./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d9d31939acfea5ee9b43b1f06257671943c7251c27c351c5e445aa6495fd098 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:18:23,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:18:23,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:18:23,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:18:23,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:18:23,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:18:23,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:18:23,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:18:23,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:18:23,670 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:18:23,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:18:23,671 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:18:23,672 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:18:23,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:18:23,673 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:18:23,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:18:23,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:18:23,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:18:23,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:18:23,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:18:23,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:18:23,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:18:23,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:18:23,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:18:23,681 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:18:23,681 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:18:23,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:18:23,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:18:23,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:18:23,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:18:23,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:18:23,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:18:23,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:23,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:18:23,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:18:23,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:18:23,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:18:23,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:18:23,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:18:23,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:18:23,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:18:23,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:18:23,688 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_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d9d31939acfea5ee9b43b1f06257671943c7251c27c351c5e445aa6495fd098 [2024-10-31 22:18:24,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:18:24,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:18:24,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:18:24,081 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:18:24,082 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:18:24,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c Unable to find full path for "g++" [2024-10-31 22:18:26,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:18:26,507 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:18:26,507 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c [2024-10-31 22:18:26,546 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/data/23abc740a/e2d3a1a47cf344e4873df6b0d1b0d30a/FLAG6ffa491d8 [2024-10-31 22:18:26,573 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/data/23abc740a/e2d3a1a47cf344e4873df6b0d1b0d30a [2024-10-31 22:18:26,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:18:26,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:18:26,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:26,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:18:26,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:18:26,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:26" (1/1) ... [2024-10-31 22:18:26,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c41d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:26, skipping insertion in model container [2024-10-31 22:18:26,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:26" (1/1) ... [2024-10-31 22:18:26,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:18:27,247 WARN L251 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_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c[38051,38064] [2024-10-31 22:18:27,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:27,454 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:18:27,473 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2024-10-31 22:18:27,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [150] [2024-10-31 22:18:27,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [164] [2024-10-31 22:18:27,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [284] [2024-10-31 22:18:27,478 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [322] [2024-10-31 22:18:27,479 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1825] [2024-10-31 22:18:27,479 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1834] [2024-10-31 22:18:27,479 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2200] [2024-10-31 22:18:27,479 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [2552] [2024-10-31 22:18:27,479 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2733] [2024-10-31 22:18:27,572 WARN L251 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_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c[38051,38064] [2024-10-31 22:18:27,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:27,658 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:18:27,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27 WrapperNode [2024-10-31 22:18:27,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:27,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:27,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:18:27,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:18:27,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,777 INFO L138 Inliner]: procedures = 92, calls = 338, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 816 [2024-10-31 22:18:27,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:27,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:18:27,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:18:27,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:18:27,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,886 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-10-31 22:18:27,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:18:27,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:18:27,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:18:27,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:18:27,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (1/1) ... [2024-10-31 22:18:27,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:28,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:28,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:28,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3a32e9-5fbc-4f6e-8e3c-46cab434f087/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:18:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:18:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-31 22:18:28,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-31 22:18:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-10-31 22:18:28,063 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-10-31 22:18:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-31 22:18:28,063 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-31 22:18:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-31 22:18:28,063 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-31 22:18:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-31 22:18:28,064 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-31 22:18:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-31 22:18:28,064 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-31 22:18:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-31 22:18:28,068 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-31 22:18:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-10-31 22:18:28,069 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-10-31 22:18:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-31 22:18:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-31 22:18:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-31 22:18:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-31 22:18:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-31 22:18:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-31 22:18:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-31 22:18:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-31 22:18:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-31 22:18:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-31 22:18:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-31 22:18:28,073 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-31 22:18:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-31 22:18:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-31 22:18:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-31 22:18:28,074 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-31 22:18:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-31 22:18:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-31 22:18:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:18:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:18:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:18:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:18:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 22:18:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 22:18:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 22:18:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 22:18:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 22:18:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-31 22:18:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-31 22:18:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-31 22:18:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-31 22:18:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-31 22:18:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-31 22:18:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-31 22:18:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-31 22:18:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-31 22:18:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-31 22:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-31 22:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2024-10-31 22:18:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2024-10-31 22:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-31 22:18:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-31 22:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-31 22:18:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-31 22:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-31 22:18:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-31 22:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:18:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-31 22:18:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-31 22:18:28,336 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:18:28,341 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:18:30,168 INFO L? ?]: Removed 429 outVars from TransFormulas that were not future-live. [2024-10-31 22:18:30,169 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:18:30,198 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:18:30,198 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:18:30,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:30 BoogieIcfgContainer [2024-10-31 22:18:30,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:18:30,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:18:30,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:18:30,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:18:30,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:18:26" (1/3) ... [2024-10-31 22:18:30,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fa3642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:30, skipping insertion in model container [2024-10-31 22:18:30,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:27" (2/3) ... [2024-10-31 22:18:30,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fa3642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:30, skipping insertion in model container [2024-10-31 22:18:30,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:30" (3/3) ... [2024-10-31 22:18:30,213 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product18.cil.c [2024-10-31 22:18:30,231 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:18:30,231 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:18:30,327 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:30,336 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23182524, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:30,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:18:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 426 states have (on average 1.7065727699530517) internal successors, (727), 449 states have internal predecessors, (727), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) [2024-10-31 22:18:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-31 22:18:30,374 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:30,375 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:30,376 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:30,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash -481021737, now seen corresponding path program 1 times [2024-10-31 22:18:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:30,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655535468] [2024-10-31 22:18:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:30,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:31,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:18:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:31,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:31,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 22:18:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:18:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655535468] [2024-10-31 22:18:32,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655535468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:32,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:32,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:18:32,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69750506] [2024-10-31 22:18:32,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:32,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:18:32,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:18:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:32,142 INFO L87 Difference]: Start difference. First operand has 541 states, 426 states have (on average 1.7065727699530517) internal successors, (727), 449 states have internal predecessors, (727), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 22:18:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:39,565 INFO L93 Difference]: Finished difference Result 1224 states and 2085 transitions. [2024-10-31 22:18:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:18:39,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2024-10-31 22:18:39,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:39,591 INFO L225 Difference]: With dead ends: 1224 [2024-10-31 22:18:39,591 INFO L226 Difference]: Without dead ends: 695 [2024-10-31 22:18:39,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:18:39,604 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 1090 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:39,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1181 Invalid, 2724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [248 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-10-31 22:18:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-10-31 22:18:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2024-10-31 22:18:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.7023809523809523) internal successors, (715), 441 states have internal predecessors, (715), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-10-31 22:18:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 892 transitions. [2024-10-31 22:18:39,866 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 892 transitions. Word has length 56 [2024-10-31 22:18:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:39,866 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 892 transitions. [2024-10-31 22:18:39,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 22:18:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 892 transitions. [2024-10-31 22:18:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-31 22:18:39,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:39,877 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:39,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:18:39,877 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:39,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1890375133, now seen corresponding path program 1 times [2024-10-31 22:18:39,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:39,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081195367] [2024-10-31 22:18:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:39,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:18:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:18:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:18:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:40,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081195367] [2024-10-31 22:18:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081195367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:40,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:40,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:18:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383945973] [2024-10-31 22:18:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:40,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:18:40,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:18:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:40,659 INFO L87 Difference]: Start difference. First operand 533 states and 892 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 22:18:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:47,560 INFO L93 Difference]: Finished difference Result 1210 states and 2051 transitions. [2024-10-31 22:18:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:18:47,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2024-10-31 22:18:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:47,585 INFO L225 Difference]: With dead ends: 1210 [2024-10-31 22:18:47,585 INFO L226 Difference]: Without dead ends: 695 [2024-10-31 22:18:47,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:18:47,591 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 1090 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:47,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1138 Invalid, 2726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-10-31 22:18:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-10-31 22:18:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2024-10-31 22:18:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.7) internal successors, (714), 441 states have internal predecessors, (714), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-10-31 22:18:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 891 transitions. [2024-10-31 22:18:47,822 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 891 transitions. Word has length 59 [2024-10-31 22:18:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:47,823 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 891 transitions. [2024-10-31 22:18:47,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 22:18:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 891 transitions. [2024-10-31 22:18:47,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-31 22:18:47,827 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:47,827 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:47,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:18:47,827 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:47,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:47,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2145122521, now seen corresponding path program 1 times [2024-10-31 22:18:47,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:47,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727135161] [2024-10-31 22:18:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:47,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:18:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 22:18:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-31 22:18:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:48,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:48,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727135161] [2024-10-31 22:18:48,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727135161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:48,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:48,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:18:48,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386843793] [2024-10-31 22:18:48,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:48,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:18:48,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:48,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:18:48,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:48,656 INFO L87 Difference]: Start difference. First operand 533 states and 891 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 22:18:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:55,226 INFO L93 Difference]: Finished difference Result 1210 states and 2050 transitions. [2024-10-31 22:18:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:18:55,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2024-10-31 22:18:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:55,237 INFO L225 Difference]: With dead ends: 1210 [2024-10-31 22:18:55,237 INFO L226 Difference]: Without dead ends: 695 [2024-10-31 22:18:55,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:18:55,243 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 659 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:55,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1137 Invalid, 2737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-10-31 22:18:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-10-31 22:18:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 533. [2024-10-31 22:18:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 420 states have (on average 1.6976190476190476) internal successors, (713), 441 states have internal predecessors, (713), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2024-10-31 22:18:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 890 transitions. [2024-10-31 22:18:55,387 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 890 transitions. Word has length 60 [2024-10-31 22:18:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:55,388 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 890 transitions. [2024-10-31 22:18:55,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 22:18:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 890 transitions. [2024-10-31 22:18:55,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-31 22:18:55,390 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:55,390 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:55,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:18:55,390 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:55,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1890778849, now seen corresponding path program 1 times [2024-10-31 22:18:55,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:55,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633473669] [2024-10-31 22:18:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:55,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:18:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:18:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:18:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:56,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633473669] [2024-10-31 22:18:56,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633473669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:56,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:18:56,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081328739] [2024-10-31 22:18:56,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:56,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:18:56,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:18:56,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:56,306 INFO L87 Difference]: Start difference. First operand 533 states and 890 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)