./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.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_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/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_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/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_36b73486-e551-4bbe-9941-fa1f1a7b6864/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 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:18:50,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:18:50,386 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:18:50,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:18:50,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:18:50,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:18:50,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:18:50,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:18:50,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:18:50,428 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:18:50,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:18:50,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:18:50,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:18:50,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:18:50,431 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:18:50,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:18:50,432 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:18:50,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:18:50,432 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:18:50,433 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:18:50,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:18:50,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:18:50,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:18:50,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:18:50,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:18:50,436 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:18:50,436 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:18:50,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:18:50,437 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_36b73486-e551-4bbe-9941-fa1f1a7b6864/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 -> 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 [2024-11-28 04:18:50,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:18:50,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:18:50,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:18:50,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:18:50,813 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:18:50,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2024-11-28 04:18:54,336 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/data/f4dcf364f/8e5c86d75b474186adbe197901a34f38/FLAG103d4bf5d [2024-11-28 04:18:54,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:18:54,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2024-11-28 04:18:54,829 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/data/f4dcf364f/8e5c86d75b474186adbe197901a34f38/FLAG103d4bf5d [2024-11-28 04:18:54,851 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/data/f4dcf364f/8e5c86d75b474186adbe197901a34f38 [2024-11-28 04:18:54,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:18:54,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:18:54,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:18:54,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:18:54,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:18:54,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:18:54" (1/1) ... [2024-11-28 04:18:54,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14071aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:54, skipping insertion in model container [2024-11-28 04:18:54,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:18:54" (1/1) ... [2024-11-28 04:18:54,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:18:55,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:18:55,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:18:55,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:18:55,631 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:18:55,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55 WrapperNode [2024-11-28 04:18:55,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:18:55,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:18:55,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:18:55,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:18:55,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,734 INFO L138 Inliner]: procedures = 176, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2024-11-28 04:18:55,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:18:55,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:18:55,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:18:55,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:18:55,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,818 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [2, 28]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-11-28 04:18:55,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,843 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:18:55,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:18:55,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:18:55,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:18:55,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (1/1) ... [2024-11-28 04:18:55,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:18:55,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:18:55,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:18:55,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b73486-e551-4bbe-9941-fa1f1a7b6864/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:18:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:18:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:18:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:18:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:18:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:18:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:18:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-28 04:18:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-28 04:18:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-28 04:18:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-28 04:18:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-28 04:18:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-28 04:18:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-28 04:18:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-28 04:18:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:18:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:18:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:18:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:18:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:18:55,990 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 04:18:56,246 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:18:56,249 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:18:57,373 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:18:57,373 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:18:58,623 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:18:58,623 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:18:58,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:18:58 BoogieIcfgContainer [2024-11-28 04:18:58,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:18:58,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:18:58,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:18:58,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:18:58,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:18:54" (1/3) ... [2024-11-28 04:18:58,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb1a4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:18:58, skipping insertion in model container [2024-11-28 04:18:58,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:55" (2/3) ... [2024-11-28 04:18:58,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb1a4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:18:58, skipping insertion in model container [2024-11-28 04:18:58,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:18:58" (3/3) ... [2024-11-28 04:18:58,635 INFO L128 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2024-11-28 04:18:58,655 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:18:58,657 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe016_power.opt.i that has 5 procedures, 103 locations, 1 initial locations, 0 loop locations, and 56 error locations. [2024-11-28 04:18:58,657 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:18:58,921 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:18:58,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 104 transitions, 224 flow [2024-11-28 04:18:59,059 INFO L124 PetriNetUnfolderBase]: 2/100 cut-off events. [2024-11-28 04:18:59,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:18:59,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 2/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 403 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2024-11-28 04:18:59,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 104 transitions, 224 flow [2024-11-28 04:18:59,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 100 transitions, 212 flow [2024-11-28 04:18:59,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:18:59,096 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;@396844c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:18:59,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2024-11-28 04:18:59,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:18:59,102 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-11-28 04:18:59,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:18:59,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:59,103 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 04:18:59,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-28 04:18:59,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 977855809, now seen corresponding path program 1 times [2024-11-28 04:18:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:59,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480251067] [2024-11-28 04:18:59,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:59,596 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 04:18:59,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:59,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480251067] [2024-11-28 04:18:59,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480251067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:59,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:59,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:18:59,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033018702] [2024-11-28 04:18:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:59,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:18:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:59,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:18:59,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:18:59,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-11-28 04:18:59,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:59,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:59,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-11-28 04:18:59,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:19:21,445 INFO L124 PetriNetUnfolderBase]: 81178/115730 cut-off events. [2024-11-28 04:19:21,445 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-28 04:19:21,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222523 conditions, 115730 events. 81178/115730 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7138. Compared 955126 event pairs, 81178 based on Foata normal form. 3430/68295 useless extension candidates. Maximal degree in co-relation 222511. Up to 105987 conditions per place. [2024-11-28 04:19:22,429 INFO L140 encePairwiseOnDemand]: 63/104 looper letters, 42 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-11-28 04:19:22,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 216 flow [2024-11-28 04:19:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:19:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:19:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-11-28 04:19:22,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-28 04:19:22,447 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 212 flow. Second operand 3 states and 143 transitions. [2024-11-28 04:19:22,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 216 flow [2024-11-28 04:19:22,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:19:22,528 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 128 flow [2024-11-28 04:19:22,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-11-28 04:19:22,537 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -41 predicate places. [2024-11-28 04:19:22,539 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 128 flow [2024-11-28 04:19:22,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:22,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:19:22,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 04:19:22,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:19:22,540 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-28 04:19:22,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash 977855810, now seen corresponding path program 1 times [2024-11-28 04:19:22,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:22,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679410718] [2024-11-28 04:19:22,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:22,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:22,761 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 04:19:22,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:22,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679410718] [2024-11-28 04:19:22,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679410718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:22,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:22,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:19:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60953149] [2024-11-28 04:19:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:22,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:19:22,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:22,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:19:22,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:19:22,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-11-28 04:19:22,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:22,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:19:22,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-11-28 04:19:22,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:19:25,072 INFO L124 PetriNetUnfolderBase]: 6311/9802 cut-off events. [2024-11-28 04:19:25,073 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:19:25,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18568 conditions, 9802 events. 6311/9802 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 67188 event pairs, 6311 based on Foata normal form. 0/9243 useless extension candidates. Maximal degree in co-relation 18562. Up to 8592 conditions per place. [2024-11-28 04:19:25,120 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 27 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2024-11-28 04:19:25,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 158 flow [2024-11-28 04:19:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:19:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:19:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-28 04:19:25,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3301282051282051 [2024-11-28 04:19:25,123 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 128 flow. Second operand 3 states and 103 transitions. [2024-11-28 04:19:25,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 158 flow [2024-11-28 04:19:25,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:19:25,124 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 99 flow [2024-11-28 04:19:25,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-11-28 04:19:25,125 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -54 predicate places. [2024-11-28 04:19:25,125 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 99 flow [2024-11-28 04:19:25,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:25,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:19:25,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:25,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:19:25,126 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-28 04:19:25,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:25,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1238085401, now seen corresponding path program 1 times [2024-11-28 04:19:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:25,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814695229] [2024-11-28 04:19:25,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:25,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:25,562 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 04:19:25,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:25,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814695229] [2024-11-28 04:19:25,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814695229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:25,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:25,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:19:25,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876233998] [2024-11-28 04:19:25,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:25,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:19:25,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:25,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:19:25,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:19:25,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-11-28 04:19:25,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:25,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:19:25,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-11-28 04:19:25,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:19:27,556 INFO L124 PetriNetUnfolderBase]: 5447/8462 cut-off events. [2024-11-28 04:19:27,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:19:27,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16077 conditions, 8462 events. 5447/8462 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 55983 event pairs, 1783 based on Foata normal form. 0/8131 useless extension candidates. Maximal degree in co-relation 16070. Up to 6097 conditions per place. [2024-11-28 04:19:27,601 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 43 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-11-28 04:19:27,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-11-28 04:19:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:19:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:19:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-28 04:19:27,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34294871794871795 [2024-11-28 04:19:27,609 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 99 flow. Second operand 3 states and 107 transitions. [2024-11-28 04:19:27,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-11-28 04:19:27,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:19:27,613 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-11-28 04:19:27,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-11-28 04:19:27,614 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -53 predicate places. [2024-11-28 04:19:27,616 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-11-28 04:19:27,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:27,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:19:27,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:27,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:19:27,617 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-28 04:19:27,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:27,618 INFO L85 PathProgramCache]: Analyzing trace with hash -94034154, now seen corresponding path program 1 times [2024-11-28 04:19:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:27,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143294716] [2024-11-28 04:19:27,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:27,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:28,300 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 04:19:28,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:28,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143294716] [2024-11-28 04:19:28,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143294716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:28,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:28,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:19:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435001578] [2024-11-28 04:19:28,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:28,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:19:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:28,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:19:28,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:19:28,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-11-28 04:19:28,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 04:19:28,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:19:28,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-11-28 04:19:28,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:19:30,047 INFO L124 PetriNetUnfolderBase]: 5039/7910 cut-off events. [2024-11-28 04:19:30,048 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2024-11-28 04:19:30,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15951 conditions, 7910 events. 5039/7910 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 52141 event pairs, 1591 based on Foata normal form. 0/7867 useless extension candidates. Maximal degree in co-relation 15942. Up to 5544 conditions per place. [2024-11-28 04:19:30,094 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 42 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-28 04:19:30,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 228 flow [2024-11-28 04:19:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:19:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:19:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-28 04:19:30,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3004807692307692 [2024-11-28 04:19:30,097 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 125 transitions. [2024-11-28 04:19:30,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 228 flow [2024-11-28 04:19:30,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:19:30,100 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-11-28 04:19:30,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-28 04:19:30,101 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -53 predicate places. [2024-11-28 04:19:30,102 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-11-28 04:19:30,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 04:19:30,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:19:30,102 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:30,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:19:30,103 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-28 04:19:30,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:30,103 INFO L85 PathProgramCache]: Analyzing trace with hash -94034155, now seen corresponding path program 1 times [2024-11-28 04:19:30,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:30,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934810078] [2024-11-28 04:19:30,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:30,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:30,335 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 04:19:30,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:30,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934810078] [2024-11-28 04:19:30,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934810078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:30,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:30,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:19:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248964554] [2024-11-28 04:19:30,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:30,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:19:30,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:30,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:19:30,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:19:30,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 104 [2024-11-28 04:19:30,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 04:19:30,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:19:30,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 104 [2024-11-28 04:19:30,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:19:31,943 INFO L124 PetriNetUnfolderBase]: 4631/7358 cut-off events. [2024-11-28 04:19:31,944 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2024-11-28 04:19:31,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14703 conditions, 7358 events. 4631/7358 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 48646 event pairs, 1399 based on Foata normal form. 144/7459 useless extension candidates. Maximal degree in co-relation 14694. Up to 4992 conditions per place. [2024-11-28 04:19:31,991 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 41 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-28 04:19:31,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-11-28 04:19:31,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:19:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:19:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-28 04:19:31,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2980769230769231 [2024-11-28 04:19:31,993 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 124 transitions. [2024-11-28 04:19:31,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-11-28 04:19:31,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 217 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:19:31,997 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-11-28 04:19:31,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-28 04:19:31,998 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -54 predicate places. [2024-11-28 04:19:31,998 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-11-28 04:19:31,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 04:19:31,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:19:31,999 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:31,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:19:31,999 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-28 04:19:31,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash -227323458, now seen corresponding path program 1 times [2024-11-28 04:19:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:32,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116439845] [2024-11-28 04:19:32,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:32,104 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 04:19:32,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:32,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116439845] [2024-11-28 04:19:32,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116439845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:32,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:32,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:19:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194057961] [2024-11-28 04:19:32,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:32,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:19:32,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:32,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:19:32,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:19:32,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 104 [2024-11-28 04:19:32,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:19:32,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:19:32,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 104 [2024-11-28 04:19:32,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand