./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.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_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:06:50,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:06:50,324 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:06:50,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:06:50,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:06:50,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:06:50,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:06:50,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:06:50,373 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:06:50,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:06:50,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:06:50,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:06:50,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:06:50,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:06:50,375 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:06:50,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:06:50,375 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:06:50,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:06:50,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:06:50,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:06:50,376 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:06:50,376 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:06:50,376 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:06:50,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:06:50,377 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:06:50,377 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:06:50,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:06:50,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:06:50,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:06:50,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:06:50,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:06:50,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:06:50,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:06:50,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:06:50,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:06:50,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:06:50,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:06:50,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:06:50,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:06:50,379 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_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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 -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2024-11-28 02:06:50,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:06:50,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:06:50,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:06:50,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:06:50,765 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:06:50,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2024-11-28 02:06:53,812 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data/61d392acd/8ad37886ed23415e9f4bd4bdf3262792/FLAG59a112f7f [2024-11-28 02:06:54,217 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:06:54,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2024-11-28 02:06:54,234 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data/61d392acd/8ad37886ed23415e9f4bd4bdf3262792/FLAG59a112f7f [2024-11-28 02:06:54,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data/61d392acd/8ad37886ed23415e9f4bd4bdf3262792 [2024-11-28 02:06:54,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:06:54,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:06:54,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:06:54,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:06:54,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ee5120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54, skipping insertion in model container [2024-11-28 02:06:54,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:06:54,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,858 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:06:54,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,965 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:06:54,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54 WrapperNode [2024-11-28 02:06:54,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:54,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:06:54,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:06:54,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,052 INFO L138 Inliner]: procedures = 168, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 140 [2024-11-28 02:06:55,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:55,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:06:55,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:06:55,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:06:55,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,099 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-11-28 02:06:55,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,116 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:06:55,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:06:55,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:06:55,139 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:06:55,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:55,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:06:55,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:06:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:06:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:06:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:06:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:06:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 02:06:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 02:06:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 02:06:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 02:06:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:06:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:06:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:06:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:06:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:06:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:06:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:06:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:06:55,242 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:06:55,466 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:06:55,469 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:06:55,931 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:06:55,931 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:06:56,279 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:06:56,279 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:06:56,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:56 BoogieIcfgContainer [2024-11-28 02:06:56,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:06:56,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:06:56,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:06:56,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:06:56,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:06:54" (1/3) ... [2024-11-28 02:06:56,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cfec73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:56, skipping insertion in model container [2024-11-28 02:06:56,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (2/3) ... [2024-11-28 02:06:56,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cfec73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:56, skipping insertion in model container [2024-11-28 02:06:56,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:56" (3/3) ... [2024-11-28 02:06:56,326 INFO L128 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2024-11-28 02:06:56,347 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:06:56,349 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG circular_buffer_bad.i that has 3 procedures, 49 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2024-11-28 02:06:56,349 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:06:56,440 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:06:56,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 58 transitions, 130 flow [2024-11-28 02:06:56,544 INFO L124 PetriNetUnfolderBase]: 10/56 cut-off events. [2024-11-28 02:06:56,548 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:06:56,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 56 events. 10/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-11-28 02:06:56,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 58 transitions, 130 flow [2024-11-28 02:06:56,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 55 transitions, 122 flow [2024-11-28 02:06:56,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:06:56,595 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;@7ede75ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:06:56,595 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-28 02:06:56,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:06:56,616 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-28 02:06:56,616 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:06:56,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:06:56,616 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:56,617 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:06:56,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1395752796, now seen corresponding path program 1 times [2024-11-28 02:06:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500115799] [2024-11-28 02:06:56,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:57,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500115799] [2024-11-28 02:06:57,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500115799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:57,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:57,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:06:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979844720] [2024-11-28 02:06:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:57,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:57,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:57,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:57,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:57,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:06:57,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:06:57,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:06:57,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:06:57,539 INFO L124 PetriNetUnfolderBase]: 435/835 cut-off events. [2024-11-28 02:06:57,540 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-28 02:06:57,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 835 events. 435/835 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4324 event pairs, 321 based on Foata normal form. 90/868 useless extension candidates. Maximal degree in co-relation 1487. Up to 693 conditions per place. [2024-11-28 02:06:57,555 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 29 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2024-11-28 02:06:57,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 166 flow [2024-11-28 02:06:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:06:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-28 02:06:57,572 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-28 02:06:57,574 INFO L175 Difference]: Start difference. First operand has 52 places, 55 transitions, 122 flow. Second operand 3 states and 93 transitions. [2024-11-28 02:06:57,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 166 flow [2024-11-28 02:06:57,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:06:57,583 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 100 flow [2024-11-28 02:06:57,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-28 02:06:57,589 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-28 02:06:57,591 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 100 flow [2024-11-28 02:06:57,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:57,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:06:57,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:57,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:06:57,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:06:57,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:57,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1395752795, now seen corresponding path program 1 times [2024-11-28 02:06:57,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:57,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293435474] [2024-11-28 02:06:57,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:57,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:58,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293435474] [2024-11-28 02:06:58,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293435474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:58,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:58,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:06:58,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351828339] [2024-11-28 02:06:58,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:58,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:58,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:58,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:58,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-28 02:06:58,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:58,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:06:58,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-28 02:06:58,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:06:58,638 INFO L124 PetriNetUnfolderBase]: 779/1472 cut-off events. [2024-11-28 02:06:58,638 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 02:06:58,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1472 events. 779/1472 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7751 event pairs, 265 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2688. Up to 698 conditions per place. [2024-11-28 02:06:58,657 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 53 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-28 02:06:58,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 261 flow [2024-11-28 02:06:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:06:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-11-28 02:06:58,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-11-28 02:06:58,659 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 100 flow. Second operand 3 states and 117 transitions. [2024-11-28 02:06:58,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 261 flow [2024-11-28 02:06:58,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:06:58,666 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 113 flow [2024-11-28 02:06:58,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-28 02:06:58,668 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-28 02:06:58,669 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 113 flow [2024-11-28 02:06:58,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:58,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:06:58,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:58,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:06:58,670 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:06:58,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1292684264, now seen corresponding path program 1 times [2024-11-28 02:06:58,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:58,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057052113] [2024-11-28 02:06:58,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:58,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057052113] [2024-11-28 02:06:59,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057052113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:59,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:59,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:06:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788651968] [2024-11-28 02:06:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:06:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:06:59,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:06:59,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:06:59,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:06:59,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:06:59,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:06:59,495 INFO L124 PetriNetUnfolderBase]: 822/1497 cut-off events. [2024-11-28 02:06:59,495 INFO L125 PetriNetUnfolderBase]: For 54/64 co-relation queries the response was YES. [2024-11-28 02:06:59,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 1497 events. 822/1497 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7625 event pairs, 611 based on Foata normal form. 0/1389 useless extension candidates. Maximal degree in co-relation 2908. Up to 1283 conditions per place. [2024-11-28 02:06:59,512 INFO L140 encePairwiseOnDemand]: 56/58 looper letters, 31 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2024-11-28 02:06:59,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 171 flow [2024-11-28 02:06:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:06:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-28 02:06:59,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-11-28 02:06:59,515 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 113 flow. Second operand 3 states and 89 transitions. [2024-11-28 02:06:59,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 171 flow [2024-11-28 02:06:59,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:06:59,520 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 107 flow [2024-11-28 02:06:59,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-28 02:06:59,522 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-28 02:06:59,523 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 107 flow [2024-11-28 02:06:59,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:06:59,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:59,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:06:59,524 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:06:59,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash 394971010, now seen corresponding path program 1 times [2024-11-28 02:06:59,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:59,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172646809] [2024-11-28 02:06:59,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:59,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:59,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:59,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172646809] [2024-11-28 02:06:59,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172646809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:59,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:59,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:06:59,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821888368] [2024-11-28 02:06:59,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:59,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:59,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:59,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:06:59,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:06:59,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:06:59,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:06:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:00,110 INFO L124 PetriNetUnfolderBase]: 1072/1954 cut-off events. [2024-11-28 02:07:00,111 INFO L125 PetriNetUnfolderBase]: For 89/108 co-relation queries the response was YES. [2024-11-28 02:07:00,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3755 conditions, 1954 events. 1072/1954 cut-off events. For 89/108 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11264 event pairs, 510 based on Foata normal form. 24/1900 useless extension candidates. Maximal degree in co-relation 3746. Up to 1138 conditions per place. [2024-11-28 02:07:00,126 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 51 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-28 02:07:00,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 264 flow [2024-11-28 02:07:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-11-28 02:07:00,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:07:00,130 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 107 flow. Second operand 3 states and 116 transitions. [2024-11-28 02:07:00,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 264 flow [2024-11-28 02:07:00,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:00,135 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 118 flow [2024-11-28 02:07:00,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-11-28 02:07:00,136 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-28 02:07:00,136 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 118 flow [2024-11-28 02:07:00,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:00,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:00,137 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:00,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:07:00,139 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:00,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash -953440735, now seen corresponding path program 1 times [2024-11-28 02:07:00,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:00,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077903885] [2024-11-28 02:07:00,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:00,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:00,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077903885] [2024-11-28 02:07:00,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077903885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:00,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:00,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77403391] [2024-11-28 02:07:00,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:00,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:00,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:00,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:00,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:00,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:00,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:00,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:00,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:00,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:00,732 INFO L124 PetriNetUnfolderBase]: 1303/2479 cut-off events. [2024-11-28 02:07:00,732 INFO L125 PetriNetUnfolderBase]: For 239/255 co-relation queries the response was YES. [2024-11-28 02:07:00,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4963 conditions, 2479 events. 1303/2479 cut-off events. For 239/255 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 14281 event pairs, 486 based on Foata normal form. 48/2472 useless extension candidates. Maximal degree in co-relation 4953. Up to 1292 conditions per place. [2024-11-28 02:07:00,752 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 48 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-28 02:07:00,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 274 flow [2024-11-28 02:07:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-28 02:07:00,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-11-28 02:07:00,754 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 118 flow. Second operand 3 states and 111 transitions. [2024-11-28 02:07:00,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 274 flow [2024-11-28 02:07:00,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:00,757 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 131 flow [2024-11-28 02:07:00,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-11-28 02:07:00,758 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-28 02:07:00,758 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 131 flow [2024-11-28 02:07:00,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:00,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:00,759 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:00,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:07:00,759 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:00,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1829149364, now seen corresponding path program 1 times [2024-11-28 02:07:00,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:00,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111632003] [2024-11-28 02:07:00,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:00,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111632003] [2024-11-28 02:07:00,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111632003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:00,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:00,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:00,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896017350] [2024-11-28 02:07:00,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:00,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:00,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:00,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:00,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:00,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:00,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:00,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:00,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:00,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:01,465 INFO L124 PetriNetUnfolderBase]: 2132/4076 cut-off events. [2024-11-28 02:07:01,465 INFO L125 PetriNetUnfolderBase]: For 730/762 co-relation queries the response was YES. [2024-11-28 02:07:01,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8487 conditions, 4076 events. 2132/4076 cut-off events. For 730/762 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 26518 event pairs, 977 based on Foata normal form. 69/4034 useless extension candidates. Maximal degree in co-relation 8475. Up to 2078 conditions per place. [2024-11-28 02:07:01,495 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 55 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-11-28 02:07:01,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 320 flow [2024-11-28 02:07:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-28 02:07:01,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6609195402298851 [2024-11-28 02:07:01,497 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 131 flow. Second operand 3 states and 115 transitions. [2024-11-28 02:07:01,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 320 flow [2024-11-28 02:07:01,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:01,501 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 140 flow [2024-11-28 02:07:01,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-28 02:07:01,502 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-28 02:07:01,502 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 140 flow [2024-11-28 02:07:01,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:01,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:01,505 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:01,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:07:01,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:01,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:01,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2052396765, now seen corresponding path program 1 times [2024-11-28 02:07:01,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:01,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128316792] [2024-11-28 02:07:01,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:01,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:01,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128316792] [2024-11-28 02:07:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128316792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:01,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:01,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:01,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062839150] [2024-11-28 02:07:01,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:01,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:01,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:01,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:01,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:01,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:01,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:01,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:01,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:01,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:02,142 INFO L124 PetriNetUnfolderBase]: 1676/3241 cut-off events. [2024-11-28 02:07:02,142 INFO L125 PetriNetUnfolderBase]: For 679/685 co-relation queries the response was YES. [2024-11-28 02:07:02,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 3241 events. 1676/3241 cut-off events. For 679/685 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 20282 event pairs, 743 based on Foata normal form. 86/3249 useless extension candidates. Maximal degree in co-relation 6984. Up to 1575 conditions per place. [2024-11-28 02:07:02,170 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 46 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-28 02:07:02,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 283 flow [2024-11-28 02:07:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-28 02:07:02,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6149425287356322 [2024-11-28 02:07:02,174 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 140 flow. Second operand 3 states and 107 transitions. [2024-11-28 02:07:02,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 283 flow [2024-11-28 02:07:02,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:02,181 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 139 flow [2024-11-28 02:07:02,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-28 02:07:02,183 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-28 02:07:02,184 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 139 flow [2024-11-28 02:07:02,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:02,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:02,184 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:02,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:07:02,184 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:02,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 265887300, now seen corresponding path program 1 times [2024-11-28 02:07:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:02,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413167582] [2024-11-28 02:07:02,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:02,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413167582] [2024-11-28 02:07:02,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413167582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:02,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358428669] [2024-11-28 02:07:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:02,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:02,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:02,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:02,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:02,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:02,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:02,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:02,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:02,693 INFO L124 PetriNetUnfolderBase]: 1070/2329 cut-off events. [2024-11-28 02:07:02,693 INFO L125 PetriNetUnfolderBase]: For 780/780 co-relation queries the response was YES. [2024-11-28 02:07:02,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5103 conditions, 2329 events. 1070/2329 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14075 event pairs, 335 based on Foata normal form. 126/2418 useless extension candidates. Maximal degree in co-relation 5090. Up to 1144 conditions per place. [2024-11-28 02:07:02,713 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 40 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-28 02:07:02,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 269 flow [2024-11-28 02:07:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-28 02:07:02,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-28 02:07:02,715 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 139 flow. Second operand 3 states and 104 transitions. [2024-11-28 02:07:02,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 269 flow [2024-11-28 02:07:02,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:02,727 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2024-11-28 02:07:02,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-28 02:07:02,728 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-28 02:07:02,728 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2024-11-28 02:07:02,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:02,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:02,728 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:02,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:07:02,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:02,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:02,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2106173273, now seen corresponding path program 1 times [2024-11-28 02:07:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:02,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235201944] [2024-11-28 02:07:02,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:02,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:03,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235201944] [2024-11-28 02:07:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235201944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:03,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:03,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631883294] [2024-11-28 02:07:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:03,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:03,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:03,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:03,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:03,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:07:03,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:03,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:03,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:07:03,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:03,805 INFO L124 PetriNetUnfolderBase]: 1621/3392 cut-off events. [2024-11-28 02:07:03,805 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2024-11-28 02:07:03,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 3392 events. 1621/3392 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 19654 event pairs, 663 based on Foata normal form. 0/3278 useless extension candidates. Maximal degree in co-relation 7860. Up to 977 conditions per place. [2024-11-28 02:07:03,826 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 104 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-28 02:07:03,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 121 transitions, 608 flow [2024-11-28 02:07:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:07:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-11-28 02:07:03,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6827586206896552 [2024-11-28 02:07:03,828 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 5 states and 198 transitions. [2024-11-28 02:07:03,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 121 transitions, 608 flow [2024-11-28 02:07:03,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 121 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:03,833 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 161 flow [2024-11-28 02:07:03,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-11-28 02:07:03,834 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-28 02:07:03,834 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 161 flow [2024-11-28 02:07:03,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:03,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:03,835 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:03,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:07:03,835 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:03,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:03,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1071783601, now seen corresponding path program 1 times [2024-11-28 02:07:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:03,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236950870] [2024-11-28 02:07:03,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:03,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:04,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236950870] [2024-11-28 02:07:04,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236950870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:04,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:04,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:04,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234258102] [2024-11-28 02:07:04,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:04,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:04,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:04,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:04,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:04,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:04,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:04,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:04,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:04,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:04,421 INFO L124 PetriNetUnfolderBase]: 1237/2629 cut-off events. [2024-11-28 02:07:04,421 INFO L125 PetriNetUnfolderBase]: For 1014/1020 co-relation queries the response was YES. [2024-11-28 02:07:04,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5999 conditions, 2629 events. 1237/2629 cut-off events. For 1014/1020 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14429 event pairs, 516 based on Foata normal form. 28/2589 useless extension candidates. Maximal degree in co-relation 5983. Up to 1667 conditions per place. [2024-11-28 02:07:04,438 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 49 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-28 02:07:04,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 320 flow [2024-11-28 02:07:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-28 02:07:04,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6264367816091954 [2024-11-28 02:07:04,440 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 161 flow. Second operand 3 states and 109 transitions. [2024-11-28 02:07:04,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 320 flow [2024-11-28 02:07:04,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 312 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:04,444 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 161 flow [2024-11-28 02:07:04,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-11-28 02:07:04,445 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-28 02:07:04,445 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 161 flow [2024-11-28 02:07:04,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:04,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:04,446 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:04,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:07:04,446 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:04,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:04,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1257082726, now seen corresponding path program 1 times [2024-11-28 02:07:04,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:04,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917351384] [2024-11-28 02:07:04,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:04,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:04,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:04,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917351384] [2024-11-28 02:07:04,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917351384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:04,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:04,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:04,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046024498] [2024-11-28 02:07:04,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:04,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:04,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:04,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:04,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:04,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:04,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:04,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:04,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:05,087 INFO L124 PetriNetUnfolderBase]: 1705/3759 cut-off events. [2024-11-28 02:07:05,088 INFO L125 PetriNetUnfolderBase]: For 1404/1408 co-relation queries the response was YES. [2024-11-28 02:07:05,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 3759 events. 1705/3759 cut-off events. For 1404/1408 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 23851 event pairs, 650 based on Foata normal form. 104/3757 useless extension candidates. Maximal degree in co-relation 8560. Up to 1740 conditions per place. [2024-11-28 02:07:05,114 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 79 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-11-28 02:07:05,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 490 flow [2024-11-28 02:07:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:05,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:07:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-28 02:07:05,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6853448275862069 [2024-11-28 02:07:05,116 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 161 flow. Second operand 4 states and 159 transitions. [2024-11-28 02:07:05,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 490 flow [2024-11-28 02:07:05,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:05,120 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 173 flow [2024-11-28 02:07:05,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-11-28 02:07:05,121 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-28 02:07:05,122 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 173 flow [2024-11-28 02:07:05,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:05,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:05,123 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:05,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:07:05,123 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:05,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1709111583, now seen corresponding path program 1 times [2024-11-28 02:07:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:05,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130833340] [2024-11-28 02:07:05,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:05,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:07:05,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72401640] [2024-11-28 02:07:05,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:05,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:05,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:05,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:05,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:07:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:05,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:07:05,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:05,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:05,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:05,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130833340] [2024-11-28 02:07:05,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:07:05,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72401640] [2024-11-28 02:07:05,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72401640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:05,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:05,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:05,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708709611] [2024-11-28 02:07:05,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:05,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:05,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:05,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:05,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:05,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:05,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:05,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:05,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:06,034 INFO L124 PetriNetUnfolderBase]: 1410/3072 cut-off events. [2024-11-28 02:07:06,034 INFO L125 PetriNetUnfolderBase]: For 1935/1937 co-relation queries the response was YES. [2024-11-28 02:07:06,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7544 conditions, 3072 events. 1410/3072 cut-off events. For 1935/1937 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 17833 event pairs, 452 based on Foata normal form. 26/3034 useless extension candidates. Maximal degree in co-relation 7526. Up to 1232 conditions per place. [2024-11-28 02:07:06,056 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 66 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-11-28 02:07:06,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 448 flow [2024-11-28 02:07:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:07:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-28 02:07:06,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-11-28 02:07:06,058 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 173 flow. Second operand 4 states and 144 transitions. [2024-11-28 02:07:06,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 448 flow [2024-11-28 02:07:06,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 434 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:06,062 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 177 flow [2024-11-28 02:07:06,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2024-11-28 02:07:06,063 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-28 02:07:06,064 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 177 flow [2024-11-28 02:07:06,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:06,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:06,064 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:06,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:07:06,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:07:06,265 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:06,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1453505790, now seen corresponding path program 1 times [2024-11-28 02:07:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:06,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276888066] [2024-11-28 02:07:06,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:06,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:07,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:07,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276888066] [2024-11-28 02:07:07,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276888066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:07,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:07,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:07:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259294826] [2024-11-28 02:07:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:07,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:07:07,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:07,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:07:07,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:07:07,833 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:07,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 177 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:07,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:07,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:07,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:09,145 INFO L124 PetriNetUnfolderBase]: 1643/3570 cut-off events. [2024-11-28 02:07:09,146 INFO L125 PetriNetUnfolderBase]: For 2109/2113 co-relation queries the response was YES. [2024-11-28 02:07:09,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 3570 events. 1643/3570 cut-off events. For 2109/2113 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 21898 event pairs, 435 based on Foata normal form. 0/3508 useless extension candidates. Maximal degree in co-relation 8684. Up to 1857 conditions per place. [2024-11-28 02:07:09,165 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 122 selfloop transitions, 27 changer transitions 0/164 dead transitions. [2024-11-28 02:07:09,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 164 transitions, 918 flow [2024-11-28 02:07:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:07:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:07:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-11-28 02:07:09,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2024-11-28 02:07:09,168 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 177 flow. Second operand 14 states and 428 transitions. [2024-11-28 02:07:09,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 164 transitions, 918 flow [2024-11-28 02:07:09,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 164 transitions, 904 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:07:09,174 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 381 flow [2024-11-28 02:07:09,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=381, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-11-28 02:07:09,175 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-28 02:07:09,175 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 381 flow [2024-11-28 02:07:09,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:09,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:09,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:09,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:07:09,176 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:09,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:09,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1517737176, now seen corresponding path program 2 times [2024-11-28 02:07:09,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:09,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800953676] [2024-11-28 02:07:09,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:09,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:09,206 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:07:09,206 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800953676] [2024-11-28 02:07:10,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800953676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:10,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:10,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:07:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553388933] [2024-11-28 02:07:10,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:10,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:07:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:10,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:07:10,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:07:10,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:10,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 381 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:10,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:10,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:10,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:11,953 INFO L124 PetriNetUnfolderBase]: 1951/4187 cut-off events. [2024-11-28 02:07:11,953 INFO L125 PetriNetUnfolderBase]: For 4182/4198 co-relation queries the response was YES. [2024-11-28 02:07:11,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11377 conditions, 4187 events. 1951/4187 cut-off events. For 4182/4198 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 26418 event pairs, 385 based on Foata normal form. 12/4143 useless extension candidates. Maximal degree in co-relation 11350. Up to 1658 conditions per place. [2024-11-28 02:07:11,991 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 143 selfloop transitions, 40 changer transitions 0/198 dead transitions. [2024-11-28 02:07:11,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 198 transitions, 1263 flow [2024-11-28 02:07:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:07:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 02:07:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 493 transitions. [2024-11-28 02:07:11,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-28 02:07:11,998 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 381 flow. Second operand 16 states and 493 transitions. [2024-11-28 02:07:11,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 198 transitions, 1263 flow [2024-11-28 02:07:12,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 198 transitions, 1254 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:12,018 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 575 flow [2024-11-28 02:07:12,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=575, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2024-11-28 02:07:12,019 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-11-28 02:07:12,019 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 575 flow [2024-11-28 02:07:12,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:12,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:12,020 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:12,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:07:12,021 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:12,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash 13676448, now seen corresponding path program 2 times [2024-11-28 02:07:12,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:12,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764737795] [2024-11-28 02:07:12,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:12,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:12,041 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:07:12,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:07:12,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:12,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764737795] [2024-11-28 02:07:12,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764737795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:12,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:12,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:12,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959083695] [2024-11-28 02:07:12,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:12,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:12,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:12,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:12,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:12,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-28 02:07:12,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:12,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:12,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-28 02:07:12,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:12,713 INFO L124 PetriNetUnfolderBase]: 1953/4149 cut-off events. [2024-11-28 02:07:12,714 INFO L125 PetriNetUnfolderBase]: For 6212/6230 co-relation queries the response was YES. [2024-11-28 02:07:12,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12339 conditions, 4149 events. 1953/4149 cut-off events. For 6212/6230 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 26415 event pairs, 1349 based on Foata normal form. 8/4074 useless extension candidates. Maximal degree in co-relation 12306. Up to 3289 conditions per place. [2024-11-28 02:07:12,747 INFO L140 encePairwiseOnDemand]: 56/58 looper letters, 70 selfloop transitions, 1 changer transitions 2/86 dead transitions. [2024-11-28 02:07:12,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 86 transitions, 717 flow [2024-11-28 02:07:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-28 02:07:12,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-11-28 02:07:12,750 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 575 flow. Second operand 3 states and 90 transitions. [2024-11-28 02:07:12,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 86 transitions, 717 flow [2024-11-28 02:07:12,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 664 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-28 02:07:12,774 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 517 flow [2024-11-28 02:07:12,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=517, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2024-11-28 02:07:12,775 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-11-28 02:07:12,775 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 517 flow [2024-11-28 02:07:12,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:12,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:12,776 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:12,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:07:12,776 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:12,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash 88724586, now seen corresponding path program 1 times [2024-11-28 02:07:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639228539] [2024-11-28 02:07:12,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:12,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:12,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639228539] [2024-11-28 02:07:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639228539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:12,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:12,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:12,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126252146] [2024-11-28 02:07:12,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:12,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:12,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:12,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:12,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:12,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-28 02:07:12,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:12,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:12,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-28 02:07:12,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:13,392 INFO L124 PetriNetUnfolderBase]: 1813/3714 cut-off events. [2024-11-28 02:07:13,392 INFO L125 PetriNetUnfolderBase]: For 4797/4803 co-relation queries the response was YES. [2024-11-28 02:07:13,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10793 conditions, 3714 events. 1813/3714 cut-off events. For 4797/4803 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21792 event pairs, 463 based on Foata normal form. 44/3700 useless extension candidates. Maximal degree in co-relation 10759. Up to 2323 conditions per place. [2024-11-28 02:07:13,417 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 75 selfloop transitions, 5 changer transitions 9/101 dead transitions. [2024-11-28 02:07:13,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 775 flow [2024-11-28 02:07:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-28 02:07:13,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5919540229885057 [2024-11-28 02:07:13,418 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 517 flow. Second operand 3 states and 103 transitions. [2024-11-28 02:07:13,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 775 flow [2024-11-28 02:07:13,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 734 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 02:07:13,430 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 456 flow [2024-11-28 02:07:13,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-11-28 02:07:13,432 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-11-28 02:07:13,432 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 456 flow [2024-11-28 02:07:13,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:13,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:13,433 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:13,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:07:13,433 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:13,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash -415511690, now seen corresponding path program 1 times [2024-11-28 02:07:13,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:13,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492457005] [2024-11-28 02:07:13,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:13,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:07:13,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661070530] [2024-11-28 02:07:13,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:13,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:13,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:13,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:13,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:07:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:13,620 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:13,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:07:13,724 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:13,725 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2024-11-28 02:07:13,732 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-28 02:07:13,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 15 remaining) [2024-11-28 02:07:13,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 15 remaining) [2024-11-28 02:07:13,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-28 02:07:13,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-28 02:07:13,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2024-11-28 02:07:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-28 02:07:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-28 02:07:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 15 remaining) [2024-11-28 02:07:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-28 02:07:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-28 02:07:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-28 02:07:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-28 02:07:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2024-11-28 02:07:13,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:13,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:07:13,936 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:14,026 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:07:14,026 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:07:14,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:07:14 BasicIcfg [2024-11-28 02:07:14,034 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:07:14,035 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:07:14,035 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:07:14,035 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:07:14,036 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:56" (3/4) ... [2024-11-28 02:07:14,038 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:07:14,039 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:07:14,040 INFO L158 Benchmark]: Toolchain (without parser) took 19779.18ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 105.8MB in the beginning and 285.7MB in the end (delta: -179.8MB). Peak memory consumption was 96.6MB. Max. memory is 16.1GB. [2024-11-28 02:07:14,041 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:14,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 704.16ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 84.9MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:07:14,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.23ms. Allocated memory is still 142.6MB. Free memory was 84.9MB in the beginning and 82.9MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:07:14,042 INFO L158 Benchmark]: Boogie Preprocessor took 83.45ms. Allocated memory is still 142.6MB. Free memory was 82.5MB in the beginning and 80.2MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:14,042 INFO L158 Benchmark]: RCFGBuilder took 1141.14ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 35.2MB in the end (delta: 45.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-28 02:07:14,042 INFO L158 Benchmark]: TraceAbstraction took 17748.70ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 34.9MB in the beginning and 285.8MB in the end (delta: -250.9MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2024-11-28 02:07:14,043 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 419.4MB. Free memory was 285.8MB in the beginning and 285.7MB in the end (delta: 81.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:14,044 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 704.16ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 84.9MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.23ms. Allocated memory is still 142.6MB. Free memory was 84.9MB in the beginning and 82.9MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.45ms. Allocated memory is still 142.6MB. Free memory was 82.5MB in the beginning and 80.2MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1141.14ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 35.2MB in the end (delta: 45.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17748.70ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 34.9MB in the beginning and 285.8MB in the end (delta: -250.9MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 419.4MB. Free memory was 285.8MB in the beginning and 285.7MB in the end (delta: 81.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 681]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 681. Possible FailurePath: [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1=-1, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1=-1, id2=0, m={4:0}, next=0, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L709] 1 buffer[next] = b [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] CALL 2 reach_error() [L681] COND FALSE 2 !(0) VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L681] 2 __assert_fail ("0", "", 0, __extension__ __PRETTY_FUNCTION__) VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: 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: 762]: 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: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 681]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 15 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: 17.5s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 892 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 797 mSDsluCounter, 248 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2703 IncrementalHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 11 mSDtfsCounter, 2703 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=575occurred in iteration=14, InterpolantAutomatonStates: 76, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 415 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 2172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 13/13 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 [2024-11-28 02:07:14,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:17,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:17,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 02:07:17,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:17,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:17,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:17,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:17,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:17,322 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:17,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:17,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:17,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:17,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:17,323 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:17,323 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:17,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:17,324 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:17,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:17,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:17,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:17,324 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:07:17,324 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:07:17,325 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:07:17,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:17,325 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:07:17,325 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:07:17,325 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:07:17,325 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:07:17,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:17,326 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:17,326 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:17,326 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:17,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:17,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:17,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:17,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:17,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:17,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:17,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:17,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:17,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:17,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:17,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:17,328 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:07:17,328 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:07:17,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:17,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:17,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:17,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:17,329 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_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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 -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2024-11-28 02:07:17,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:17,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:17,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:17,718 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:17,719 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:17,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2024-11-28 02:07:20,988 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data/6e0a55d74/a770cdde97464476b58931a6db6c565e/FLAGaff24cbfe [2024-11-28 02:07:21,351 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:21,351 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2024-11-28 02:07:21,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data/6e0a55d74/a770cdde97464476b58931a6db6c565e/FLAGaff24cbfe [2024-11-28 02:07:21,400 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/data/6e0a55d74/a770cdde97464476b58931a6db6c565e [2024-11-28 02:07:21,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:21,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:21,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:21,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:21,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:21,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:21" (1/1) ... [2024-11-28 02:07:21,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ae51f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:21, skipping insertion in model container [2024-11-28 02:07:21,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:21" (1/1) ... [2024-11-28 02:07:21,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:21,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:22,003 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:22,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:22,142 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:22,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22 WrapperNode [2024-11-28 02:07:22,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:22,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:22,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:22,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:22,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,218 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 139 [2024-11-28 02:07:22,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:22,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:22,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:22,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:22,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,265 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-11-28 02:07:22,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,283 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:22,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:22,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:22,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:22,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (1/1) ... [2024-11-28 02:07:22,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:22,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:22,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:22,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 02:07:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 02:07:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 02:07:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-28 02:07:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 02:07:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 02:07:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 02:07:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 02:07:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:07:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-28 02:07:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-28 02:07:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-28 02:07:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-28 02:07:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:07:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:07:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:07:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:07:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-28 02:07:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-28 02:07:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-28 02:07:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-28 02:07:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:07:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:22,395 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:07:22,583 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:22,585 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:23,015 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:07:23,015 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:23,351 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:23,351 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:07:23,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:23 BoogieIcfgContainer [2024-11-28 02:07:23,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:23,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:23,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:23,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:23,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:21" (1/3) ... [2024-11-28 02:07:23,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1423aaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:23, skipping insertion in model container [2024-11-28 02:07:23,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:22" (2/3) ... [2024-11-28 02:07:23,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1423aaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:23, skipping insertion in model container [2024-11-28 02:07:23,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:23" (3/3) ... [2024-11-28 02:07:23,363 INFO L128 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2024-11-28 02:07:23,380 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:23,381 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG circular_buffer_bad.i that has 3 procedures, 49 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2024-11-28 02:07:23,382 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:07:23,498 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:07:23,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 58 transitions, 130 flow [2024-11-28 02:07:23,597 INFO L124 PetriNetUnfolderBase]: 10/56 cut-off events. [2024-11-28 02:07:23,602 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:07:23,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 56 events. 10/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-11-28 02:07:23,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 58 transitions, 130 flow [2024-11-28 02:07:23,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 55 transitions, 122 flow [2024-11-28 02:07:23,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:23,639 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;@22a03142, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:23,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-28 02:07:23,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:07:23,652 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-28 02:07:23,653 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:07:23,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:23,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:23,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:23,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1874386852, now seen corresponding path program 1 times [2024-11-28 02:07:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033560925] [2024-11-28 02:07:23,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:23,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:23,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:23,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:07:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:23,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:07:23,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:24,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:24,015 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:24,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033560925] [2024-11-28 02:07:24,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033560925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:24,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:24,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:24,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401970818] [2024-11-28 02:07:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:24,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:24,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:24,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:24,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:24,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:07:24,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:24,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:24,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:07:24,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:24,489 INFO L124 PetriNetUnfolderBase]: 435/835 cut-off events. [2024-11-28 02:07:24,489 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-28 02:07:24,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 835 events. 435/835 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4318 event pairs, 321 based on Foata normal form. 90/868 useless extension candidates. Maximal degree in co-relation 1487. Up to 693 conditions per place. [2024-11-28 02:07:24,499 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 29 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2024-11-28 02:07:24,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 166 flow [2024-11-28 02:07:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-28 02:07:24,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-28 02:07:24,515 INFO L175 Difference]: Start difference. First operand has 52 places, 55 transitions, 122 flow. Second operand 3 states and 93 transitions. [2024-11-28 02:07:24,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 166 flow [2024-11-28 02:07:24,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:07:24,526 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 100 flow [2024-11-28 02:07:24,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-28 02:07:24,534 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-28 02:07:24,535 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 100 flow [2024-11-28 02:07:24,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:24,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:24,537 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:24,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:07:24,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:24,742 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:24,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1874386853, now seen corresponding path program 1 times [2024-11-28 02:07:24,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:24,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395484878] [2024-11-28 02:07:24,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:24,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:24,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:24,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:07:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:24,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:07:24,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:25,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:25,154 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:25,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395484878] [2024-11-28 02:07:25,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395484878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:25,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:25,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:25,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300607609] [2024-11-28 02:07:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:25,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:25,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:25,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:25,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:25,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-28 02:07:25,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:25,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:25,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-28 02:07:25,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:25,624 INFO L124 PetriNetUnfolderBase]: 779/1472 cut-off events. [2024-11-28 02:07:25,625 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 02:07:25,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1472 events. 779/1472 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7764 event pairs, 265 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 2688. Up to 698 conditions per place. [2024-11-28 02:07:25,638 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 53 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-28 02:07:25,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 261 flow [2024-11-28 02:07:25,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-11-28 02:07:25,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-11-28 02:07:25,640 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 100 flow. Second operand 3 states and 117 transitions. [2024-11-28 02:07:25,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 261 flow [2024-11-28 02:07:25,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:25,646 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 113 flow [2024-11-28 02:07:25,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-28 02:07:25,647 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-28 02:07:25,648 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 113 flow [2024-11-28 02:07:25,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:25,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:25,648 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:25,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:07:25,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:25,849 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:25,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:25,851 INFO L85 PathProgramCache]: Analyzing trace with hash 989359446, now seen corresponding path program 1 times [2024-11-28 02:07:25,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:25,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361665636] [2024-11-28 02:07:25,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:25,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:25,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:25,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:25,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:07:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:26,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:07:26,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:26,138 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:26,139 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:26,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361665636] [2024-11-28 02:07:26,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361665636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:26,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:26,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:26,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411841295] [2024-11-28 02:07:26,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:26,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:26,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:26,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:26,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:26,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:26,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:26,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:26,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:26,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:26,817 INFO L124 PetriNetUnfolderBase]: 977/1968 cut-off events. [2024-11-28 02:07:26,817 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-28 02:07:26,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3668 conditions, 1968 events. 977/1968 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10743 event pairs, 196 based on Foata normal form. 74/1986 useless extension candidates. Maximal degree in co-relation 3660. Up to 626 conditions per place. [2024-11-28 02:07:26,833 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 74 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-28 02:07:26,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 94 transitions, 369 flow [2024-11-28 02:07:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:07:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-28 02:07:26,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7068965517241379 [2024-11-28 02:07:26,838 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 113 flow. Second operand 4 states and 164 transitions. [2024-11-28 02:07:26,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 94 transitions, 369 flow [2024-11-28 02:07:26,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 94 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:26,844 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 133 flow [2024-11-28 02:07:26,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-11-28 02:07:26,845 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-28 02:07:26,846 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 133 flow [2024-11-28 02:07:26,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:26,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:26,847 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:26,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:27,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:27,051 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:27,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash -101110652, now seen corresponding path program 1 times [2024-11-28 02:07:27,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598430254] [2024-11-28 02:07:27,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:27,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:27,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:27,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:27,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:07:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:27,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:07:27,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:27,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:27,244 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598430254] [2024-11-28 02:07:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598430254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:27,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:27,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:07:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685892655] [2024-11-28 02:07:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:27,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:27,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:27,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:27,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-28 02:07:27,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:27,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:27,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-28 02:07:27,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:27,656 INFO L124 PetriNetUnfolderBase]: 982/1952 cut-off events. [2024-11-28 02:07:27,656 INFO L125 PetriNetUnfolderBase]: For 401/421 co-relation queries the response was YES. [2024-11-28 02:07:27,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3868 conditions, 1952 events. 982/1952 cut-off events. For 401/421 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10927 event pairs, 750 based on Foata normal form. 3/1885 useless extension candidates. Maximal degree in co-relation 3857. Up to 1543 conditions per place. [2024-11-28 02:07:27,674 INFO L140 encePairwiseOnDemand]: 56/58 looper letters, 30 selfloop transitions, 1 changer transitions 2/48 dead transitions. [2024-11-28 02:07:27,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 195 flow [2024-11-28 02:07:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-28 02:07:27,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2024-11-28 02:07:27,679 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 133 flow. Second operand 3 states and 91 transitions. [2024-11-28 02:07:27,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 195 flow [2024-11-28 02:07:27,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 191 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:27,685 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 124 flow [2024-11-28 02:07:27,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-28 02:07:27,686 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-28 02:07:27,689 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 124 flow [2024-11-28 02:07:27,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:27,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:27,689 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:27,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:27,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:27,890 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1657243551, now seen corresponding path program 1 times [2024-11-28 02:07:27,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:27,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271708345] [2024-11-28 02:07:27,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:27,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:27,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:27,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:27,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:07:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:28,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:07:28,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:28,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:28,057 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:28,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271708345] [2024-11-28 02:07:28,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271708345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:28,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:28,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:28,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014725516] [2024-11-28 02:07:28,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:28,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:28,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:28,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:28,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:28,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-28 02:07:28,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:28,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:28,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-28 02:07:28,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:28,721 INFO L124 PetriNetUnfolderBase]: 1101/2170 cut-off events. [2024-11-28 02:07:28,721 INFO L125 PetriNetUnfolderBase]: For 393/425 co-relation queries the response was YES. [2024-11-28 02:07:28,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4299 conditions, 2170 events. 1101/2170 cut-off events. For 393/425 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12308 event pairs, 484 based on Foata normal form. 0/2092 useless extension candidates. Maximal degree in co-relation 4288. Up to 1037 conditions per place. [2024-11-28 02:07:28,737 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 46 selfloop transitions, 4 changer transitions 2/66 dead transitions. [2024-11-28 02:07:28,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 284 flow [2024-11-28 02:07:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-28 02:07:28,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-11-28 02:07:28,740 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 124 flow. Second operand 3 states and 110 transitions. [2024-11-28 02:07:28,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 284 flow [2024-11-28 02:07:28,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:28,747 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 149 flow [2024-11-28 02:07:28,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-28 02:07:28,748 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-28 02:07:28,749 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 149 flow [2024-11-28 02:07:28,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:28,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:28,749 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:28,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:28,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:28,953 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:28,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash 361664795, now seen corresponding path program 1 times [2024-11-28 02:07:28,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:28,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454832304] [2024-11-28 02:07:28,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:28,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:28,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:28,957 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:28,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:07:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:29,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:07:29,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:29,138 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:29,139 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:29,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454832304] [2024-11-28 02:07:29,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454832304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:29,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:29,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854357591] [2024-11-28 02:07:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:29,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:29,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:29,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:29,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-28 02:07:29,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:29,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:29,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-28 02:07:29,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:29,626 INFO L124 PetriNetUnfolderBase]: 1020/2017 cut-off events. [2024-11-28 02:07:29,626 INFO L125 PetriNetUnfolderBase]: For 286/298 co-relation queries the response was YES. [2024-11-28 02:07:29,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 2017 events. 1020/2017 cut-off events. For 286/298 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10016 event pairs, 415 based on Foata normal form. 0/1947 useless extension candidates. Maximal degree in co-relation 4004. Up to 1094 conditions per place. [2024-11-28 02:07:29,636 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 41 selfloop transitions, 3 changer transitions 2/61 dead transitions. [2024-11-28 02:07:29,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 267 flow [2024-11-28 02:07:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-28 02:07:29,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2024-11-28 02:07:29,637 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 149 flow. Second operand 3 states and 105 transitions. [2024-11-28 02:07:29,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 267 flow [2024-11-28 02:07:29,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 257 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:29,644 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 153 flow [2024-11-28 02:07:29,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-28 02:07:29,645 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-28 02:07:29,645 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 153 flow [2024-11-28 02:07:29,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:29,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:29,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:29,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:07:29,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:29,850 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:29,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1855206246, now seen corresponding path program 1 times [2024-11-28 02:07:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:29,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781845208] [2024-11-28 02:07:29,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:29,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:29,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:29,853 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:29,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:07:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:29,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:07:29,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:30,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 02:07:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:30,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:30,061 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:30,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781845208] [2024-11-28 02:07:30,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781845208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:30,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:30,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:30,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731644654] [2024-11-28 02:07:30,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:30,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:30,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:30,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:30,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:30,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:30,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:30,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:30,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:30,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:30,473 INFO L124 PetriNetUnfolderBase]: 663/1503 cut-off events. [2024-11-28 02:07:30,473 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-11-28 02:07:30,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2958 conditions, 1503 events. 663/1503 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7141 event pairs, 220 based on Foata normal form. 76/1550 useless extension candidates. Maximal degree in co-relation 2944. Up to 618 conditions per place. [2024-11-28 02:07:30,483 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 37 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-28 02:07:30,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 257 flow [2024-11-28 02:07:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:07:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-28 02:07:30,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-28 02:07:30,485 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 153 flow. Second operand 3 states and 104 transitions. [2024-11-28 02:07:30,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 257 flow [2024-11-28 02:07:30,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:07:30,489 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 155 flow [2024-11-28 02:07:30,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-28 02:07:30,491 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-28 02:07:30,491 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 155 flow [2024-11-28 02:07:30,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:30,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:30,491 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:30,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:30,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:30,692 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:30,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash -91169377, now seen corresponding path program 1 times [2024-11-28 02:07:30,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:30,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729417536] [2024-11-28 02:07:30,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:30,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:30,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:30,698 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:30,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:07:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:30,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:07:30,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:31,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:31,552 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:31,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729417536] [2024-11-28 02:07:31,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729417536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:31,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:31,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:31,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822903060] [2024-11-28 02:07:31,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:31,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:31,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:31,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:31,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:07:31,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:31,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:31,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:07:31,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:32,317 INFO L124 PetriNetUnfolderBase]: 1336/2884 cut-off events. [2024-11-28 02:07:32,318 INFO L125 PetriNetUnfolderBase]: For 638/642 co-relation queries the response was YES. [2024-11-28 02:07:32,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6048 conditions, 2884 events. 1336/2884 cut-off events. For 638/642 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15778 event pairs, 724 based on Foata normal form. 0/2787 useless extension candidates. Maximal degree in co-relation 6034. Up to 1100 conditions per place. [2024-11-28 02:07:32,336 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 78 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-28 02:07:32,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 479 flow [2024-11-28 02:07:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:07:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-28 02:07:32,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6681034482758621 [2024-11-28 02:07:32,338 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 155 flow. Second operand 4 states and 155 transitions. [2024-11-28 02:07:32,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 479 flow [2024-11-28 02:07:32,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 96 transitions, 467 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:32,343 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 167 flow [2024-11-28 02:07:32,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-11-28 02:07:32,344 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-28 02:07:32,344 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 167 flow [2024-11-28 02:07:32,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:32,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:32,345 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:32,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:07:32,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:32,547 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:32,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2006279539, now seen corresponding path program 1 times [2024-11-28 02:07:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:32,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714676613] [2024-11-28 02:07:32,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:32,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:32,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:32,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:32,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:07:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:32,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:07:32,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:33,024 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:33,024 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:33,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714676613] [2024-11-28 02:07:33,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714676613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:33,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:33,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:33,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992185279] [2024-11-28 02:07:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:33,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:33,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:33,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:33,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-28 02:07:33,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:33,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:33,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-28 02:07:33,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:33,646 INFO L124 PetriNetUnfolderBase]: 937/2048 cut-off events. [2024-11-28 02:07:33,647 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2024-11-28 02:07:33,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4177 conditions, 2048 events. 937/2048 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10115 event pairs, 422 based on Foata normal form. 7/2013 useless extension candidates. Maximal degree in co-relation 4160. Up to 1045 conditions per place. [2024-11-28 02:07:33,659 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 53 selfloop transitions, 3 changer transitions 3/76 dead transitions. [2024-11-28 02:07:33,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 76 transitions, 356 flow [2024-11-28 02:07:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:07:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-28 02:07:33,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6120689655172413 [2024-11-28 02:07:33,661 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 167 flow. Second operand 4 states and 142 transitions. [2024-11-28 02:07:33,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 76 transitions, 356 flow [2024-11-28 02:07:33,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:33,666 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 177 flow [2024-11-28 02:07:33,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-11-28 02:07:33,669 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-28 02:07:33,669 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 177 flow [2024-11-28 02:07:33,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:33,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:33,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:33,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:07:33,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:33,871 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:33,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:33,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2035508804, now seen corresponding path program 1 times [2024-11-28 02:07:33,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:33,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679911903] [2024-11-28 02:07:33,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:33,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:33,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:33,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:33,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:07:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:34,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:07:34,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:34,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 02:07:35,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-28 02:07:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:35,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:35,127 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679911903] [2024-11-28 02:07:35,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679911903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:35,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:35,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:07:35,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420333696] [2024-11-28 02:07:35,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:35,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:07:35,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:35,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:07:35,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:35,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:07:35,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 177 flow. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:35,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:35,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:07:35,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:37,018 INFO L124 PetriNetUnfolderBase]: 1096/2371 cut-off events. [2024-11-28 02:07:37,019 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2024-11-28 02:07:37,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4936 conditions, 2371 events. 1096/2371 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12249 event pairs, 450 based on Foata normal form. 27/2356 useless extension candidates. Maximal degree in co-relation 4916. Up to 1398 conditions per place. [2024-11-28 02:07:37,059 INFO L140 encePairwiseOnDemand]: 44/58 looper letters, 81 selfloop transitions, 14 changer transitions 17/127 dead transitions. [2024-11-28 02:07:37,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 127 transitions, 621 flow [2024-11-28 02:07:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:07:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 02:07:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 322 transitions. [2024-11-28 02:07:37,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5047021943573667 [2024-11-28 02:07:37,062 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 177 flow. Second operand 11 states and 322 transitions. [2024-11-28 02:07:37,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 127 transitions, 621 flow [2024-11-28 02:07:37,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 127 transitions, 612 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:07:37,067 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 289 flow [2024-11-28 02:07:37,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=289, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-11-28 02:07:37,068 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-28 02:07:37,068 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 289 flow [2024-11-28 02:07:37,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:37,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:37,069 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:37,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:07:37,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:37,273 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:37,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1487370202, now seen corresponding path program 2 times [2024-11-28 02:07:37,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:37,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779929347] [2024-11-28 02:07:37,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:37,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:37,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:37,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:07:37,429 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:07:37,430 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:37,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:07:37,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:37,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 02:07:38,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-28 02:07:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:38,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:38,448 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:38,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779929347] [2024-11-28 02:07:38,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779929347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:38,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:38,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:07:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673664373] [2024-11-28 02:07:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:38,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:07:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:38,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:07:38,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:38,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:07:38,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:38,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:38,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:07:38,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:40,151 INFO L124 PetriNetUnfolderBase]: 1235/2691 cut-off events. [2024-11-28 02:07:40,151 INFO L125 PetriNetUnfolderBase]: For 2663/2663 co-relation queries the response was YES. [2024-11-28 02:07:40,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 2691 events. 1235/2691 cut-off events. For 2663/2663 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 14555 event pairs, 497 based on Foata normal form. 31/2675 useless extension candidates. Maximal degree in co-relation 7262. Up to 1664 conditions per place. [2024-11-28 02:07:40,170 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 89 selfloop transitions, 20 changer transitions 10/134 dead transitions. [2024-11-28 02:07:40,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 843 flow [2024-11-28 02:07:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:07:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 02:07:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 320 transitions. [2024-11-28 02:07:40,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5015673981191222 [2024-11-28 02:07:40,173 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 289 flow. Second operand 11 states and 320 transitions. [2024-11-28 02:07:40,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 134 transitions, 843 flow [2024-11-28 02:07:40,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 134 transitions, 828 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:07:40,191 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 500 flow [2024-11-28 02:07:40,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=500, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-11-28 02:07:40,192 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-11-28 02:07:40,193 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 500 flow [2024-11-28 02:07:40,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:40,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:40,193 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:40,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:07:40,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:40,397 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:40,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1136966728, now seen corresponding path program 3 times [2024-11-28 02:07:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:40,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889920903] [2024-11-28 02:07:40,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:07:40,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:40,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:40,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:07:40,550 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:07:40,550 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:40,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:07:40,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:41,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 02:07:41,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-28 02:07:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:41,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:41,382 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:41,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889920903] [2024-11-28 02:07:41,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889920903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:41,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:41,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:07:41,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185669583] [2024-11-28 02:07:41,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:41,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:07:41,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:41,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:07:41,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:41,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:07:41,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 500 flow. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:41,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:41,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:07:41,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:43,319 INFO L124 PetriNetUnfolderBase]: 1395/3052 cut-off events. [2024-11-28 02:07:43,320 INFO L125 PetriNetUnfolderBase]: For 6659/6663 co-relation queries the response was YES. [2024-11-28 02:07:43,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9372 conditions, 3052 events. 1395/3052 cut-off events. For 6659/6663 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 17010 event pairs, 470 based on Foata normal form. 13/3031 useless extension candidates. Maximal degree in co-relation 9338. Up to 1934 conditions per place. [2024-11-28 02:07:43,337 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 108 selfloop transitions, 20 changer transitions 4/147 dead transitions. [2024-11-28 02:07:43,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 147 transitions, 1088 flow [2024-11-28 02:07:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:07:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 02:07:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 317 transitions. [2024-11-28 02:07:43,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49686520376175547 [2024-11-28 02:07:43,340 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 500 flow. Second operand 11 states and 317 transitions. [2024-11-28 02:07:43,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 147 transitions, 1088 flow [2024-11-28 02:07:43,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1014 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-28 02:07:43,368 INFO L231 Difference]: Finished difference. Result has 106 places, 90 transitions, 631 flow [2024-11-28 02:07:43,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=631, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2024-11-28 02:07:43,369 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-11-28 02:07:43,369 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 631 flow [2024-11-28 02:07:43,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:43,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:43,370 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:43,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:43,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:43,574 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:43,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1802000342, now seen corresponding path program 4 times [2024-11-28 02:07:43,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:43,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891371472] [2024-11-28 02:07:43,575 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:07:43,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:43,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:43,579 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:43,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:07:43,784 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:07:43,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:43,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:07:43,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:44,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 02:07:44,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-28 02:07:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:44,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:44,566 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:07:44,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891371472] [2024-11-28 02:07:44,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891371472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:44,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:44,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:07:44,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68832111] [2024-11-28 02:07:44,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:44,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:07:44,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:07:44,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:07:44,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:44,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-28 02:07:44,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 631 flow. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:44,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:07:44,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-28 02:07:44,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:07:46,360 INFO L124 PetriNetUnfolderBase]: 1539/3354 cut-off events. [2024-11-28 02:07:46,360 INFO L125 PetriNetUnfolderBase]: For 8052/8062 co-relation queries the response was YES. [2024-11-28 02:07:46,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10571 conditions, 3354 events. 1539/3354 cut-off events. For 8052/8062 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19239 event pairs, 318 based on Foata normal form. 17/3337 useless extension candidates. Maximal degree in co-relation 10530. Up to 1245 conditions per place. [2024-11-28 02:07:46,374 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 97 selfloop transitions, 52 changer transitions 11/175 dead transitions. [2024-11-28 02:07:46,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 175 transitions, 1341 flow [2024-11-28 02:07:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:07:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:07:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 397 transitions. [2024-11-28 02:07:46,377 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48891625615763545 [2024-11-28 02:07:46,377 INFO L175 Difference]: Start difference. First operand has 106 places, 90 transitions, 631 flow. Second operand 14 states and 397 transitions. [2024-11-28 02:07:46,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 175 transitions, 1341 flow [2024-11-28 02:07:46,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 175 transitions, 1295 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-11-28 02:07:46,402 INFO L231 Difference]: Finished difference. Result has 123 places, 99 transitions, 849 flow [2024-11-28 02:07:46,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=849, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2024-11-28 02:07:46,403 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-11-28 02:07:46,404 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 849 flow [2024-11-28 02:07:46,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:46,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:07:46,404 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:46,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:07:46,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:46,608 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:07:46,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash 787618418, now seen corresponding path program 1 times [2024-11-28 02:07:46,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:07:46,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489060282] [2024-11-28 02:07:46,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:46,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:46,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:46,612 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:46,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:07:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:46,762 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:07:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:07:46,895 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 02:07:46,895 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:07:46,896 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2024-11-28 02:07:46,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-28 02:07:46,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 15 remaining) [2024-11-28 02:07:46,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 15 remaining) [2024-11-28 02:07:46,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-28 02:07:46,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-28 02:07:46,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2024-11-28 02:07:46,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-28 02:07:46,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-28 02:07:46,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 15 remaining) [2024-11-28 02:07:46,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-28 02:07:46,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-28 02:07:46,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-28 02:07:46,901 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-28 02:07:46,901 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2024-11-28 02:07:46,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:07:47,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:47,102 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:47,170 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:07:47,170 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:07:47,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:07:47 BasicIcfg [2024-11-28 02:07:47,178 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:07:47,182 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:07:47,183 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:07:47,183 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:07:47,184 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:23" (3/4) ... [2024-11-28 02:07:47,187 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:07:47,188 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:07:47,189 INFO L158 Benchmark]: Toolchain (without parser) took 25784.46ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 92.3MB in the beginning and 94.4MB in the end (delta: -2.2MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2024-11-28 02:07:47,189 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 83.9MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:47,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 737.03ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 70.1MB in the end (delta: 21.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:07:47,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.15ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 67.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:47,190 INFO L158 Benchmark]: Boogie Preprocessor took 92.87ms. Allocated memory is still 117.4MB. Free memory was 67.9MB in the beginning and 65.1MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:07:47,190 INFO L158 Benchmark]: RCFGBuilder took 1035.51ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 45.1MB in the end (delta: 20.0MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2024-11-28 02:07:47,191 INFO L158 Benchmark]: TraceAbstraction took 23823.60ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 44.3MB in the beginning and 94.5MB in the end (delta: -50.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2024-11-28 02:07:47,192 INFO L158 Benchmark]: Witness Printer took 5.75ms. Allocated memory is still 184.5MB. Free memory was 94.5MB in the beginning and 94.4MB in the end (delta: 14.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:07:47,193 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 83.9MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 737.03ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 70.1MB in the end (delta: 21.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.15ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 67.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 92.87ms. Allocated memory is still 117.4MB. Free memory was 67.9MB in the beginning and 65.1MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1035.51ms. Allocated memory is still 117.4MB. Free memory was 65.1MB in the beginning and 45.1MB in the end (delta: 20.0MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * TraceAbstraction took 23823.60ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 44.3MB in the beginning and 94.5MB in the end (delta: -50.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 5.75ms. Allocated memory is still 184.5MB. Free memory was 94.5MB in the beginning and 94.4MB in the end (delta: 14.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 681]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 681. Possible FailurePath: [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1=-1, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1=-1, id2=0, m={4:0}, next=0, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L709] 1 buffer[next] = b [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] CALL 2 reach_error() [L681] COND FALSE 2 !(0) VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L681] 2 __assert_fail ("0", "", 0, __extension__ __PRETTY_FUNCTION__) VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: 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: 762]: 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: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 681]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 15 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: 23.6s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 914 SdHoareTripleChecker+Valid, 7.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 807 mSDsluCounter, 388 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 370 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3402 IncrementalHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 18 mSDtfsCounter, 3402 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=849occurred in iteration=13, InterpolantAutomatonStates: 77, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 281 NumberOfCodeBlocks, 281 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 3059 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1333 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 6/6 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 [2024-11-28 02:07:47,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bece390-1d47-4a52-8a3b-ef7ae79f6809/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample