./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.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_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/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_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/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_34067de5-08ea-4d03-8f77-e05f891ebcb0/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 68b918b5051efa1a4363a7cd528e42e31cd4f687fef5116849d37b2131e9c46c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:22:09,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:22:09,656 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:22:09,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:22:09,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:22:09,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:22:09,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:22:09,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:22:09,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:22:09,704 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:22:09,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:22:09,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:22:09,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:22:09,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:22:09,706 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:22:09,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:22:09,708 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:22:09,709 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:09,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:22:09,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:09,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:09,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:09,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:09,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:22:09,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:22:09,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:22:09,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:22:09,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:22:09,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:22:09,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:22:09,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:22:09,713 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_34067de5-08ea-4d03-8f77-e05f891ebcb0/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 -> 68b918b5051efa1a4363a7cd528e42e31cd4f687fef5116849d37b2131e9c46c [2024-11-28 02:22:10,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:22:10,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:22:10,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:22:10,093 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:22:10,094 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:22:10,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i [2024-11-28 02:22:13,258 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data/546793255/e54308ba019a4cdfa1c75d73b978e446/FLAGcde2532f1 [2024-11-28 02:22:13,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:22:13,633 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i [2024-11-28 02:22:13,666 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data/546793255/e54308ba019a4cdfa1c75d73b978e446/FLAGcde2532f1 [2024-11-28 02:22:13,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data/546793255/e54308ba019a4cdfa1c75d73b978e446 [2024-11-28 02:22:13,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:22:13,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:22:13,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:13,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:22:13,696 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:22:13,697 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:13" (1/1) ... [2024-11-28 02:22:13,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2da258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:13, skipping insertion in model container [2024-11-28 02:22:13,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:13" (1/1) ... [2024-11-28 02:22:13,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:22:14,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:14,638 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:22:14,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:14,807 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:22:14,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14 WrapperNode [2024-11-28 02:22:14,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:14,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:14,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:22:14,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:22:14,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,875 INFO L138 Inliner]: procedures = 368, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 129 [2024-11-28 02:22:14,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:14,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:22:14,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:22:14,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:22:14,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,906 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [5, 12]. 71 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0]. The 9 writes are split as follows [0, 9]. [2024-11-28 02:22:14,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,920 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:22:14,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:22:14,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:22:14,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:22:14,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (1/1) ... [2024-11-28 02:22:14,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:14,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:14,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:14,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:22:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:22:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:22:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:22:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:22:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:22:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:22:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:22:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:22:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:22:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:22:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:22:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:22:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:22:15,022 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:22:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:22:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:22:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:22:15,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:22:15,024 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 02:22:15,226 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:22:15,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:22:15,724 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:22:15,724 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:22:16,060 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:22:16,061 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:22:16,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:16 BoogieIcfgContainer [2024-11-28 02:22:16,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:22:16,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:22:16,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:22:16,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:22:16,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:22:13" (1/3) ... [2024-11-28 02:22:16,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309c94db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:16, skipping insertion in model container [2024-11-28 02:22:16,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:14" (2/3) ... [2024-11-28 02:22:16,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309c94db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:16, skipping insertion in model container [2024-11-28 02:22:16,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:16" (3/3) ... [2024-11-28 02:22:16,075 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_02-list_nr.i [2024-11-28 02:22:16,091 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:22:16,092 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_02-list_nr.i that has 2 procedures, 52 locations, 1 initial locations, 0 loop locations, and 25 error locations. [2024-11-28 02:22:16,093 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:22:16,179 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:22:16,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 106 flow [2024-11-28 02:22:16,285 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-11-28 02:22:16,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:22:16,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-11-28 02:22:16,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 51 transitions, 106 flow [2024-11-28 02:22:16,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 103 flow [2024-11-28 02:22:16,306 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:22:16,321 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;@45018350, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:22:16,322 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-28 02:22:16,327 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:22:16,327 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-28 02:22:16,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:22:16,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:16,328 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 02:22:16,329 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:16,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 11213, now seen corresponding path program 1 times [2024-11-28 02:22:16,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:16,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732369016] [2024-11-28 02:22:16,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:16,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:16,787 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 02:22:16,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:16,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732369016] [2024-11-28 02:22:16,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732369016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:16,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:16,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:22:16,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447887487] [2024-11-28 02:22:16,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:16,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:16,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:16,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:16,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:16,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 51 [2024-11-28 02:22:16,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 02:22:16,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:16,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 51 [2024-11-28 02:22:16,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:17,106 INFO L124 PetriNetUnfolderBase]: 42/177 cut-off events. [2024-11-28 02:22:17,106 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:22:17,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 177 events. 42/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 778 event pairs, 42 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 261. Up to 101 conditions per place. [2024-11-28 02:22:17,113 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 18 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-11-28 02:22:17,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 135 flow [2024-11-28 02:22:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:17,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:17,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-28 02:22:17,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-11-28 02:22:17,132 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 103 flow. Second operand 3 states and 105 transitions. [2024-11-28 02:22:17,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 135 flow [2024-11-28 02:22:17,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:17,143 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 98 flow [2024-11-28 02:22:17,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-28 02:22:17,153 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-11-28 02:22:17,153 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 98 flow [2024-11-28 02:22:17,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 02:22:17,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:17,154 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 02:22:17,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:22:17,154 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:17,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash 11214, now seen corresponding path program 1 times [2024-11-28 02:22:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794020271] [2024-11-28 02:22:17,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:17,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:17,500 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 02:22:17,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794020271] [2024-11-28 02:22:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794020271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:17,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:17,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:22:17,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584225555] [2024-11-28 02:22:17,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:17,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:17,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:17,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:17,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2024-11-28 02:22:17,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 02:22:17,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:17,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2024-11-28 02:22:17,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:17,723 INFO L124 PetriNetUnfolderBase]: 42/173 cut-off events. [2024-11-28 02:22:17,725 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:22:17,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 173 events. 42/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 777 event pairs, 42 based on Foata normal form. 3/139 useless extension candidates. Maximal degree in co-relation 269. Up to 101 conditions per place. [2024-11-28 02:22:17,728 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 16 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-28 02:22:17,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 126 flow [2024-11-28 02:22:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-28 02:22:17,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7124183006535948 [2024-11-28 02:22:17,736 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 98 flow. Second operand 3 states and 109 transitions. [2024-11-28 02:22:17,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 126 flow [2024-11-28 02:22:17,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:17,738 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 90 flow [2024-11-28 02:22:17,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-28 02:22:17,739 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2024-11-28 02:22:17,740 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 90 flow [2024-11-28 02:22:17,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 02:22:17,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:17,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:22:17,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:22:17,741 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:17,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:17,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1774899415, now seen corresponding path program 1 times [2024-11-28 02:22:17,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:17,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078144870] [2024-11-28 02:22:17,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:17,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:17,996 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 02:22:17,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078144870] [2024-11-28 02:22:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078144870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:17,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:17,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:22:17,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948245070] [2024-11-28 02:22:17,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:17,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:22:17,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:18,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:22:18,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:18,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-28 02:22:18,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:18,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:18,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-28 02:22:18,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:18,285 INFO L124 PetriNetUnfolderBase]: 49/180 cut-off events. [2024-11-28 02:22:18,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:22:18,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 180 events. 49/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 756 event pairs, 49 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 291. Up to 115 conditions per place. [2024-11-28 02:22:18,288 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 19 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-11-28 02:22:18,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 124 flow [2024-11-28 02:22:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:22:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:22:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-28 02:22:18,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.553921568627451 [2024-11-28 02:22:18,290 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 90 flow. Second operand 4 states and 113 transitions. [2024-11-28 02:22:18,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 124 flow [2024-11-28 02:22:18,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:18,291 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 82 flow [2024-11-28 02:22:18,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-11-28 02:22:18,292 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2024-11-28 02:22:18,292 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 82 flow [2024-11-28 02:22:18,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:18,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:18,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:22:18,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:22:18,293 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:18,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1774899416, now seen corresponding path program 1 times [2024-11-28 02:22:18,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:18,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719504409] [2024-11-28 02:22:18,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:18,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:18,603 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 02:22:18,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:18,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719504409] [2024-11-28 02:22:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719504409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:18,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:18,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:22:18,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887795215] [2024-11-28 02:22:18,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:18,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:22:18,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:18,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:22:18,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:22:18,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2024-11-28 02:22:18,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:18,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:18,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2024-11-28 02:22:18,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:18,785 INFO L124 PetriNetUnfolderBase]: 42/149 cut-off events. [2024-11-28 02:22:18,785 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:22:18,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 149 events. 42/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 583 event pairs, 42 based on Foata normal form. 8/136 useless extension candidates. Maximal degree in co-relation 245. Up to 100 conditions per place. [2024-11-28 02:22:18,787 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 16 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-11-28 02:22:18,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 110 flow [2024-11-28 02:22:18,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:22:18,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:22:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-28 02:22:18,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-11-28 02:22:18,789 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 82 flow. Second operand 4 states and 138 transitions. [2024-11-28 02:22:18,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 110 flow [2024-11-28 02:22:18,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 107 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:18,790 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 75 flow [2024-11-28 02:22:18,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-11-28 02:22:18,791 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -13 predicate places. [2024-11-28 02:22:18,791 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 75 flow [2024-11-28 02:22:18,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:18,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:18,792 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:18,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:22:18,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:18,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash 686521503, now seen corresponding path program 1 times [2024-11-28 02:22:18,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:18,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614276449] [2024-11-28 02:22:18,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:18,962 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 02:22:18,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:18,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614276449] [2024-11-28 02:22:18,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614276449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:18,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:18,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:18,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772243049] [2024-11-28 02:22:18,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:18,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:18,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:18,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:18,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:19,007 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 51 [2024-11-28 02:22:19,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:19,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:19,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 51 [2024-11-28 02:22:19,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:19,086 INFO L124 PetriNetUnfolderBase]: 49/160 cut-off events. [2024-11-28 02:22:19,086 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:22:19,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 160 events. 49/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 613 event pairs, 31 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 271. Up to 88 conditions per place. [2024-11-28 02:22:19,092 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 24 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-28 02:22:19,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 137 flow [2024-11-28 02:22:19,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-11-28 02:22:19,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7712418300653595 [2024-11-28 02:22:19,093 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 75 flow. Second operand 3 states and 118 transitions. [2024-11-28 02:22:19,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 137 flow [2024-11-28 02:22:19,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:19,095 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 72 flow [2024-11-28 02:22:19,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-11-28 02:22:19,095 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -15 predicate places. [2024-11-28 02:22:19,096 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 72 flow [2024-11-28 02:22:19,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:19,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:19,096 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:19,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:22:19,096 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:19,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash 686521504, now seen corresponding path program 1 times [2024-11-28 02:22:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:19,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040483146] [2024-11-28 02:22:19,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:19,299 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 02:22:19,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:19,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040483146] [2024-11-28 02:22:19,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040483146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:19,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:19,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175805916] [2024-11-28 02:22:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:19,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:19,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:19,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:19,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:19,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 51 [2024-11-28 02:22:19,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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 02:22:19,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:19,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 51 [2024-11-28 02:22:19,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:19,422 INFO L124 PetriNetUnfolderBase]: 42/139 cut-off events. [2024-11-28 02:22:19,422 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 02:22:19,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 139 events. 42/139 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 514 event pairs, 26 based on Foata normal form. 16/142 useless extension candidates. Maximal degree in co-relation 251. Up to 88 conditions per place. [2024-11-28 02:22:19,423 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 23 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-28 02:22:19,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 132 flow [2024-11-28 02:22:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-28 02:22:19,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2024-11-28 02:22:19,425 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 72 flow. Second operand 3 states and 120 transitions. [2024-11-28 02:22:19,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 132 flow [2024-11-28 02:22:19,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:19,426 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 68 flow [2024-11-28 02:22:19,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2024-11-28 02:22:19,427 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -17 predicate places. [2024-11-28 02:22:19,427 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 68 flow [2024-11-28 02:22:19,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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 02:22:19,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:19,427 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:19,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:22:19,427 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:19,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash -511232776, now seen corresponding path program 1 times [2024-11-28 02:22:19,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:19,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275359432] [2024-11-28 02:22:19,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:19,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:19,745 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 02:22:19,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:19,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275359432] [2024-11-28 02:22:19,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275359432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:19,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:19,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:22:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121595080] [2024-11-28 02:22:19,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:19,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:22:19,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:19,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:22:19,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:22:19,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-28 02:22:19,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 02:22:19,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:19,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-28 02:22:19,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:20,115 INFO L124 PetriNetUnfolderBase]: 77/214 cut-off events. [2024-11-28 02:22:20,115 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-28 02:22:20,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 214 events. 77/214 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 836 event pairs, 6 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 403. Up to 107 conditions per place. [2024-11-28 02:22:20,120 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 32 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2024-11-28 02:22:20,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 188 flow [2024-11-28 02:22:20,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:22:20,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:22:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-11-28 02:22:20,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5915032679738562 [2024-11-28 02:22:20,123 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 68 flow. Second operand 6 states and 181 transitions. [2024-11-28 02:22:20,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 188 flow [2024-11-28 02:22:20,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:20,127 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 112 flow [2024-11-28 02:22:20,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-11-28 02:22:20,128 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2024-11-28 02:22:20,130 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 112 flow [2024-11-28 02:22:20,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 02:22:20,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:20,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:20,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:22:20,131 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:20,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash -511232775, now seen corresponding path program 1 times [2024-11-28 02:22:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:20,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037823571] [2024-11-28 02:22:20,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:20,634 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 02:22:20,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:20,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037823571] [2024-11-28 02:22:20,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037823571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:20,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:20,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:20,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917931991] [2024-11-28 02:22:20,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:20,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:22:20,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:20,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:22:20,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:22:20,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 51 [2024-11-28 02:22:20,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:20,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:20,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 51 [2024-11-28 02:22:20,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:20,910 INFO L124 PetriNetUnfolderBase]: 98/265 cut-off events. [2024-11-28 02:22:20,911 INFO L125 PetriNetUnfolderBase]: For 82/84 co-relation queries the response was YES. [2024-11-28 02:22:20,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 265 events. 98/265 cut-off events. For 82/84 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1148 event pairs, 6 based on Foata normal form. 12/270 useless extension candidates. Maximal degree in co-relation 594. Up to 101 conditions per place. [2024-11-28 02:22:20,913 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 37 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2024-11-28 02:22:20,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 238 flow [2024-11-28 02:22:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:22:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:22:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-11-28 02:22:20,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7098039215686275 [2024-11-28 02:22:20,915 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 112 flow. Second operand 5 states and 181 transitions. [2024-11-28 02:22:20,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 238 flow [2024-11-28 02:22:20,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:20,917 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 144 flow [2024-11-28 02:22:20,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2024-11-28 02:22:20,918 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2024-11-28 02:22:20,918 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 144 flow [2024-11-28 02:22:20,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:20,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:20,919 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:20,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:22:20,919 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:20,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash -281055724, now seen corresponding path program 1 times [2024-11-28 02:22:20,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:20,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405451881] [2024-11-28 02:22:20,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:20,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:21,696 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 02:22:21,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:21,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405451881] [2024-11-28 02:22:21,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405451881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:21,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:21,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:22:21,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761349074] [2024-11-28 02:22:21,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:21,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:22:21,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:21,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:22:21,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:22:22,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-11-28 02:22:22,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 144 flow. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:22,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:22,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-11-28 02:22:22,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:22,302 INFO L124 PetriNetUnfolderBase]: 106/293 cut-off events. [2024-11-28 02:22:22,302 INFO L125 PetriNetUnfolderBase]: For 248/254 co-relation queries the response was YES. [2024-11-28 02:22:22,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 293 events. 106/293 cut-off events. For 248/254 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1312 event pairs, 19 based on Foata normal form. 8/289 useless extension candidates. Maximal degree in co-relation 725. Up to 77 conditions per place. [2024-11-28 02:22:22,305 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 42 selfloop transitions, 19 changer transitions 0/67 dead transitions. [2024-11-28 02:22:22,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 400 flow [2024-11-28 02:22:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:22:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:22:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-11-28 02:22:22,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-11-28 02:22:22,306 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 144 flow. Second operand 9 states and 207 transitions. [2024-11-28 02:22:22,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 400 flow [2024-11-28 02:22:22,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:22:22,310 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 261 flow [2024-11-28 02:22:22,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=261, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-28 02:22:22,311 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-11-28 02:22:22,311 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 261 flow [2024-11-28 02:22:22,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:22,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:22,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:22,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:22:22,312 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:22,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:22,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1666337225, now seen corresponding path program 1 times [2024-11-28 02:22:22,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:22,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361058744] [2024-11-28 02:22:22,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:22,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:22,850 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 02:22:22,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361058744] [2024-11-28 02:22:22,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361058744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:22,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:22,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:22:22,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726611084] [2024-11-28 02:22:22,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:22,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:22:22,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:22,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:22:22,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:22:23,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-11-28 02:22:23,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 261 flow. Second operand has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 02:22:23,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:23,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-11-28 02:22:23,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:23,574 INFO L124 PetriNetUnfolderBase]: 106/292 cut-off events. [2024-11-28 02:22:23,575 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-11-28 02:22:23,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 292 events. 106/292 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1294 event pairs, 19 based on Foata normal form. 8/288 useless extension candidates. Maximal degree in co-relation 829. Up to 77 conditions per place. [2024-11-28 02:22:23,577 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 43 selfloop transitions, 21 changer transitions 0/70 dead transitions. [2024-11-28 02:22:23,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 465 flow [2024-11-28 02:22:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:22:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 02:22:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-11-28 02:22:23,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44509803921568625 [2024-11-28 02:22:23,579 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 261 flow. Second operand 10 states and 227 transitions. [2024-11-28 02:22:23,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 465 flow [2024-11-28 02:22:23,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:23,585 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 338 flow [2024-11-28 02:22:23,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-11-28 02:22:23,586 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-11-28 02:22:23,586 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 338 flow [2024-11-28 02:22:23,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 02:22:23,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:23,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:23,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:22:23,587 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:23,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash -181198757, now seen corresponding path program 1 times [2024-11-28 02:22:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677018485] [2024-11-28 02:22:23,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:23,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:23,643 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:22:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:23,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:22:23,687 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:22:23,687 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (35 of 36 remaining) [2024-11-28 02:22:23,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 36 remaining) [2024-11-28 02:22:23,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 36 remaining) [2024-11-28 02:22:23,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 36 remaining) [2024-11-28 02:22:23,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 36 remaining) [2024-11-28 02:22:23,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 36 remaining) [2024-11-28 02:22:23,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 36 remaining) [2024-11-28 02:22:23,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 36 remaining) [2024-11-28 02:22:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 36 remaining) [2024-11-28 02:22:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 36 remaining) [2024-11-28 02:22:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 36 remaining) [2024-11-28 02:22:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 36 remaining) [2024-11-28 02:22:23,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 36 remaining) [2024-11-28 02:22:23,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:22:23,692 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:23,724 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:22:23,725 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:22:23,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:22:23 BasicIcfg [2024-11-28 02:22:23,730 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:22:23,730 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:22:23,730 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:22:23,731 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:22:23,731 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:16" (3/4) ... [2024-11-28 02:22:23,733 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:22:23,734 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:22:23,735 INFO L158 Benchmark]: Toolchain (without parser) took 10045.19ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 92.2MB in the beginning and 306.1MB in the end (delta: -213.9MB). Peak memory consumption was 96.6MB. Max. memory is 16.1GB. [2024-11-28 02:22:23,735 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:22:23,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1117.99ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 53.7MB in the end (delta: 38.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-28 02:22:23,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.48ms. Allocated memory is still 117.4MB. Free memory was 53.7MB in the beginning and 51.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:22:23,735 INFO L158 Benchmark]: Boogie Preprocessor took 61.76ms. Allocated memory is still 117.4MB. Free memory was 51.1MB in the beginning and 48.5MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:22:23,736 INFO L158 Benchmark]: RCFGBuilder took 1123.14ms. Allocated memory is still 117.4MB. Free memory was 48.5MB in the beginning and 49.2MB in the end (delta: -693.8kB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-11-28 02:22:23,736 INFO L158 Benchmark]: TraceAbstraction took 7666.22ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 48.6MB in the beginning and 306.1MB in the end (delta: -257.4MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2024-11-28 02:22:23,736 INFO L158 Benchmark]: Witness Printer took 3.54ms. Allocated memory is still 427.8MB. Free memory was 306.1MB in the beginning and 306.1MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:22:23,738 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1117.99ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 53.7MB in the end (delta: 38.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.48ms. Allocated memory is still 117.4MB. Free memory was 53.7MB in the beginning and 51.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.76ms. Allocated memory is still 117.4MB. Free memory was 51.1MB in the beginning and 48.5MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1123.14ms. Allocated memory is still 117.4MB. Free memory was 48.5MB in the beginning and 49.2MB in the end (delta: -693.8kB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7666.22ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 48.6MB in the beginning and 306.1MB in the end (delta: -257.4MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. * Witness Printer took 3.54ms. Allocated memory is still 427.8MB. Free memory was 306.1MB in the beginning and 306.1MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1244]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1244. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1245] 0 pthread_t t1; [L1246] 0 struct s *p = malloc(sizeof(struct s)); [L1247] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={0:0}, A_mutex={1:0}] [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(p,9) [L1248] 0 A = malloc(sizeof(struct s)) [L1249] CALL 0 init(A,3) [L1228] 0 p -> datum = x VAL [A={-3:0}, A_mutex={1:0}] [L1229] 0 p -> next = ((void *)0) [L1249] RET 0 init(A,3) [L1250] 0 A->next = p [L1251] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-3:0}, A_mutex={1:0}, p={-2:0}, t1=-1] [L1253] EXPR 0 A->next [L1253] 0 p = A->next [L1254] 0 p->datum [L1256] 0 return 0; VAL [A={-3:0}, A_mutex={1:0}, \result=0, p={-2:0}, t1=-1] - 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: -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: -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: -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: -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: -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: -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: 1251]: 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: -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: -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: -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: -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 3 procedures, 74 locations, 36 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: 7.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1182 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 811 mSDsluCounter, 172 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 167 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2069 IncrementalHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 5 mSDtfsCounter, 2069 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred in iteration=10, InterpolantAutomatonStates: 50, 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, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 786 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 02:22:23,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/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_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/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_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/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_34067de5-08ea-4d03-8f77-e05f891ebcb0/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 68b918b5051efa1a4363a7cd528e42e31cd4f687fef5116849d37b2131e9c46c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:22:26,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:22:26,536 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 02:22:26,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:22:26,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:22:26,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:22:26,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:22:26,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:22:26,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:22:26,588 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:22:26,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:22:26,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:22:26,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:22:26,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:22:26,590 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:22:26,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:22:26,591 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:22:26,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:22:26,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:22:26,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:22:26,591 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:22:26,591 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:22:26,591 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:22:26,592 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:22:26,592 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:22:26,592 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:22:26,592 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:22:26,592 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:22:26,593 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:22:26,593 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:22:26,593 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:22:26,593 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:22:26,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:26,594 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:26,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:26,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:26,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:22:26,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:26,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:26,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:26,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:26,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:22:26,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:22:26,596 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:22:26,596 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:22:26,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:22:26,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:22:26,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:22:26,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:22:26,597 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_34067de5-08ea-4d03-8f77-e05f891ebcb0/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 -> 68b918b5051efa1a4363a7cd528e42e31cd4f687fef5116849d37b2131e9c46c [2024-11-28 02:22:26,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:22:26,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:22:26,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:22:26,946 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:22:26,946 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:22:26,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i [2024-11-28 02:22:30,008 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data/6df2070be/2eba5169b65e4c3cb3ecd60823c78b5b/FLAGac9db6127 [2024-11-28 02:22:30,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:22:30,397 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/sv-benchmarks/c/goblint-regression/09-regions_02-list_nr.i [2024-11-28 02:22:30,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data/6df2070be/2eba5169b65e4c3cb3ecd60823c78b5b/FLAGac9db6127 [2024-11-28 02:22:30,590 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/data/6df2070be/2eba5169b65e4c3cb3ecd60823c78b5b [2024-11-28 02:22:30,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:22:30,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:22:30,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:30,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:22:30,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:22:30,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:30" (1/1) ... [2024-11-28 02:22:30,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df3e245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:30, skipping insertion in model container [2024-11-28 02:22:30,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:30" (1/1) ... [2024-11-28 02:22:30,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:22:31,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:31,212 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:22:31,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:31,440 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:22:31,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31 WrapperNode [2024-11-28 02:22:31,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:31,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:31,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:22:31,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:22:31,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,521 INFO L138 Inliner]: procedures = 369, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2024-11-28 02:22:31,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:31,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:22:31,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:22:31,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:22:31,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,566 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [5, 12]. 71 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0]. The 9 writes are split as follows [0, 9]. [2024-11-28 02:22:31,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,577 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:22:31,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:22:31,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:22:31,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:22:31,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (1/1) ... [2024-11-28 02:22:31,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:31,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:31,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:31,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:22:31,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 02:22:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 02:22:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:22:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:22:31,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 02:22:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 02:22:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-28 02:22:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-28 02:22:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:22:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:22:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:22:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:22:31,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:22:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:22:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:22:31,651 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:22:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:22:31,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:22:31,653 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 02:22:31,841 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:22:31,843 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:22:32,413 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:22:32,413 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:22:32,727 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:22:32,728 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:22:32,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:32 BoogieIcfgContainer [2024-11-28 02:22:32,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:22:32,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:22:32,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:22:32,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:22:32,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:22:30" (1/3) ... [2024-11-28 02:22:32,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f3d259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:32, skipping insertion in model container [2024-11-28 02:22:32,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:31" (2/3) ... [2024-11-28 02:22:32,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f3d259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:32, skipping insertion in model container [2024-11-28 02:22:32,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:32" (3/3) ... [2024-11-28 02:22:32,742 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_02-list_nr.i [2024-11-28 02:22:32,759 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:22:32,760 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_02-list_nr.i that has 2 procedures, 52 locations, 1 initial locations, 0 loop locations, and 25 error locations. [2024-11-28 02:22:32,761 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:22:32,865 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:22:32,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 106 flow [2024-11-28 02:22:32,953 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-11-28 02:22:32,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:22:32,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-11-28 02:22:32,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 51 transitions, 106 flow [2024-11-28 02:22:32,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 103 flow [2024-11-28 02:22:32,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:22:32,989 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;@74152384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:22:32,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-28 02:22:32,994 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:22:32,994 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-28 02:22:32,994 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:22:32,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:32,995 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 02:22:32,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:33,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 11277, now seen corresponding path program 1 times [2024-11-28 02:22:33,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:33,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637182888] [2024-11-28 02:22:33,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:33,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:33,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:33,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:22:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:33,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:22:33,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:33,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 02:22:33,296 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 02:22:33,297 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:33,297 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:33,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637182888] [2024-11-28 02:22:33,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637182888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:33,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:33,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:22:33,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496445838] [2024-11-28 02:22:33,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:33,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:33,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:33,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:33,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:33,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 51 [2024-11-28 02:22:33,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 02:22:33,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:33,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 51 [2024-11-28 02:22:33,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:33,701 INFO L124 PetriNetUnfolderBase]: 42/177 cut-off events. [2024-11-28 02:22:33,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:22:33,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 177 events. 42/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 778 event pairs, 42 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 261. Up to 101 conditions per place. [2024-11-28 02:22:33,708 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 18 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-11-28 02:22:33,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 135 flow [2024-11-28 02:22:33,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-28 02:22:33,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-11-28 02:22:33,729 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 103 flow. Second operand 3 states and 105 transitions. [2024-11-28 02:22:33,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 135 flow [2024-11-28 02:22:33,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:33,742 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 98 flow [2024-11-28 02:22:33,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-28 02:22:33,752 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-11-28 02:22:33,752 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 98 flow [2024-11-28 02:22:33,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 02:22:33,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:33,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 02:22:33,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:22:33,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:33,954 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:33,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 11278, now seen corresponding path program 1 times [2024-11-28 02:22:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143885903] [2024-11-28 02:22:33,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:33,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:33,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:33,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:22:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:34,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:22:34,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:34,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 02:22:34,159 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 02:22:34,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:34,160 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:34,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143885903] [2024-11-28 02:22:34,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143885903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:34,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:34,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:22:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473134492] [2024-11-28 02:22:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:34,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:34,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:34,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:34,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2024-11-28 02:22:34,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 02:22:34,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:34,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2024-11-28 02:22:34,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:34,492 INFO L124 PetriNetUnfolderBase]: 42/173 cut-off events. [2024-11-28 02:22:34,492 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:22:34,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 173 events. 42/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 777 event pairs, 42 based on Foata normal form. 3/139 useless extension candidates. Maximal degree in co-relation 269. Up to 101 conditions per place. [2024-11-28 02:22:34,498 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 16 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-28 02:22:34,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 126 flow [2024-11-28 02:22:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-28 02:22:34,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7124183006535948 [2024-11-28 02:22:34,502 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 98 flow. Second operand 3 states and 109 transitions. [2024-11-28 02:22:34,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 126 flow [2024-11-28 02:22:34,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:34,504 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 90 flow [2024-11-28 02:22:34,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-28 02:22:34,505 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2024-11-28 02:22:34,505 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 90 flow [2024-11-28 02:22:34,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 02:22:34,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:34,506 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:22:34,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:22:34,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:34,711 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:34,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1834066327, now seen corresponding path program 1 times [2024-11-28 02:22:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:34,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236716099] [2024-11-28 02:22:34,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:34,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:34,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:34,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:34,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:22:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:34,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:22:34,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:34,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 02:22:34,909 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 02:22:34,909 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:34,909 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236716099] [2024-11-28 02:22:34,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236716099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:34,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:34,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:34,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218500985] [2024-11-28 02:22:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:34,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:34,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:34,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:34,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:35,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 51 [2024-11-28 02:22:35,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 02:22:35,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:35,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 51 [2024-11-28 02:22:35,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:35,170 INFO L124 PetriNetUnfolderBase]: 49/180 cut-off events. [2024-11-28 02:22:35,170 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:22:35,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 180 events. 49/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 755 event pairs, 49 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 291. Up to 116 conditions per place. [2024-11-28 02:22:35,172 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 18 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2024-11-28 02:22:35,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 120 flow [2024-11-28 02:22:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-28 02:22:35,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6993464052287581 [2024-11-28 02:22:35,174 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 90 flow. Second operand 3 states and 107 transitions. [2024-11-28 02:22:35,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 120 flow [2024-11-28 02:22:35,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:35,176 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 80 flow [2024-11-28 02:22:35,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-28 02:22:35,177 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2024-11-28 02:22:35,177 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 80 flow [2024-11-28 02:22:35,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 02:22:35,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:35,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:22:35,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:22:35,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:35,378 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:35,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1834066328, now seen corresponding path program 1 times [2024-11-28 02:22:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:35,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482588957] [2024-11-28 02:22:35,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:35,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:35,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:35,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:22:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:35,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:22:35,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:35,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 02:22:35,610 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 02:22:35,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:35,610 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482588957] [2024-11-28 02:22:35,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482588957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:35,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:35,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:35,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276995836] [2024-11-28 02:22:35,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:35,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:35,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:35,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:35,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2024-11-28 02:22:35,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:22:35,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:35,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2024-11-28 02:22:35,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:35,876 INFO L124 PetriNetUnfolderBase]: 42/149 cut-off events. [2024-11-28 02:22:35,876 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:22:35,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 149 events. 42/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 583 event pairs, 42 based on Foata normal form. 8/136 useless extension candidates. Maximal degree in co-relation 248. Up to 101 conditions per place. [2024-11-28 02:22:35,878 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 17 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2024-11-28 02:22:35,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 108 flow [2024-11-28 02:22:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-28 02:22:35,880 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7124183006535948 [2024-11-28 02:22:35,880 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 80 flow. Second operand 3 states and 109 transitions. [2024-11-28 02:22:35,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 108 flow [2024-11-28 02:22:35,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:35,881 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 73 flow [2024-11-28 02:22:35,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-28 02:22:35,882 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -14 predicate places. [2024-11-28 02:22:35,882 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 73 flow [2024-11-28 02:22:35,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:22:35,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:35,883 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:35,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:36,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:36,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:36,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1903559775, now seen corresponding path program 1 times [2024-11-28 02:22:36,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:36,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45619991] [2024-11-28 02:22:36,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:36,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:36,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:36,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:36,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:22:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:36,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:22:36,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:36,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 02:22:36,301 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 02:22:36,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:36,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:36,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45619991] [2024-11-28 02:22:36,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45619991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:36,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:36,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021115610] [2024-11-28 02:22:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:36,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:36,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:36,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:36,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:36,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 51 [2024-11-28 02:22:36,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:36,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:36,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 51 [2024-11-28 02:22:36,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:36,569 INFO L124 PetriNetUnfolderBase]: 49/166 cut-off events. [2024-11-28 02:22:36,569 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:22:36,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 166 events. 49/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 675 event pairs, 35 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 280. Up to 88 conditions per place. [2024-11-28 02:22:36,573 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 24 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-28 02:22:36,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 135 flow [2024-11-28 02:22:36,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-11-28 02:22:36,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7712418300653595 [2024-11-28 02:22:36,576 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 73 flow. Second operand 3 states and 118 transitions. [2024-11-28 02:22:36,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 135 flow [2024-11-28 02:22:36,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:36,577 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 72 flow [2024-11-28 02:22:36,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-11-28 02:22:36,580 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -15 predicate places. [2024-11-28 02:22:36,580 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 72 flow [2024-11-28 02:22:36,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:22:36,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:36,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:36,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:22:36,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:36,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:36,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1903559774, now seen corresponding path program 1 times [2024-11-28 02:22:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602882464] [2024-11-28 02:22:36,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:36,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:36,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:36,786 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:36,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:22:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:36,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:22:36,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:36,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 02:22:37,007 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 02:22:37,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:37,007 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:37,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602882464] [2024-11-28 02:22:37,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602882464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:37,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:37,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209931117] [2024-11-28 02:22:37,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:37,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:22:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:37,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:22:37,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:22:37,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 51 [2024-11-28 02:22:37,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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 02:22:37,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:37,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 51 [2024-11-28 02:22:37,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:37,336 INFO L124 PetriNetUnfolderBase]: 42/143 cut-off events. [2024-11-28 02:22:37,336 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 02:22:37,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 143 events. 42/143 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 540 event pairs, 35 based on Foata normal form. 16/146 useless extension candidates. Maximal degree in co-relation 258. Up to 88 conditions per place. [2024-11-28 02:22:37,338 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 23 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-28 02:22:37,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 132 flow [2024-11-28 02:22:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:22:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:22:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-28 02:22:37,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2024-11-28 02:22:37,340 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 72 flow. Second operand 3 states and 120 transitions. [2024-11-28 02:22:37,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 132 flow [2024-11-28 02:22:37,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:37,341 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 68 flow [2024-11-28 02:22:37,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2024-11-28 02:22:37,342 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -17 predicate places. [2024-11-28 02:22:37,343 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 68 flow [2024-11-28 02:22:37,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 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 02:22:37,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:37,343 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:37,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:22:37,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:37,544 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:37,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1759856248, now seen corresponding path program 1 times [2024-11-28 02:22:37,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250168113] [2024-11-28 02:22:37,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:37,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:37,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:37,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:37,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:22:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:37,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:22:37,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:37,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 02:22:37,787 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-28 02:22:37,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2024-11-28 02:22:37,888 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 19 treesize of output 1 [2024-11-28 02:22:37,985 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 23 treesize of output 11 [2024-11-28 02:22:38,006 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 02:22:38,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:38,011 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250168113] [2024-11-28 02:22:38,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250168113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:38,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:38,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:22:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163230638] [2024-11-28 02:22:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:38,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:22:38,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:38,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:22:38,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:22:38,350 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-28 02:22:38,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 02:22:38,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:38,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-28 02:22:38,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:38,798 INFO L124 PetriNetUnfolderBase]: 98/267 cut-off events. [2024-11-28 02:22:38,798 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-28 02:22:38,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 267 events. 98/267 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1169 event pairs, 6 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 508. Up to 103 conditions per place. [2024-11-28 02:22:38,800 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 38 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2024-11-28 02:22:38,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 230 flow [2024-11-28 02:22:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:22:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:22:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-11-28 02:22:38,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5994397759103641 [2024-11-28 02:22:38,802 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 68 flow. Second operand 7 states and 214 transitions. [2024-11-28 02:22:38,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 230 flow [2024-11-28 02:22:38,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:38,806 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 138 flow [2024-11-28 02:22:38,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-28 02:22:38,807 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2024-11-28 02:22:38,807 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 138 flow [2024-11-28 02:22:38,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 02:22:38,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:38,808 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:38,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:22:39,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:39,008 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:39,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1759856249, now seen corresponding path program 1 times [2024-11-28 02:22:39,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:39,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193442605] [2024-11-28 02:22:39,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:39,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:39,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:39,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:39,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:22:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:39,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:22:39,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:39,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 02:22:39,303 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 02:22:39,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-28 02:22:39,328 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:22:39,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:22:39,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:22:39,412 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 13 treesize of output 9 [2024-11-28 02:22:39,535 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 31 treesize of output 13 [2024-11-28 02:22:39,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:22:39,569 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 02:22:39,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:39,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:39,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193442605] [2024-11-28 02:22:39,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193442605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:39,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:39,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:22:39,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677023984] [2024-11-28 02:22:39,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:39,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:22:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:39,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:22:39,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:22:40,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-28 02:22:40,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 02:22:40,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:40,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-28 02:22:40,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:40,962 INFO L124 PetriNetUnfolderBase]: 117/305 cut-off events. [2024-11-28 02:22:40,962 INFO L125 PetriNetUnfolderBase]: For 121/123 co-relation queries the response was YES. [2024-11-28 02:22:40,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 305 events. 117/305 cut-off events. For 121/123 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1374 event pairs, 15 based on Foata normal form. 12/307 useless extension candidates. Maximal degree in co-relation 728. Up to 142 conditions per place. [2024-11-28 02:22:40,965 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 45 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-11-28 02:22:40,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 320 flow [2024-11-28 02:22:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:22:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:22:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2024-11-28 02:22:40,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2024-11-28 02:22:40,967 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 138 flow. Second operand 8 states and 232 transitions. [2024-11-28 02:22:40,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 320 flow [2024-11-28 02:22:40,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:22:40,970 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 193 flow [2024-11-28 02:22:40,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-11-28 02:22:40,971 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-11-28 02:22:40,971 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 193 flow [2024-11-28 02:22:40,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 02:22:40,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:40,972 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:40,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:41,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:41,176 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:41,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:41,176 INFO L85 PathProgramCache]: Analyzing trace with hash 392023546, now seen corresponding path program 1 times [2024-11-28 02:22:41,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:41,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065063771] [2024-11-28 02:22:41,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:41,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:41,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:41,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:41,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:22:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:41,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:22:41,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:41,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 02:22:41,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 02:22:41,446 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 02:22:41,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-28 02:22:41,469 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:22:41,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:22:41,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:22:41,584 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 13 treesize of output 9 [2024-11-28 02:22:41,686 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:22:41,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:22:41,717 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-28 02:22:41,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2024-11-28 02:22:41,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-28 02:22:41,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:22:41,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:22:42,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:22:42,054 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 02:22:42,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:42,055 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:42,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065063771] [2024-11-28 02:22:42,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065063771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:42,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:42,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:22:42,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139492219] [2024-11-28 02:22:42,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:42,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:22:42,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:42,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:22:42,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:22:43,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-28 02:22:43,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 193 flow. Second operand has 9 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 02:22:43,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:43,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-28 02:22:43,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:44,135 INFO L124 PetriNetUnfolderBase]: 128/344 cut-off events. [2024-11-28 02:22:44,135 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-28 02:22:44,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 344 events. 128/344 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1617 event pairs, 22 based on Foata normal form. 8/340 useless extension candidates. Maximal degree in co-relation 896. Up to 89 conditions per place. [2024-11-28 02:22:44,138 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 43 selfloop transitions, 37 changer transitions 0/85 dead transitions. [2024-11-28 02:22:44,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 548 flow [2024-11-28 02:22:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:22:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 02:22:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 331 transitions. [2024-11-28 02:22:44,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5408496732026143 [2024-11-28 02:22:44,141 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 193 flow. Second operand 12 states and 331 transitions. [2024-11-28 02:22:44,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 548 flow [2024-11-28 02:22:44,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 498 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-28 02:22:44,146 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 378 flow [2024-11-28 02:22:44,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=378, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-11-28 02:22:44,147 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-11-28 02:22:44,147 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 378 flow [2024-11-28 02:22:44,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 02:22:44,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:44,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:44,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:22:44,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:44,352 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:44,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -993171465, now seen corresponding path program 1 times [2024-11-28 02:22:44,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:44,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219280943] [2024-11-28 02:22:44,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:44,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:44,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:44,355 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:44,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:22:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:44,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:22:44,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:44,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 02:22:44,587 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-28 02:22:44,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2024-11-28 02:22:44,677 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 19 treesize of output 1 [2024-11-28 02:22:44,791 INFO L349 Elim1Store]: treesize reduction 82, result has 29.9 percent of original size [2024-11-28 02:22:44,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 48 [2024-11-28 02:22:44,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-11-28 02:22:44,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 02:22:45,062 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 02:22:45,062 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:45,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:22:45,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219280943] [2024-11-28 02:22:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219280943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:22:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812635753] [2024-11-28 02:22:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:45,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:22:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:22:45,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:22:45,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:22:45,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-28 02:22:45,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 378 flow. Second operand has 9 states, 9 states have (on average 22.444444444444443) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 02:22:45,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:22:45,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-28 02:22:45,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:22:46,877 INFO L124 PetriNetUnfolderBase]: 118/321 cut-off events. [2024-11-28 02:22:46,877 INFO L125 PetriNetUnfolderBase]: For 338/340 co-relation queries the response was YES. [2024-11-28 02:22:46,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 321 events. 118/321 cut-off events. For 338/340 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1470 event pairs, 13 based on Foata normal form. 10/320 useless extension candidates. Maximal degree in co-relation 920. Up to 97 conditions per place. [2024-11-28 02:22:46,880 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 51 selfloop transitions, 27 changer transitions 0/84 dead transitions. [2024-11-28 02:22:46,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 84 transitions, 580 flow [2024-11-28 02:22:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:22:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 02:22:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-11-28 02:22:46,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5163398692810458 [2024-11-28 02:22:46,884 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 378 flow. Second operand 12 states and 316 transitions. [2024-11-28 02:22:46,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 84 transitions, 580 flow [2024-11-28 02:22:46,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:22:46,889 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 458 flow [2024-11-28 02:22:46,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=458, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-11-28 02:22:46,890 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-11-28 02:22:46,890 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 458 flow [2024-11-28 02:22:46,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.444444444444443) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 02:22:46,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:22:46,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:46,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:47,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:47,091 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-11-28 02:22:47,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:47,091 INFO L85 PathProgramCache]: Analyzing trace with hash -787896675, now seen corresponding path program 1 times [2024-11-28 02:22:47,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:22:47,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082334713] [2024-11-28 02:22:47,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:47,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:47,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:47,095 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:47,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:22:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:47,603 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:22:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:22:48,218 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 02:22:48,218 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:22:48,219 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (35 of 36 remaining) [2024-11-28 02:22:48,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 36 remaining) [2024-11-28 02:22:48,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 36 remaining) [2024-11-28 02:22:48,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 36 remaining) [2024-11-28 02:22:48,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 36 remaining) [2024-11-28 02:22:48,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 36 remaining) [2024-11-28 02:22:48,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 36 remaining) [2024-11-28 02:22:48,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 36 remaining) [2024-11-28 02:22:48,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 36 remaining) [2024-11-28 02:22:48,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 36 remaining) [2024-11-28 02:22:48,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 36 remaining) [2024-11-28 02:22:48,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 36 remaining) [2024-11-28 02:22:48,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:22:48,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:48,426 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:48,453 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:22:48,453 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:22:48,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:22:48 BasicIcfg [2024-11-28 02:22:48,458 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:22:48,459 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:22:48,459 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:22:48,459 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:22:48,460 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:32" (3/4) ... [2024-11-28 02:22:48,461 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:22:48,462 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:22:48,463 INFO L158 Benchmark]: Toolchain (without parser) took 17868.51ms. Allocated memory was 83.9MB in the beginning and 142.6MB in the end (delta: 58.7MB). Free memory was 59.2MB in the beginning and 78.5MB in the end (delta: -19.3MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2024-11-28 02:22:48,463 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:22:48,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 846.01ms. Allocated memory is still 83.9MB. Free memory was 59.2MB in the beginning and 56.4MB in the end (delta: 2.8MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2024-11-28 02:22:48,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.56ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 53.6MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:22:48,464 INFO L158 Benchmark]: Boogie Preprocessor took 60.41ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 50.8MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:22:48,464 INFO L158 Benchmark]: RCFGBuilder took 1142.10ms. Allocated memory is still 83.9MB. Free memory was 50.6MB in the beginning and 25.0MB in the end (delta: 25.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 02:22:48,464 INFO L158 Benchmark]: TraceAbstraction took 15726.64ms. Allocated memory was 83.9MB in the beginning and 142.6MB in the end (delta: 58.7MB). Free memory was 24.2MB in the beginning and 78.5MB in the end (delta: -54.3MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2024-11-28 02:22:48,465 INFO L158 Benchmark]: Witness Printer took 3.51ms. Allocated memory is still 142.6MB. Free memory was 78.5MB in the beginning and 78.5MB in the end (delta: 7.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:22:48,466 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 846.01ms. Allocated memory is still 83.9MB. Free memory was 59.2MB in the beginning and 56.4MB in the end (delta: 2.8MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.56ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 53.6MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.41ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 50.8MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1142.10ms. Allocated memory is still 83.9MB. Free memory was 50.6MB in the beginning and 25.0MB in the end (delta: 25.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15726.64ms. Allocated memory was 83.9MB in the beginning and 142.6MB in the end (delta: 58.7MB). Free memory was 24.2MB in the beginning and 78.5MB in the end (delta: -54.3MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 3.51ms. Allocated memory is still 142.6MB. Free memory was 78.5MB in the beginning and 78.5MB in the end (delta: 7.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1244]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1244. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1245] 0 pthread_t t1; [L1246] 0 struct s *p = malloc(sizeof(struct s)); [L1247] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={0:0}, A_mutex={1:0}] [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(p,9) [L1248] 0 A = malloc(sizeof(struct s)) [L1249] CALL 0 init(A,3) [L1228] 0 p -> datum = x VAL [A={3:0}, A_mutex={1:0}] [L1229] 0 p -> next = ((void *)0) [L1249] RET 0 init(A,3) [L1250] 0 A->next = p [L1251] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, A_mutex={1:0}, p={32768:0}, t1=0] [L1253] EXPR 0 A->next [L1253] 0 p = A->next [L1254] 0 p->datum [L1256] 0 return 0; VAL [A={3:0}, A_mutex={1:0}, \result=0, p={32768:0}, t1=0] - 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: -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: -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: -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: -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: -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: -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: 1251]: 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: -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: -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: -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: -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 3 procedures, 74 locations, 36 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: 15.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1260 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 876 mSDsluCounter, 285 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 203 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2216 IncrementalHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 82 mSDtfsCounter, 2216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=458occurred in iteration=10, InterpolantAutomatonStates: 57, 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, 2.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 76 ConstructedInterpolants, 5 QuantifiedInterpolants, 1177 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1410 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 02:22:48,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34067de5-08ea-4d03-8f77-e05f891ebcb0/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