./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:26:09,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:26:09,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:26:09,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:26:09,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:26:09,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:26:09,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:26:09,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:26:09,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:26:09,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:26:09,711 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:26:09,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:26:09,713 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:26:09,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:26:09,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:26:09,715 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:26:09,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:26:09,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:26:09,717 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:26:09,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:26:09,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:26:09,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:26:09,727 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:26:09,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:26:09,728 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:26:09,729 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:26:09,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:26:09,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:26:09,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:09,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:26:09,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:26:09,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:26:09,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:26:09,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:26:09,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:26:09,735 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:26:09,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:26:09,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:26:09,736 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:26:09,736 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_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2023-11-06 22:26:10,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:26:10,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:26:10,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:26:10,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:26:10,078 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:26:10,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:26:13,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:26:13,814 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:26:13,815 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:26:13,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/data/e04567816/79e94e84e1084adfbada8a2ef1e44fd7/FLAG5e5e40556 [2023-11-06 22:26:13,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/data/e04567816/79e94e84e1084adfbada8a2ef1e44fd7 [2023-11-06 22:26:13,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:26:13,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:26:13,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:13,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:26:13,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:26:13,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:13" (1/1) ... [2023-11-06 22:26:13,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45df4301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:13, skipping insertion in model container [2023-11-06 22:26:13,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:13" (1/1) ... [2023-11-06 22:26:13,955 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:26:14,130 WARN L240 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_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-06 22:26:14,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:14,548 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:26:14,566 WARN L240 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_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-06 22:26:14,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:14,710 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:26:14,711 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:26:14,720 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:26:14,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14 WrapperNode [2023-11-06 22:26:14,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:14,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:14,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:26:14,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:26:14,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,816 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-06 22:26:14,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:14,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:26:14,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:26:14,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:26:14,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:26:14,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:26:14,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:26:14,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:26:14,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (1/1) ... [2023-11-06 22:26:14,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:14,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:14,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ede71a-4cd5-4a2d-9130-4b6fa1be4268/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:26:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:26:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:26:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:26:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:26:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:26:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:26:14,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:26:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:26:14,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:26:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:26:14,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:26:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:26:14,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:26:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:26:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:26:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:26:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:26:14,960 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:26:15,150 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:26:15,153 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:26:15,622 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:26:15,908 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:26:15,908 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:26:15,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:15 BoogieIcfgContainer [2023-11-06 22:26:15,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:26:15,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:26:15,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:26:15,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:26:15,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:13" (1/3) ... [2023-11-06 22:26:15,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eadb639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:15, skipping insertion in model container [2023-11-06 22:26:15,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:14" (2/3) ... [2023-11-06 22:26:15,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eadb639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:15, skipping insertion in model container [2023-11-06 22:26:15,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:15" (3/3) ... [2023-11-06 22:26:15,928 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:26:15,948 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:26:15,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:26:15,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:26:15,961 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:26:16,069 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:26:16,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 284 flow [2023-11-06 22:26:16,242 INFO L124 PetriNetUnfolderBase]: 2/130 cut-off events. [2023-11-06 22:26:16,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:16,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-06 22:26:16,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 284 flow [2023-11-06 22:26:16,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 130 transitions, 272 flow [2023-11-06 22:26:16,266 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:26:16,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 130 transitions, 272 flow [2023-11-06 22:26:16,292 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 130 transitions, 272 flow [2023-11-06 22:26:16,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 272 flow [2023-11-06 22:26:16,332 INFO L124 PetriNetUnfolderBase]: 2/130 cut-off events. [2023-11-06 22:26:16,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:16,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-06 22:26:16,338 INFO L119 LiptonReduction]: Number of co-enabled transitions 3518 [2023-11-06 22:26:21,875 INFO L134 LiptonReduction]: Checked pairs total: 9407 [2023-11-06 22:26:21,875 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-06 22:26:21,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:21,924 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6a689056, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:21,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:26:21,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:26:21,932 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-06 22:26:21,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:21,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:21,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:26:21,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:26:21,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash 559487, now seen corresponding path program 1 times [2023-11-06 22:26:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:21,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266109616] [2023-11-06 22:26:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:21,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:22,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266109616] [2023-11-06 22:26:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266109616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:22,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:22,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:26:22,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579977148] [2023-11-06 22:26:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:22,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:22,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:22,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 242 [2023-11-06 22:26:22,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-11-06 22:26:22,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:22,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 242 [2023-11-06 22:26:22,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:24,605 INFO L124 PetriNetUnfolderBase]: 5879/8049 cut-off events. [2023-11-06 22:26:24,606 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 22:26:24,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16193 conditions, 8049 events. 5879/8049 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 39486 event pairs, 3031 based on Foata normal form. 0/7711 useless extension candidates. Maximal degree in co-relation 16181. Up to 6367 conditions per place. [2023-11-06 22:26:24,697 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 43 selfloop transitions, 2 changer transitions 2/51 dead transitions. [2023-11-06 22:26:24,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 217 flow [2023-11-06 22:26:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:24,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2023-11-06 22:26:24,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564738292011019 [2023-11-06 22:26:24,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2023-11-06 22:26:24,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2023-11-06 22:26:24,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:24,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2023-11-06 22:26:24,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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) [2023-11-06 22:26:24,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2023-11-06 22:26:24,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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) [2023-11-06 22:26:24,754 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 404 transitions. [2023-11-06 22:26:24,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 217 flow [2023-11-06 22:26:24,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:26:24,765 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 70 flow [2023-11-06 22:26:24,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-11-06 22:26:24,775 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-11-06 22:26:24,775 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 70 flow [2023-11-06 22:26:24,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-11-06 22:26:24,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:24,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:24,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:26:24,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:26:24,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:24,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1525590056, now seen corresponding path program 1 times [2023-11-06 22:26:24,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:24,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375634827] [2023-11-06 22:26:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:24,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375634827] [2023-11-06 22:26:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375634827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:25,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:25,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:25,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854697180] [2023-11-06 22:26:25,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:25,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:26:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:26:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:25,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 242 [2023-11-06 22:26:25,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-06 22:26:25,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:25,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 242 [2023-11-06 22:26:25,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:31,112 INFO L124 PetriNetUnfolderBase]: 24574/33203 cut-off events. [2023-11-06 22:26:31,113 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2023-11-06 22:26:31,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68444 conditions, 33203 events. 24574/33203 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 181430 event pairs, 8056 based on Foata normal form. 1374/34577 useless extension candidates. Maximal degree in co-relation 68434. Up to 14653 conditions per place. [2023-11-06 22:26:31,371 INFO L140 encePairwiseOnDemand]: 231/242 looper letters, 44 selfloop transitions, 9 changer transitions 35/88 dead transitions. [2023-11-06 22:26:31,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 88 transitions, 374 flow [2023-11-06 22:26:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:26:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:26:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-11-06 22:26:31,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49586776859504134 [2023-11-06 22:26:31,377 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-11-06 22:26:31,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-11-06 22:26:31,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:31,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-11-06 22:26:31,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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) [2023-11-06 22:26:31,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:26:31,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:26:31,390 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 70 flow. Second operand 5 states and 600 transitions. [2023-11-06 22:26:31,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 88 transitions, 374 flow [2023-11-06 22:26:31,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 88 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:26:31,398 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 156 flow [2023-11-06 22:26:31,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-11-06 22:26:31,407 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-11-06 22:26:31,407 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 156 flow [2023-11-06 22:26:31,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-06 22:26:31,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:31,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:31,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:26:31,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:26:31,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:31,410 INFO L85 PathProgramCache]: Analyzing trace with hash -48705579, now seen corresponding path program 1 times [2023-11-06 22:26:31,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:31,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930541018] [2023-11-06 22:26:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:31,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:31,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930541018] [2023-11-06 22:26:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930541018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:31,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:31,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:31,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679230379] [2023-11-06 22:26:31,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:31,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:26:31,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:31,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:26:31,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:31,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242 [2023-11-06 22:26:31,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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) [2023-11-06 22:26:31,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:31,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242 [2023-11-06 22:26:31,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:36,103 INFO L124 PetriNetUnfolderBase]: 17655/24853 cut-off events. [2023-11-06 22:26:36,103 INFO L125 PetriNetUnfolderBase]: For 18585/19002 co-relation queries the response was YES. [2023-11-06 22:26:36,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66725 conditions, 24853 events. 17655/24853 cut-off events. For 18585/19002 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 148337 event pairs, 4589 based on Foata normal form. 1211/25506 useless extension candidates. Maximal degree in co-relation 66711. Up to 15450 conditions per place. [2023-11-06 22:26:36,415 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 41 selfloop transitions, 3 changer transitions 31/81 dead transitions. [2023-11-06 22:26:36,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 468 flow [2023-11-06 22:26:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:26:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:26:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 623 transitions. [2023-11-06 22:26:36,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148760330578512 [2023-11-06 22:26:36,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 623 transitions. [2023-11-06 22:26:36,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 623 transitions. [2023-11-06 22:26:36,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:36,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 623 transitions. [2023-11-06 22:26:36,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 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) [2023-11-06 22:26:36,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:26:36,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:26:36,445 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 156 flow. Second operand 5 states and 623 transitions. [2023-11-06 22:26:36,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 468 flow [2023-11-06 22:26:36,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 81 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:26:36,520 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 153 flow [2023-11-06 22:26:36,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-11-06 22:26:36,522 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-11-06 22:26:36,527 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 153 flow [2023-11-06 22:26:36,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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) [2023-11-06 22:26:36,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:36,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:36,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:26:36,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:26:36,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:36,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2008662763, now seen corresponding path program 1 times [2023-11-06 22:26:36,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:36,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575235741] [2023-11-06 22:26:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:36,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:36,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:36,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575235741] [2023-11-06 22:26:36,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575235741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:36,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:36,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:26:36,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125851509] [2023-11-06 22:26:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:36,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:26:36,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:36,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:26:36,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:36,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 242 [2023-11-06 22:26:36,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2023-11-06 22:26:36,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:36,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 242 [2023-11-06 22:26:36,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:40,569 INFO L124 PetriNetUnfolderBase]: 19719/26892 cut-off events. [2023-11-06 22:26:40,569 INFO L125 PetriNetUnfolderBase]: For 27544/27544 co-relation queries the response was YES. [2023-11-06 22:26:40,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73929 conditions, 26892 events. 19719/26892 cut-off events. For 27544/27544 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 147644 event pairs, 2816 based on Foata normal form. 896/27788 useless extension candidates. Maximal degree in co-relation 73912. Up to 11865 conditions per place. [2023-11-06 22:26:40,734 INFO L140 encePairwiseOnDemand]: 231/242 looper letters, 66 selfloop transitions, 13 changer transitions 44/123 dead transitions. [2023-11-06 22:26:40,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 123 transitions, 697 flow [2023-11-06 22:26:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:40,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:26:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2023-11-06 22:26:40,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49055489964580873 [2023-11-06 22:26:40,739 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2023-11-06 22:26:40,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2023-11-06 22:26:40,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:40,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2023-11-06 22:26:40,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 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) [2023-11-06 22:26:40,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:26:40,751 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:26:40,752 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 153 flow. Second operand 7 states and 831 transitions. [2023-11-06 22:26:40,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 123 transitions, 697 flow [2023-11-06 22:26:41,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 123 transitions, 679 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:26:41,315 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 268 flow [2023-11-06 22:26:41,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-06 22:26:41,318 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-11-06 22:26:41,319 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 268 flow [2023-11-06 22:26:41,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2023-11-06 22:26:41,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:41,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:41,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:26:41,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:26:41,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash 438015284, now seen corresponding path program 1 times [2023-11-06 22:26:41,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:41,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138972666] [2023-11-06 22:26:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:41,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:41,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:41,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138972666] [2023-11-06 22:26:41,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138972666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:41,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:41,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:26:41,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110451800] [2023-11-06 22:26:41,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:41,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:26:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:26:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:41,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 242 [2023-11-06 22:26:41,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-06 22:26:41,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:41,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 242 [2023-11-06 22:26:41,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:45,643 INFO L124 PetriNetUnfolderBase]: 19051/25997 cut-off events. [2023-11-06 22:26:45,643 INFO L125 PetriNetUnfolderBase]: For 52413/52413 co-relation queries the response was YES. [2023-11-06 22:26:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83248 conditions, 25997 events. 19051/25997 cut-off events. For 52413/52413 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 141319 event pairs, 1869 based on Foata normal form. 805/26802 useless extension candidates. Maximal degree in co-relation 83227. Up to 11418 conditions per place. [2023-11-06 22:26:45,800 INFO L140 encePairwiseOnDemand]: 231/242 looper letters, 69 selfloop transitions, 20 changer transitions 44/133 dead transitions. [2023-11-06 22:26:45,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 133 transitions, 946 flow [2023-11-06 22:26:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:26:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 827 transitions. [2023-11-06 22:26:45,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881936245572609 [2023-11-06 22:26:45,806 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 827 transitions. [2023-11-06 22:26:45,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 827 transitions. [2023-11-06 22:26:45,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:45,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 827 transitions. [2023-11-06 22:26:45,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 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) [2023-11-06 22:26:45,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:26:45,816 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:26:45,816 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 268 flow. Second operand 7 states and 827 transitions. [2023-11-06 22:26:45,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 133 transitions, 946 flow [2023-11-06 22:26:46,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 133 transitions, 934 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:46,251 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 471 flow [2023-11-06 22:26:46,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-11-06 22:26:46,252 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2023-11-06 22:26:46,252 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 471 flow [2023-11-06 22:26:46,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-06 22:26:46,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:46,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:26:46,254 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:26:46,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash 419590675, now seen corresponding path program 1 times [2023-11-06 22:26:46,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:46,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416238693] [2023-11-06 22:26:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:46,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:46,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416238693] [2023-11-06 22:26:46,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416238693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:46,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:46,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:26:46,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884419480] [2023-11-06 22:26:46,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:46,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:26:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:46,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:26:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:46,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 242 [2023-11-06 22:26:46,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2023-11-06 22:26:46,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:46,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 242 [2023-11-06 22:26:46,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:52,074 INFO L124 PetriNetUnfolderBase]: 26100/35784 cut-off events. [2023-11-06 22:26:52,074 INFO L125 PetriNetUnfolderBase]: For 122852/122852 co-relation queries the response was YES. [2023-11-06 22:26:52,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124819 conditions, 35784 events. 26100/35784 cut-off events. For 122852/122852 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 205189 event pairs, 4466 based on Foata normal form. 963/36747 useless extension candidates. Maximal degree in co-relation 124790. Up to 13446 conditions per place. [2023-11-06 22:26:52,281 INFO L140 encePairwiseOnDemand]: 231/242 looper letters, 70 selfloop transitions, 29 changer transitions 42/141 dead transitions. [2023-11-06 22:26:52,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 141 transitions, 1141 flow [2023-11-06 22:26:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:26:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 830 transitions. [2023-11-06 22:26:52,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899645808736718 [2023-11-06 22:26:52,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 830 transitions. [2023-11-06 22:26:52,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 830 transitions. [2023-11-06 22:26:52,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:52,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 830 transitions. [2023-11-06 22:26:52,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 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) [2023-11-06 22:26:52,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:26:52,304 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:26:52,304 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 471 flow. Second operand 7 states and 830 transitions. [2023-11-06 22:26:52,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 141 transitions, 1141 flow [2023-11-06 22:26:52,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 141 transitions, 1117 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-06 22:26:52,937 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 658 flow [2023-11-06 22:26:52,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=658, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2023-11-06 22:26:52,938 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2023-11-06 22:26:52,938 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 658 flow [2023-11-06 22:26:52,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2023-11-06 22:26:52,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:52,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:52,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:26:52,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:26:52,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash 681577392, now seen corresponding path program 1 times [2023-11-06 22:26:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:52,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884581624] [2023-11-06 22:26:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:52,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:53,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:53,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884581624] [2023-11-06 22:26:53,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884581624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:53,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:53,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:26:53,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46389550] [2023-11-06 22:26:53,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:53,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:26:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:26:53,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:53,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242 [2023-11-06 22:26:53,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 658 flow. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2023-11-06 22:26:53,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:53,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242 [2023-11-06 22:26:53,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:56,858 INFO L124 PetriNetUnfolderBase]: 14632/21619 cut-off events. [2023-11-06 22:26:56,858 INFO L125 PetriNetUnfolderBase]: For 99743/105130 co-relation queries the response was YES. [2023-11-06 22:26:56,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75384 conditions, 21619 events. 14632/21619 cut-off events. For 99743/105130 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 142724 event pairs, 2497 based on Foata normal form. 2941/24181 useless extension candidates. Maximal degree in co-relation 75349. Up to 13820 conditions per place. [2023-11-06 22:26:57,035 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 127 selfloop transitions, 10 changer transitions 0/157 dead transitions. [2023-11-06 22:26:57,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 157 transitions, 1808 flow [2023-11-06 22:26:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:26:57,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:26:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 633 transitions. [2023-11-06 22:26:57,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231404958677686 [2023-11-06 22:26:57,039 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 633 transitions. [2023-11-06 22:26:57,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 633 transitions. [2023-11-06 22:26:57,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:57,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 633 transitions. [2023-11-06 22:26:57,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-11-06 22:26:57,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:26:57,047 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:26:57,047 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 658 flow. Second operand 5 states and 633 transitions. [2023-11-06 22:26:57,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 157 transitions, 1808 flow [2023-11-06 22:26:57,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 157 transitions, 1776 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-06 22:26:57,192 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 719 flow [2023-11-06 22:26:57,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=719, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2023-11-06 22:26:57,193 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2023-11-06 22:26:57,193 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 719 flow [2023-11-06 22:26:57,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2023-11-06 22:26:57,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:57,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:57,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:26:57,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:26:57,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:57,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1841149306, now seen corresponding path program 1 times [2023-11-06 22:26:57,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:57,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083311952] [2023-11-06 22:26:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:57,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:57,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:57,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083311952] [2023-11-06 22:26:57,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083311952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:57,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:57,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:26:57,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822333354] [2023-11-06 22:26:57,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:57,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:26:57,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:57,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:26:57,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:57,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 242 [2023-11-06 22:26:57,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 719 flow. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 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) [2023-11-06 22:26:57,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:57,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 242 [2023-11-06 22:26:57,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:02,864 INFO L124 PetriNetUnfolderBase]: 23797/35467 cut-off events. [2023-11-06 22:27:02,864 INFO L125 PetriNetUnfolderBase]: For 165159/169623 co-relation queries the response was YES. [2023-11-06 22:27:03,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148188 conditions, 35467 events. 23797/35467 cut-off events. For 165159/169623 co-relation queries the response was YES. Maximal size of possible extension queue 1601. Compared 252603 event pairs, 11270 based on Foata normal form. 2179/36939 useless extension candidates. Maximal degree in co-relation 148152. Up to 17932 conditions per place. [2023-11-06 22:27:03,234 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 76 selfloop transitions, 9 changer transitions 35/132 dead transitions. [2023-11-06 22:27:03,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 132 transitions, 1367 flow [2023-11-06 22:27:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:27:03,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:27:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-11-06 22:27:03,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515702479338843 [2023-11-06 22:27:03,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-11-06 22:27:03,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-11-06 22:27:03,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:03,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-11-06 22:27:03,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 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) [2023-11-06 22:27:03,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:27:03,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-06 22:27:03,243 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 719 flow. Second operand 5 states and 624 transitions. [2023-11-06 22:27:03,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 132 transitions, 1367 flow [2023-11-06 22:27:03,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 132 transitions, 1354 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:03,579 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 707 flow [2023-11-06 22:27:03,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=707, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2023-11-06 22:27:03,580 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2023-11-06 22:27:03,580 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 707 flow [2023-11-06 22:27:03,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 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) [2023-11-06 22:27:03,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:03,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:03,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:27:03,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:27:03,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1127980462, now seen corresponding path program 1 times [2023-11-06 22:27:03,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:03,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781185202] [2023-11-06 22:27:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:03,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:03,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781185202] [2023-11-06 22:27:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781185202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:03,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:27:03,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395816519] [2023-11-06 22:27:03,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:03,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:27:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:03,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:27:03,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:27:03,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242 [2023-11-06 22:27:03,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 707 flow. Second operand has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 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) [2023-11-06 22:27:03,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:03,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242 [2023-11-06 22:27:03,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:07,698 INFO L124 PetriNetUnfolderBase]: 15285/23369 cut-off events. [2023-11-06 22:27:07,698 INFO L125 PetriNetUnfolderBase]: For 102531/107957 co-relation queries the response was YES. [2023-11-06 22:27:07,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93040 conditions, 23369 events. 15285/23369 cut-off events. For 102531/107957 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 168147 event pairs, 1596 based on Foata normal form. 3130/25926 useless extension candidates. Maximal degree in co-relation 93001. Up to 7899 conditions per place. [2023-11-06 22:27:07,845 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 167 selfloop transitions, 17 changer transitions 4/206 dead transitions. [2023-11-06 22:27:07,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 206 transitions, 2442 flow [2023-11-06 22:27:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:27:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:27:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 886 transitions. [2023-11-06 22:27:07,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230224321133412 [2023-11-06 22:27:07,850 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 886 transitions. [2023-11-06 22:27:07,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 886 transitions. [2023-11-06 22:27:07,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:07,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 886 transitions. [2023-11-06 22:27:07,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2023-11-06 22:27:07,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:27:07,859 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 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) [2023-11-06 22:27:07,859 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 707 flow. Second operand 7 states and 886 transitions. [2023-11-06 22:27:07,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 206 transitions, 2442 flow [2023-11-06 22:27:08,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 206 transitions, 2396 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-06 22:27:08,204 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 814 flow [2023-11-06 22:27:08,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=814, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-06 22:27:08,205 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2023-11-06 22:27:08,206 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 814 flow [2023-11-06 22:27:08,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 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) [2023-11-06 22:27:08,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:08,206 INFO L208 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] [2023-11-06 22:27:08,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:27:08,206 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 22:27:08,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash -636667649, now seen corresponding path program 1 times [2023-11-06 22:27:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:08,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172806549] [2023-11-06 22:27:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:08,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:08,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172806549] [2023-11-06 22:27:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172806549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:08,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:08,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:27:08,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208776868] [2023-11-06 22:27:08,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:08,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:08,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:27:08,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 242 [2023-11-06 22:27:08,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2023-11-06 22:27:08,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:08,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 242 [2023-11-06 22:27:08,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand