./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/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_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:29:31,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:29:32,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:29:32,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:29:32,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:29:32,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:29:32,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:29:32,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:29:32,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:29:32,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:29:32,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:29:32,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:29:32,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:29:32,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:29:32,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:29:32,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:29:32,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:29:32,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:29:32,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:29:32,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:29:32,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:29:32,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:29:32,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:29:32,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:29:32,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:29:32,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:29:32,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:29:32,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:29:32,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:29:32,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:29:32,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:29:32,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:29:32,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:29:32,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:29:32,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:29:32,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:29:32,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:29:32,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:29:32,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:29:32,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:29:32,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:29:32,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:29:32,105 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_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-08 17:29:32,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:29:32,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:29:32,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:29:32,482 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:29:32,483 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:29:32,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c Unable to find full path for "g++" [2024-11-08 17:29:34,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:29:35,189 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:29:35,190 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-08 17:29:35,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/data/80db670fa/ad4c2753aeb2487e9f0fc2d293c856cf/FLAG943a45d16 [2024-11-08 17:29:35,504 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/data/80db670fa/ad4c2753aeb2487e9f0fc2d293c856cf [2024-11-08 17:29:35,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:29:35,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:29:35,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:29:35,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:29:35,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:29:35,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f1390f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35, skipping insertion in model container [2024-11-08 17:29:35,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:29:35,788 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-08 17:29:35,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:29:35,803 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:29:35,830 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-08 17:29:35,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:29:35,852 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:29:35,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35 WrapperNode [2024-11-08 17:29:35,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:29:35,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:29:35,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:29:35,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:29:35,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,893 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-11-08 17:29:35,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:29:35,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:29:35,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:29:35,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:29:35,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,930 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 17:29:35,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:29:35,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:29:35,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:29:35,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:29:35,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (1/1) ... [2024-11-08 17:29:35,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:29:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:29:35,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:29:35,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:29:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:29:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:29:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:29:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:29:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:29:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:29:36,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:29:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 17:29:36,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 17:29:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:29:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:29:36,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:29:36,031 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 17:29:36,131 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:29:36,133 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:29:36,362 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:29:36,362 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:29:36,581 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:29:36,581 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:29:36,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:29:36 BoogieIcfgContainer [2024-11-08 17:29:36,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:29:36,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:29:36,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:29:36,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:29:36,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:29:35" (1/3) ... [2024-11-08 17:29:36,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5924173f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:29:36, skipping insertion in model container [2024-11-08 17:29:36,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:29:35" (2/3) ... [2024-11-08 17:29:36,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5924173f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:29:36, skipping insertion in model container [2024-11-08 17:29:36,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:29:36" (3/3) ... [2024-11-08 17:29:36,599 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-08 17:29:36,621 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:29:36,622 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:29:36,622 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:29:36,697 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 17:29:36,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 52 transitions, 132 flow [2024-11-08 17:29:36,774 INFO L124 PetriNetUnfolderBase]: 8/48 cut-off events. [2024-11-08 17:29:36,775 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:29:36,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 8/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-08 17:29:36,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 52 transitions, 132 flow [2024-11-08 17:29:36,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 47 transitions, 118 flow [2024-11-08 17:29:36,794 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:29:36,801 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=LoopHeads, 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;@6ce1b9ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:29:36,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 17:29:36,823 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:29:36,826 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2024-11-08 17:29:36,827 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:29:36,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:36,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:36,828 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:29:36,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash -425695547, now seen corresponding path program 1 times [2024-11-08 17:29:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:36,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136329782] [2024-11-08 17:29:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:36,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:37,350 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 17:29:37,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:37,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136329782] [2024-11-08 17:29:37,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136329782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:37,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:37,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:29:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659267733] [2024-11-08 17:29:37,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:37,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:29:37,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:29:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:29:37,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-08 17:29:37,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:29:37,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:37,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-08 17:29:37,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:38,354 INFO L124 PetriNetUnfolderBase]: 4395/6250 cut-off events. [2024-11-08 17:29:38,355 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2024-11-08 17:29:38,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12238 conditions, 6250 events. 4395/6250 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 32211 event pairs, 1080 based on Foata normal form. 152/6030 useless extension candidates. Maximal degree in co-relation 10875. Up to 4714 conditions per place. [2024-11-08 17:29:38,433 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 48 selfloop transitions, 3 changer transitions 2/68 dead transitions. [2024-11-08 17:29:38,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 287 flow [2024-11-08 17:29:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:29:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:29:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-08 17:29:38,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2024-11-08 17:29:38,452 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 118 flow. Second operand 3 states and 113 transitions. [2024-11-08 17:29:38,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 287 flow [2024-11-08 17:29:38,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 257 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 17:29:38,473 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 125 flow [2024-11-08 17:29:38,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2024-11-08 17:29:38,481 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-08 17:29:38,483 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 125 flow [2024-11-08 17:29:38,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:29:38,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:38,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:38,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:29:38,485 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:29:38,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1188468137, now seen corresponding path program 1 times [2024-11-08 17:29:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:38,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556146405] [2024-11-08 17:29:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:29:38,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:38,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556146405] [2024-11-08 17:29:38,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556146405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:38,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:38,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:29:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556727649] [2024-11-08 17:29:38,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:38,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:29:38,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:29:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:29:38,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-11-08 17:29:38,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2024-11-08 17:29:38,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:38,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-11-08 17:29:38,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:41,881 INFO L124 PetriNetUnfolderBase]: 18348/24437 cut-off events. [2024-11-08 17:29:41,881 INFO L125 PetriNetUnfolderBase]: For 2300/2322 co-relation queries the response was YES. [2024-11-08 17:29:41,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51799 conditions, 24437 events. 18348/24437 cut-off events. For 2300/2322 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 136288 event pairs, 5223 based on Foata normal form. 0/22482 useless extension candidates. Maximal degree in co-relation 7448. Up to 12108 conditions per place. [2024-11-08 17:29:42,101 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 129 selfloop transitions, 18 changer transitions 0/156 dead transitions. [2024-11-08 17:29:42,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 156 transitions, 688 flow [2024-11-08 17:29:42,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:29:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:29:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-11-08 17:29:42,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7147435897435898 [2024-11-08 17:29:42,111 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 125 flow. Second operand 6 states and 223 transitions. [2024-11-08 17:29:42,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 156 transitions, 688 flow [2024-11-08 17:29:42,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 156 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:29:42,116 INFO L231 Difference]: Finished difference. Result has 55 places, 66 transitions, 253 flow [2024-11-08 17:29:42,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=55, PETRI_TRANSITIONS=66} [2024-11-08 17:29:42,119 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-08 17:29:42,119 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 66 transitions, 253 flow [2024-11-08 17:29:42,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2024-11-08 17:29:42,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:42,120 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:42,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:29:42,120 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:29:42,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1060330717, now seen corresponding path program 1 times [2024-11-08 17:29:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:42,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668403599] [2024-11-08 17:29:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:29:42,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:42,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668403599] [2024-11-08 17:29:42,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668403599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:42,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:42,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:29:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534400754] [2024-11-08 17:29:42,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:42,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:29:42,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:29:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:29:42,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-11-08 17:29:42,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:29:42,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:42,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-11-08 17:29:42,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:47,848 INFO L124 PetriNetUnfolderBase]: 36046/46351 cut-off events. [2024-11-08 17:29:47,848 INFO L125 PetriNetUnfolderBase]: For 29797/29797 co-relation queries the response was YES. [2024-11-08 17:29:47,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125823 conditions, 46351 events. 36046/46351 cut-off events. For 29797/29797 co-relation queries the response was YES. Maximal size of possible extension queue 1580. Compared 244522 event pairs, 13921 based on Foata normal form. 528/46623 useless extension candidates. Maximal degree in co-relation 30132. Up to 26821 conditions per place. [2024-11-08 17:29:48,344 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 119 selfloop transitions, 19 changer transitions 0/145 dead transitions. [2024-11-08 17:29:48,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 145 transitions, 794 flow [2024-11-08 17:29:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:29:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:29:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-08 17:29:48,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-11-08 17:29:48,350 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 253 flow. Second operand 5 states and 175 transitions. [2024-11-08 17:29:48,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 145 transitions, 794 flow [2024-11-08 17:29:48,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 145 transitions, 794 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:29:48,417 INFO L231 Difference]: Finished difference. Result has 62 places, 79 transitions, 401 flow [2024-11-08 17:29:48,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=62, PETRI_TRANSITIONS=79} [2024-11-08 17:29:48,419 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-11-08 17:29:48,420 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 79 transitions, 401 flow [2024-11-08 17:29:48,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:29:48,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:48,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:48,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:29:48,423 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:29:48,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash -87593489, now seen corresponding path program 2 times [2024-11-08 17:29:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:48,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137022928] [2024-11-08 17:29:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:48,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:29:48,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137022928] [2024-11-08 17:29:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137022928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:48,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:48,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:29:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327459643] [2024-11-08 17:29:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:48,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:29:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:48,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:29:48,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:29:48,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-11-08 17:29:48,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 79 transitions, 401 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 17:29:48,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:48,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-11-08 17:29:48,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:53,343 INFO L124 PetriNetUnfolderBase]: 34750/46351 cut-off events. [2024-11-08 17:29:53,344 INFO L125 PetriNetUnfolderBase]: For 56435/56916 co-relation queries the response was YES. [2024-11-08 17:29:53,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143705 conditions, 46351 events. 34750/46351 cut-off events. For 56435/56916 co-relation queries the response was YES. Maximal size of possible extension queue 1839. Compared 276528 event pairs, 3982 based on Foata normal form. 1694/47207 useless extension candidates. Maximal degree in co-relation 46922. Up to 19918 conditions per place. [2024-11-08 17:29:53,878 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 178 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-11-08 17:29:53,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 207 transitions, 1266 flow [2024-11-08 17:29:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:29:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:29:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 257 transitions. [2024-11-08 17:29:53,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7060439560439561 [2024-11-08 17:29:53,882 INFO L175 Difference]: Start difference. First operand has 62 places, 79 transitions, 401 flow. Second operand 7 states and 257 transitions. [2024-11-08 17:29:53,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 207 transitions, 1266 flow [2024-11-08 17:29:54,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 207 transitions, 1256 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-08 17:29:54,301 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 512 flow [2024-11-08 17:29:54,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=512, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2024-11-08 17:29:54,302 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-08 17:29:54,303 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 512 flow [2024-11-08 17:29:54,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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 17:29:54,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:54,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:54,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:29:54,305 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:29:54,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash 43371581, now seen corresponding path program 2 times [2024-11-08 17:29:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298041791] [2024-11-08 17:29:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:29:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298041791] [2024-11-08 17:29:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298041791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:29:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:29:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:29:54,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119835103] [2024-11-08 17:29:54,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:29:54,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:29:54,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:54,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:29:54,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:29:54,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-08 17:29:54,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 512 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 17:29:54,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:54,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-08 17:29:54,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:30:01,416 INFO L124 PetriNetUnfolderBase]: 35373/47118 cut-off events. [2024-11-08 17:30:01,416 INFO L125 PetriNetUnfolderBase]: For 79631/80591 co-relation queries the response was YES. [2024-11-08 17:30:01,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152186 conditions, 47118 events. 35373/47118 cut-off events. For 79631/80591 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 284391 event pairs, 10950 based on Foata normal form. 219/45100 useless extension candidates. Maximal degree in co-relation 110722. Up to 25756 conditions per place. [2024-11-08 17:30:01,833 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 152 selfloop transitions, 20 changer transitions 0/187 dead transitions. [2024-11-08 17:30:01,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 187 transitions, 1222 flow [2024-11-08 17:30:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:30:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:30:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2024-11-08 17:30:01,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6593406593406593 [2024-11-08 17:30:01,835 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 512 flow. Second operand 7 states and 240 transitions. [2024-11-08 17:30:01,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 187 transitions, 1222 flow [2024-11-08 17:30:02,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 187 transitions, 1215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:30:02,249 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 619 flow [2024-11-08 17:30:02,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=619, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-11-08 17:30:02,250 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-11-08 17:30:02,251 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 619 flow [2024-11-08 17:30:02,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 17:30:02,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:30:02,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:30:02,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:30:02,252 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:30:02,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:30:02,252 INFO L85 PathProgramCache]: Analyzing trace with hash -205590003, now seen corresponding path program 3 times [2024-11-08 17:30:02,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:30:02,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812365202] [2024-11-08 17:30:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:30:02,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:30:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:30:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:02,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:30:02,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812365202] [2024-11-08 17:30:02,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812365202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:30:02,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768257803] [2024-11-08 17:30:02,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:30:02,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:30:02,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:30:02,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:30:02,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:30:02,522 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:30:02,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:30:02,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:30:02,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:30:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:02,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:30:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:02,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768257803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:30:02,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:30:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-08 17:30:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043651534] [2024-11-08 17:30:02,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:30:02,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:30:02,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:30:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:30:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:30:02,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-11-08 17:30:02,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 619 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 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 17:30:02,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:30:02,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-11-08 17:30:02,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:30:11,000 INFO L124 PetriNetUnfolderBase]: 50158/65299 cut-off events. [2024-11-08 17:30:11,000 INFO L125 PetriNetUnfolderBase]: For 147532/147532 co-relation queries the response was YES. [2024-11-08 17:30:11,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223029 conditions, 65299 events. 50158/65299 cut-off events. For 147532/147532 co-relation queries the response was YES. Maximal size of possible extension queue 2420. Compared 378335 event pairs, 2556 based on Foata normal form. 2130/67285 useless extension candidates. Maximal degree in co-relation 182893. Up to 11715 conditions per place. [2024-11-08 17:30:11,479 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 279 selfloop transitions, 66 changer transitions 0/352 dead transitions. [2024-11-08 17:30:11,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 352 transitions, 2470 flow [2024-11-08 17:30:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:30:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 17:30:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 445 transitions. [2024-11-08 17:30:11,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6112637362637363 [2024-11-08 17:30:11,483 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 619 flow. Second operand 14 states and 445 transitions. [2024-11-08 17:30:11,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 352 transitions, 2470 flow [2024-11-08 17:30:13,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 352 transitions, 2435 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-08 17:30:13,194 INFO L231 Difference]: Finished difference. Result has 101 places, 125 transitions, 1219 flow [2024-11-08 17:30:13,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1219, PETRI_PLACES=101, PETRI_TRANSITIONS=125} [2024-11-08 17:30:13,195 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-11-08 17:30:13,195 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 125 transitions, 1219 flow [2024-11-08 17:30:13,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 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 17:30:13,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:30:13,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:30:13,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:30:13,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecd5868-4dc6-40f9-81dd-8b9a516252e0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:30:13,397 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:30:13,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:30:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash -320333853, now seen corresponding path program 3 times [2024-11-08 17:30:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:30:13,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662525709] [2024-11-08 17:30:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:30:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:30:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:30:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:13,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:30:13,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662525709] [2024-11-08 17:30:13,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662525709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:30:13,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:30:13,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:30:13,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427724772] [2024-11-08 17:30:13,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:30:13,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:30:13,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:30:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:30:13,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:30:13,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-08 17:30:13,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 125 transitions, 1219 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 17:30:13,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:30:13,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-08 17:30:13,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:30:21,512 INFO L124 PetriNetUnfolderBase]: 39981/53722 cut-off events. [2024-11-08 17:30:21,512 INFO L125 PetriNetUnfolderBase]: For 226923/228292 co-relation queries the response was YES. [2024-11-08 17:30:21,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204737 conditions, 53722 events. 39981/53722 cut-off events. For 226923/228292 co-relation queries the response was YES. Maximal size of possible extension queue 2204. Compared 328312 event pairs, 13854 based on Foata normal form. 360/52514 useless extension candidates. Maximal degree in co-relation 185272. Up to 27270 conditions per place. [2024-11-08 17:30:22,125 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 167 selfloop transitions, 32 changer transitions 2/218 dead transitions. [2024-11-08 17:30:22,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 218 transitions, 2051 flow [2024-11-08 17:30:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:30:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:30:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-11-08 17:30:22,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6318681318681318 [2024-11-08 17:30:22,128 INFO L175 Difference]: Start difference. First operand has 101 places, 125 transitions, 1219 flow. Second operand 7 states and 230 transitions. [2024-11-08 17:30:22,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 218 transitions, 2051 flow [2024-11-08 17:30:24,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 218 transitions, 1961 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-11-08 17:30:24,499 INFO L231 Difference]: Finished difference. Result has 111 places, 129 transitions, 1313 flow [2024-11-08 17:30:24,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1313, PETRI_PLACES=111, PETRI_TRANSITIONS=129} [2024-11-08 17:30:24,500 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 59 predicate places. [2024-11-08 17:30:24,501 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 129 transitions, 1313 flow [2024-11-08 17:30:24,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 17:30:24,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:30:24,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:30:24,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:30:24,502 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:30:24,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:30:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1930174719, now seen corresponding path program 4 times [2024-11-08 17:30:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:30:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414121292] [2024-11-08 17:30:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:30:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:30:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:30:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:30:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414121292] [2024-11-08 17:30:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414121292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:30:24,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:30:24,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:30:24,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560742746] [2024-11-08 17:30:24,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:30:24,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:30:24,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:30:24,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:30:24,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:30:24,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-11-08 17:30:24,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 129 transitions, 1313 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 17:30:24,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:30:24,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-11-08 17:30:24,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:30:34,354 INFO L124 PetriNetUnfolderBase]: 52185/68000 cut-off events. [2024-11-08 17:30:34,355 INFO L125 PetriNetUnfolderBase]: For 277062/277062 co-relation queries the response was YES. [2024-11-08 17:30:34,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259554 conditions, 68000 events. 52185/68000 cut-off events. For 277062/277062 co-relation queries the response was YES. Maximal size of possible extension queue 2562. Compared 393736 event pairs, 19137 based on Foata normal form. 576/68295 useless extension candidates. Maximal degree in co-relation 245721. Up to 37639 conditions per place. [2024-11-08 17:30:34,900 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 163 selfloop transitions, 48 changer transitions 0/218 dead transitions. [2024-11-08 17:30:34,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 218 transitions, 2137 flow [2024-11-08 17:30:34,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:30:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:30:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-08 17:30:34,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6442307692307693 [2024-11-08 17:30:34,902 INFO L175 Difference]: Start difference. First operand has 111 places, 129 transitions, 1313 flow. Second operand 6 states and 201 transitions. [2024-11-08 17:30:34,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 218 transitions, 2137 flow [2024-11-08 17:30:38,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 218 transitions, 2071 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-08 17:30:38,029 INFO L231 Difference]: Finished difference. Result has 118 places, 132 transitions, 1471 flow [2024-11-08 17:30:38,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1471, PETRI_PLACES=118, PETRI_TRANSITIONS=132} [2024-11-08 17:30:38,030 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-11-08 17:30:38,031 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 132 transitions, 1471 flow [2024-11-08 17:30:38,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 17:30:38,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:30:38,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:30:38,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:30:38,032 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:30:38,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:30:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash 695442079, now seen corresponding path program 4 times [2024-11-08 17:30:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:30:38,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485839254] [2024-11-08 17:30:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:30:38,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:30:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:30:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:30:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:30:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485839254] [2024-11-08 17:30:38,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485839254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:30:38,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:30:38,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:30:38,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072433260] [2024-11-08 17:30:38,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:30:38,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:30:38,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:30:38,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:30:38,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:30:38,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-11-08 17:30:38,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 132 transitions, 1471 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 17:30:38,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:30:38,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-11-08 17:30:38,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand