./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX --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 8389c73a3873efed3be614e3a02a2457c4db9f1b1dfabf64c87229b49920fe65 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:56:07,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:56:07,394 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:56:07,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:56:07,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:56:07,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:56:07,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:56:07,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:56:07,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:56:07,456 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:56:07,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:56:07,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:56:07,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:56:07,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:56:07,459 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:56:07,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:56:07,460 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:56:07,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:56:07,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:56:07,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:56:07,462 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:56:07,467 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:56:07,467 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:56:07,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:56:07,467 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:56:07,468 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:56:07,468 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:56:07,468 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:56:07,469 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:56:07,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:56:07,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:56:07,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:56:07,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:56:07,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:56:07,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:56:07,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:56:07,487 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:56:07,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:56:07,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:56:07,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:56:07,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:56:07,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:56:07,490 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8389c73a3873efed3be614e3a02a2457c4db9f1b1dfabf64c87229b49920fe65 [2024-11-08 17:56:07,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:56:07,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:56:07,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:56:07,863 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:56:07,864 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:56:07,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i Unable to find full path for "g++" [2024-11-08 17:56:10,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:56:10,662 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:56:10,663 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2024-11-08 17:56:10,686 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/data/26ae74707/6ba0f86755a144b0b7dacb1777444746/FLAGda20b833d [2024-11-08 17:56:10,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/data/26ae74707/6ba0f86755a144b0b7dacb1777444746 [2024-11-08 17:56:10,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:56:10,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:56:10,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:56:10,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:56:10,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:56:10,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:56:10" (1/1) ... [2024-11-08 17:56:10,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61bc8955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:10, skipping insertion in model container [2024-11-08 17:56:10,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:56:10" (1/1) ... [2024-11-08 17:56:10,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:56:11,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:56:11,424 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:56:11,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:56:11,545 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:56:11,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11 WrapperNode [2024-11-08 17:56:11,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:56:11,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:56:11,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:56:11,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:56:11,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,653 INFO L138 Inliner]: procedures = 173, calls = 62, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 476 [2024-11-08 17:56:11,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:56:11,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:56:11,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:56:11,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:56:11,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,729 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-08 17:56:11,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:56:11,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:56:11,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:56:11,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:56:11,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (1/1) ... [2024-11-08 17:56:11,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:56:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:56:11,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:56:11,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9c51672-9e46-48d2-bbc5-b58b83b21710/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:56:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-08 17:56:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-08 17:56:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:56:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:56:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:56:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:56:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:56:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:56:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:56:11,943 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:56:12,187 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:56:12,196 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:56:13,115 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:56:13,115 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:56:14,201 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:56:14,201 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 17:56:14,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:56:14 BoogieIcfgContainer [2024-11-08 17:56:14,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:56:14,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:56:14,207 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:56:14,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:56:14,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:56:10" (1/3) ... [2024-11-08 17:56:14,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4c6503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:56:14, skipping insertion in model container [2024-11-08 17:56:14,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:11" (2/3) ... [2024-11-08 17:56:14,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4c6503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:56:14, skipping insertion in model container [2024-11-08 17:56:14,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:56:14" (3/3) ... [2024-11-08 17:56:14,217 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_NetBSD_sysmon_power_sliced-pthread.i [2024-11-08 17:56:14,243 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:56:14,243 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-08 17:56:14,243 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:56:14,401 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:56:14,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 203 transitions, 410 flow [2024-11-08 17:56:14,600 INFO L124 PetriNetUnfolderBase]: 49/207 cut-off events. [2024-11-08 17:56:14,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:56:14,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 207 events. 49/207 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 950 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 200. Up to 10 conditions per place. [2024-11-08 17:56:14,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 203 transitions, 410 flow [2024-11-08 17:56:14,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 203 transitions, 410 flow [2024-11-08 17:56:14,633 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:56:14,644 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;@241c90bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:56:14,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-08 17:56:14,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:56:14,675 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 17:56:14,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:56:14,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:14,677 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 17:56:14,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err6ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (and 20 more)] === [2024-11-08 17:56:14,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1183438, now seen corresponding path program 1 times [2024-11-08 17:56:14,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:14,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066289494] [2024-11-08 17:56:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:14,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:56:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066289494] [2024-11-08 17:56:15,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066289494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:15,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:15,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:56:15,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487998122] [2024-11-08 17:56:15,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:15,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:56:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:56:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:56:15,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:56:15,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 203 [2024-11-08 17:56:15,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 203 transitions, 410 flow. Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2024-11-08 17:56:15,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:56:15,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 203 [2024-11-08 17:56:15,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:56:16,062 INFO L124 PetriNetUnfolderBase]: 133/349 cut-off events. [2024-11-08 17:56:16,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:56:16,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 349 events. 133/349 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1546 event pairs, 83 based on Foata normal form. 26/326 useless extension candidates. Maximal degree in co-relation 621. Up to 281 conditions per place. [2024-11-08 17:56:16,068 INFO L140 encePairwiseOnDemand]: 187/203 looper letters, 99 selfloop transitions, 0 changer transitions 0/134 dead transitions. [2024-11-08 17:56:16,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 134 transitions, 470 flow [2024-11-08 17:56:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:56:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 17:56:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2024-11-08 17:56:16,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5591133004926109 [2024-11-08 17:56:16,092 INFO L175 Difference]: Start difference. First operand has 157 places, 203 transitions, 410 flow. Second operand 2 states and 227 transitions. [2024-11-08 17:56:16,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 134 transitions, 470 flow [2024-11-08 17:56:16,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 134 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:56:16,102 INFO L231 Difference]: Finished difference. Result has 113 places, 134 transitions, 272 flow [2024-11-08 17:56:16,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=272, PETRI_PLACES=113, PETRI_TRANSITIONS=134} [2024-11-08 17:56:16,111 INFO L277 CegarLoopForPetriNet]: 157 programPoint places, -44 predicate places. [2024-11-08 17:56:16,111 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 134 transitions, 272 flow [2024-11-08 17:56:16,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2024-11-08 17:56:16,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:16,112 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-08 17:56:16,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:56:16,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err6ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (and 20 more)] === [2024-11-08 17:56:16,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1137621021, now seen corresponding path program 1 times [2024-11-08 17:56:16,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:16,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122619285] [2024-11-08 17:56:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:56:16,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 17:56:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:56:16,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 17:56:16,441 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 17:56:16,443 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2024-11-08 17:56:16,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (22 of 24 remaining) [2024-11-08 17:56:16,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (21 of 24 remaining) [2024-11-08 17:56:16,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (20 of 24 remaining) [2024-11-08 17:56:16,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (19 of 24 remaining) [2024-11-08 17:56:16,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (18 of 24 remaining) [2024-11-08 17:56:16,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (17 of 24 remaining) [2024-11-08 17:56:16,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (16 of 24 remaining) [2024-11-08 17:56:16,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (15 of 24 remaining) [2024-11-08 17:56:16,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (14 of 24 remaining) [2024-11-08 17:56:16,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (13 of 24 remaining) [2024-11-08 17:56:16,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (12 of 24 remaining) [2024-11-08 17:56:16,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (11 of 24 remaining) [2024-11-08 17:56:16,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (10 of 24 remaining) [2024-11-08 17:56:16,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (9 of 24 remaining) [2024-11-08 17:56:16,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (8 of 24 remaining) [2024-11-08 17:56:16,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 24 remaining) [2024-11-08 17:56:16,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (6 of 24 remaining) [2024-11-08 17:56:16,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2024-11-08 17:56:16,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (4 of 24 remaining) [2024-11-08 17:56:16,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (3 of 24 remaining) [2024-11-08 17:56:16,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (2 of 24 remaining) [2024-11-08 17:56:16,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (1 of 24 remaining) [2024-11-08 17:56:16,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2024-11-08 17:56:16,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:56:16,456 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 17:56:16,460 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 17:56:16,460 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 17:56:16,575 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:56:16,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 400 transitions, 810 flow [2024-11-08 17:56:16,726 INFO L124 PetriNetUnfolderBase]: 98/408 cut-off events. [2024-11-08 17:56:16,726 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:56:16,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 408 events. 98/408 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2431 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 396. Up to 10 conditions per place. [2024-11-08 17:56:16,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 400 transitions, 810 flow [2024-11-08 17:56:16,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 400 transitions, 810 flow [2024-11-08 17:56:16,766 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:56:16,767 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;@241c90bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:56:16,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-08 17:56:16,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:56:16,777 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 17:56:16,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:56:16,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:16,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 17:56:16,778 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err6ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (and 31 more)] === [2024-11-08 17:56:16,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:16,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1580638, now seen corresponding path program 1 times [2024-11-08 17:56:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:16,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670052726] [2024-11-08 17:56:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:16,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:17,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:56:17,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670052726] [2024-11-08 17:56:17,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670052726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:17,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:17,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:56:17,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46127139] [2024-11-08 17:56:17,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:17,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:56:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:56:17,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:56:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:56:17,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 400 [2024-11-08 17:56:17,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 400 transitions, 810 flow. Second operand has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2024-11-08 17:56:17,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:56:17,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 400 [2024-11-08 17:56:17,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:56:23,896 INFO L124 PetriNetUnfolderBase]: 28698/48392 cut-off events. [2024-11-08 17:56:23,899 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-08 17:56:24,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89486 conditions, 48392 events. 28698/48392 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 401643 event pairs, 21626 based on Foata normal form. 4402/44796 useless extension candidates. Maximal degree in co-relation 87465. Up to 40834 conditions per place. [2024-11-08 17:56:24,320 INFO L140 encePairwiseOnDemand]: 369/400 looper letters, 196 selfloop transitions, 0 changer transitions 0/265 dead transitions. [2024-11-08 17:56:24,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 265 transitions, 932 flow [2024-11-08 17:56:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:56:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 17:56:24,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 447 transitions. [2024-11-08 17:56:24,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55875 [2024-11-08 17:56:24,325 INFO L175 Difference]: Start difference. First operand has 307 places, 400 transitions, 810 flow. Second operand 2 states and 447 transitions. [2024-11-08 17:56:24,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 265 transitions, 932 flow [2024-11-08 17:56:24,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 265 transitions, 932 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:56:24,334 INFO L231 Difference]: Finished difference. Result has 221 places, 265 transitions, 540 flow [2024-11-08 17:56:24,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=400, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=540, PETRI_PLACES=221, PETRI_TRANSITIONS=265} [2024-11-08 17:56:24,336 INFO L277 CegarLoopForPetriNet]: 307 programPoint places, -86 predicate places. [2024-11-08 17:56:24,336 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 265 transitions, 540 flow [2024-11-08 17:56:24,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2024-11-08 17:56:24,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:24,337 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2024-11-08 17:56:24,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:56:24,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err6ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (and 31 more)] === [2024-11-08 17:56:24,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash -18981993, now seen corresponding path program 1 times [2024-11-08 17:56:24,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:24,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224198954] [2024-11-08 17:56:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:24,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:56:24,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 17:56:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 17:56:24,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 17:56:24,552 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 17:56:24,553 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2024-11-08 17:56:24,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (33 of 35 remaining) [2024-11-08 17:56:24,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (32 of 35 remaining) [2024-11-08 17:56:24,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (31 of 35 remaining) [2024-11-08 17:56:24,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (30 of 35 remaining) [2024-11-08 17:56:24,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (29 of 35 remaining) [2024-11-08 17:56:24,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (28 of 35 remaining) [2024-11-08 17:56:24,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (27 of 35 remaining) [2024-11-08 17:56:24,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (26 of 35 remaining) [2024-11-08 17:56:24,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (25 of 35 remaining) [2024-11-08 17:56:24,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (24 of 35 remaining) [2024-11-08 17:56:24,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (23 of 35 remaining) [2024-11-08 17:56:24,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (22 of 35 remaining) [2024-11-08 17:56:24,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (21 of 35 remaining) [2024-11-08 17:56:24,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (20 of 35 remaining) [2024-11-08 17:56:24,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (19 of 35 remaining) [2024-11-08 17:56:24,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (18 of 35 remaining) [2024-11-08 17:56:24,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (17 of 35 remaining) [2024-11-08 17:56:24,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (16 of 35 remaining) [2024-11-08 17:56:24,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (15 of 35 remaining) [2024-11-08 17:56:24,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (14 of 35 remaining) [2024-11-08 17:56:24,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (13 of 35 remaining) [2024-11-08 17:56:24,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (12 of 35 remaining) [2024-11-08 17:56:24,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (11 of 35 remaining) [2024-11-08 17:56:24,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (10 of 35 remaining) [2024-11-08 17:56:24,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONMEMORY_LEAK (9 of 35 remaining) [2024-11-08 17:56:24,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONMEMORY_LEAK (8 of 35 remaining) [2024-11-08 17:56:24,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 35 remaining) [2024-11-08 17:56:24,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONMEMORY_LEAK (6 of 35 remaining) [2024-11-08 17:56:24,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (5 of 35 remaining) [2024-11-08 17:56:24,564 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (4 of 35 remaining) [2024-11-08 17:56:24,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (3 of 35 remaining) [2024-11-08 17:56:24,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONMEMORY_LEAK (2 of 35 remaining) [2024-11-08 17:56:24,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONMEMORY_LEAK (1 of 35 remaining) [2024-11-08 17:56:24,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONMEMORY_LEAK (0 of 35 remaining) [2024-11-08 17:56:24,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:56:24,566 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 17:56:24,567 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 17:56:24,567 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 17:56:24,698 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:56:24,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 597 transitions, 1212 flow [2024-11-08 17:56:25,116 INFO L124 PetriNetUnfolderBase]: 147/609 cut-off events. [2024-11-08 17:56:25,117 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-08 17:56:25,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 609 events. 147/609 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4051 event pairs, 0 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 592. Up to 10 conditions per place. [2024-11-08 17:56:25,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 457 places, 597 transitions, 1212 flow [2024-11-08 17:56:25,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 597 transitions, 1212 flow [2024-11-08 17:56:25,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:56:25,179 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;@241c90bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:56:25,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-08 17:56:25,187 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:56:25,188 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 17:56:25,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:56:25,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:56:25,189 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 17:56:25,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, thr1Err5ASSERT_VIOLATIONMEMORY_LEAK, thr1Err6ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (and 42 more)] === [2024-11-08 17:56:25,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2173459, now seen corresponding path program 1 times [2024-11-08 17:56:25,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:56:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672592479] [2024-11-08 17:56:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:56:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:25,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:56:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672592479] [2024-11-08 17:56:25,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672592479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:25,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:25,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:56:25,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852232819] [2024-11-08 17:56:25,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:25,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:56:25,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:56:25,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:56:25,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:56:25,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 597 [2024-11-08 17:56:25,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 597 transitions, 1212 flow. Second operand has 2 states, 2 states have (on average 165.0) internal successors, (330), 2 states have internal predecessors, (330), 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) [2024-11-08 17:56:25,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:56:25,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 597 [2024-11-08 17:56:25,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand