on average 10.135135135135135) internal successors, (375), 37 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:30,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:29:30,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:29:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:29:48,716 INFO L124 PetriNetUnfolderBase]: 6682/12864 cut-off events. [2024-11-27 20:29:48,716 INFO L125 PetriNetUnfolderBase]: For 3022279/3022279 co-relation queries the response was YES. [2024-11-27 20:29:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149937 conditions, 12864 events. 6682/12864 cut-off events. For 3022279/3022279 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 85570 event pairs, 252 based on Foata normal form. 153/13013 useless extension candidates. Maximal degree in co-relation 149772. Up to 2313 conditions per place. [2024-11-27 20:29:49,039 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 317 selfloop transitions, 475 changer transitions 240/1036 dead transitions. [2024-11-27 20:29:49,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1036 transitions, 33786 flow [2024-11-27 20:29:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-27 20:29:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2024-11-27 20:29:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 1235 transitions. [2024-11-27 20:29:49,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257556406981694 [2024-11-27 20:29:49,042 INFO L175 Difference]: Start difference. First operand has 399 places, 473 transitions, 11033 flow. Second operand 81 states and 1235 transitions. [2024-11-27 20:29:49,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1036 transitions, 33786 flow [2024-11-27 20:29:58,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 1036 transitions, 27224 flow, removed 3099 selfloop flow, removed 34 redundant places. [2024-11-27 20:29:58,227 INFO L231 Difference]: Finished difference. Result has 483 places, 566 transitions, 14345 flow [2024-11-27 20:29:58,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=14345, PETRI_PLACES=483, PETRI_TRANSITIONS=566} [2024-11-27 20:29:58,228 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2024-11-27 20:29:58,228 INFO L471 AbstractCegarLoop]: Abstraction has has 483 places, 566 transitions, 14345 flow [2024-11-27 20:29:58,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 10.135135135135135) internal successors, (375), 37 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:29:58,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:29:58,228 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:58,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 20:29:58,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:58,429 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:29:58,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:58,430 INFO L85 PathProgramCache]: Analyzing trace with hash -320619370, now seen corresponding path program 10 times [2024-11-27 20:29:58,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:29:58,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277805812] [2024-11-27 20:29:58,430 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:29:58,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:58,432 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:58,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 20:29:58,504 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:29:58,504 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:29:58,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:29:58,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:58,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:00,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:30:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277805812] [2024-11-27 20:30:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277805812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:00,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:30:00,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2024-11-27 20:30:00,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657225614] [2024-11-27 20:30:00,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:00,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-27 20:30:00,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:30:00,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-27 20:30:00,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1530, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 20:30:00,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:30:00,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 566 transitions, 14345 flow. Second operand has 43 states, 43 states have (on average 10.116279069767442) internal successors, (435), 43 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:00,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:30:00,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:30:00,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:30:28,486 INFO L124 PetriNetUnfolderBase]: 8410/15963 cut-off events. [2024-11-27 20:30:28,486 INFO L125 PetriNetUnfolderBase]: For 6130739/6130739 co-relation queries the response was YES. [2024-11-27 20:30:28,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222554 conditions, 15963 events. 8410/15963 cut-off events. For 6130739/6130739 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 103278 event pairs, 48 based on Foata normal form. 180/16139 useless extension candidates. Maximal degree in co-relation 222353. Up to 3003 conditions per place. [2024-11-27 20:30:28,788 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 320 selfloop transitions, 625 changer transitions 285/1234 dead transitions. [2024-11-27 20:30:28,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 1234 transitions, 47945 flow [2024-11-27 20:30:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-27 20:30:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2024-11-27 20:30:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1463 transitions. [2024-11-27 20:30:28,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5255028735632183 [2024-11-27 20:30:28,791 INFO L175 Difference]: Start difference. First operand has 483 places, 566 transitions, 14345 flow. Second operand 96 states and 1463 transitions. [2024-11-27 20:30:28,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 1234 transitions, 47945 flow [2024-11-27 20:30:45,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 1234 transitions, 37522 flow, removed 4989 selfloop flow, removed 42 redundant places. [2024-11-27 20:30:45,348 INFO L231 Difference]: Finished difference. Result has 577 places, 680 transitions, 18550 flow [2024-11-27 20:30:45,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=10270, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=18550, PETRI_PLACES=577, PETRI_TRANSITIONS=680} [2024-11-27 20:30:45,348 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 547 predicate places. [2024-11-27 20:30:45,349 INFO L471 AbstractCegarLoop]: Abstraction has has 577 places, 680 transitions, 18550 flow [2024-11-27 20:30:45,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 10.116279069767442) internal successors, (435), 43 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:45,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:30:45,349 INFO L206 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:45,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 20:30:45,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:45,550 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:30:45,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:45,551 INFO L85 PathProgramCache]: Analyzing trace with hash 959576259, now seen corresponding path program 11 times [2024-11-27 20:30:45,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:30:45,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749210892] [2024-11-27 20:30:45,552 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:30:45,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:45,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:45,553 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:45,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 20:30:45,701 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-27 20:30:45,701 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:45,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 20:30:45,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 1 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:47,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:51,079 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:30:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749210892] [2024-11-27 20:30:51,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749210892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:51,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:30:51,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 74 [2024-11-27 20:30:51,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88738216] [2024-11-27 20:30:51,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:51,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-27 20:30:51,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:30:51,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-27 20:30:51,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=5044, Unknown=0, NotChecked=0, Total=5550 [2024-11-27 20:30:51,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:30:51,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 680 transitions, 18550 flow. Second operand has 75 states, 75 states have (on average 10.013333333333334) internal successors, (751), 75 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:30:51,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:30:51,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:30:51,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:31:34,120 INFO L124 PetriNetUnfolderBase]: 9760/19314 cut-off events. [2024-11-27 20:31:34,120 INFO L125 PetriNetUnfolderBase]: For 10211106/10211106 co-relation queries the response was YES. [2024-11-27 20:31:34,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291138 conditions, 19314 events. 9760/19314 cut-off events. For 10211106/10211106 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 135475 event pairs, 3218 based on Foata normal form. 63/19373 useless extension candidates. Maximal degree in co-relation 290898. Up to 11131 conditions per place. [2024-11-27 20:31:34,768 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 890 selfloop transitions, 307 changer transitions 255/1456 dead transitions. [2024-11-27 20:31:34,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 1456 transitions, 54587 flow [2024-11-27 20:31:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-27 20:31:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2024-11-27 20:31:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 1674 transitions. [2024-11-27 20:31:34,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.493368700265252 [2024-11-27 20:31:34,771 INFO L175 Difference]: Start difference. First operand has 577 places, 680 transitions, 18550 flow. Second operand 117 states and 1674 transitions. [2024-11-27 20:31:34,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 1456 transitions, 54587 flow [2024-11-27 20:32:07,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 1456 transitions, 41069 flow, removed 6592 selfloop flow, removed 40 redundant places. [2024-11-27 20:32:07,812 INFO L231 Difference]: Finished difference. Result has 663 places, 843 transitions, 18064 flow [2024-11-27 20:32:07,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=12857, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=117, PETRI_FLOW=18064, PETRI_PLACES=663, PETRI_TRANSITIONS=843} [2024-11-27 20:32:07,813 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 633 predicate places. [2024-11-27 20:32:07,813 INFO L471 AbstractCegarLoop]: Abstraction has has 663 places, 843 transitions, 18064 flow [2024-11-27 20:32:07,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 10.013333333333334) internal successors, (751), 75 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:07,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:32:07,814 INFO L206 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:07,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 20:32:08,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:08,015 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:32:08,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash 47815003, now seen corresponding path program 12 times [2024-11-27 20:32:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:32:08,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100910216] [2024-11-27 20:32:08,016 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:32:08,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:08,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:08,018 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:08,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c5d86e-c3eb-42dd-a33b-142e69e50e80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 20:32:08,156 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-27 20:32:08,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:32:08,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 20:32:08,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:09,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:32:13,682 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:32:13,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100910216] [2024-11-27 20:32:13,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100910216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:13,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:32:13,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 74 [2024-11-27 20:32:13,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537604191] [2024-11-27 20:32:13,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:13,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-27 20:32:13,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:32:13,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-27 20:32:13,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=5081, Unknown=0, NotChecked=0, Total=5550 [2024-11-27 20:32:13,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-27 20:32:13,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 843 transitions, 18064 flow. Second operand has 75 states, 75 states have (on average 10.013333333333334) internal successors, (751), 75 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:13,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:32:13,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-27 20:32:13,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand