./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/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_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/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_71d7655a-04b0-42ed-be6d-acc742c8595e/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 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:59,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:59,719 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:03:59,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:59,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:59,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:59,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:59,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:59,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:59,765 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:59,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:59,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:59,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:59,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:59,768 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:59,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:59,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:03:59,769 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:59,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:59,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:59,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:59,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:03:59,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:59,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:03:59,772 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:59,772 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:59,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:03:59,773 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:59,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:59,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:59,774 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:59,774 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:59,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:59,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:59,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:59,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:03:59,776 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:59,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:59,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:59,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:59,777 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:59,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:59,777 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_71d7655a-04b0-42ed-be6d-acc742c8595e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a [2024-10-31 22:04:00,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:04:00,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:04:00,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:04:00,115 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:04:00,115 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:04:00,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c Unable to find full path for "g++" [2024-10-31 22:04:02,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:04:02,568 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:04:02,568 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2024-10-31 22:04:02,600 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/data/7dd88b6f2/398a5dbab8f742fc8f20324d3c56c4ef/FLAG242f36a75 [2024-10-31 22:04:02,618 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/data/7dd88b6f2/398a5dbab8f742fc8f20324d3c56c4ef [2024-10-31 22:04:02,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:04:02,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:04:02,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:02,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:04:02,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:04:02,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:02" (1/1) ... [2024-10-31 22:04:02,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11df15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:02, skipping insertion in model container [2024-10-31 22:04:02,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:02" (1/1) ... [2024-10-31 22:04:02,722 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:04:02,961 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_71d7655a-04b0-42ed-be6d-acc742c8595e/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c[1545,1558] [2024-10-31 22:04:03,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:03,392 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:04:03,404 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-10-31 22:04:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [57] [2024-10-31 22:04:03,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [421] [2024-10-31 22:04:03,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1088] [2024-10-31 22:04:03,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1454] [2024-10-31 22:04:03,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1466] [2024-10-31 22:04:03,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1586] [2024-10-31 22:04:03,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1621] [2024-10-31 22:04:03,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3188] [2024-10-31 22:04:03,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3279] [2024-10-31 22:04:03,437 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_71d7655a-04b0-42ed-be6d-acc742c8595e/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c[1545,1558] [2024-10-31 22:04:03,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:03,608 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:04:03,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03 WrapperNode [2024-10-31 22:04:03,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:03,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:03,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:04:03,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:04:03,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,700 INFO L138 Inliner]: procedures = 94, calls = 345, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 875 [2024-10-31 22:04:03,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:03,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:04:03,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:04:03,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:04:03,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,728 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,775 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 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 22:04:03,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:04:03,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:04:03,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:04:03,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:04:03,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (1/1) ... [2024-10-31 22:04:03,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:03,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:03,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:04:03,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71d7655a-04b0-42ed-be6d-acc742c8595e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:04:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:04:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-31 22:04:03,955 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-31 22:04:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-10-31 22:04:03,956 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-10-31 22:04:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-31 22:04:03,956 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-31 22:04:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-31 22:04:03,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-31 22:04:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-31 22:04:03,957 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-31 22:04:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-31 22:04:03,958 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-31 22:04:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-31 22:04:03,958 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-31 22:04:03,958 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-10-31 22:04:03,959 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-10-31 22:04:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-31 22:04:03,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-31 22:04:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-31 22:04:03,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-31 22:04:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-31 22:04:03,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-31 22:04:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-31 22:04:03,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-31 22:04:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-10-31 22:04:03,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-10-31 22:04:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-31 22:04:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-31 22:04:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-31 22:04:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-31 22:04:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-31 22:04:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-31 22:04:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-31 22:04:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-31 22:04:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-31 22:04:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-31 22:04:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:04:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:04:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:04:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:04:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 22:04:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 22:04:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 22:04:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 22:04:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 22:04:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-31 22:04:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-31 22:04:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-31 22:04:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-31 22:04:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-31 22:04:03,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-31 22:04:03,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-31 22:04:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-31 22:04:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-31 22:04:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-31 22:04:03,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-31 22:04:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-10-31 22:04:03,968 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-10-31 22:04:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-31 22:04:03,968 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-31 22:04:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-31 22:04:03,968 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-31 22:04:03,968 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-31 22:04:03,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-31 22:04:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-10-31 22:04:03,969 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-10-31 22:04:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-10-31 22:04:03,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-10-31 22:04:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:04:03,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:04:03,969 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-31 22:04:03,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-31 22:04:04,205 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:04:04,210 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:04:05,889 INFO L? ?]: Removed 450 outVars from TransFormulas that were not future-live. [2024-10-31 22:04:05,889 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:04:05,929 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:04:05,933 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:04:05,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:05 BoogieIcfgContainer [2024-10-31 22:04:05,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:04:05,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:04:05,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:04:05,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:04:05,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:04:02" (1/3) ... [2024-10-31 22:04:05,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68eed0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:05, skipping insertion in model container [2024-10-31 22:04:05,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:03" (2/3) ... [2024-10-31 22:04:05,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68eed0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:05, skipping insertion in model container [2024-10-31 22:04:05,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:05" (3/3) ... [2024-10-31 22:04:05,948 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2024-10-31 22:04:05,970 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:04:05,970 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:04:06,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:04:06,087 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;@4979cc1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:04:06,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:04:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2024-10-31 22:04:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-31 22:04:06,114 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:06,115 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 22:04:06,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:06,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:06,122 INFO L85 PathProgramCache]: Analyzing trace with hash -992084887, now seen corresponding path program 1 times [2024-10-31 22:04:06,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:06,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951524219] [2024-10-31 22:04:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:06,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:06,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:04:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:06,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:07,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 22:04:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:07,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:04:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:07,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:07,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:07,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 22:04:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:07,724 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 22:04:07,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951524219] [2024-10-31 22:04:07,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951524219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:07,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:07,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:04:07,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104372531] [2024-10-31 22:04:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:07,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:07,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:07,774 INFO L87 Difference]: Start difference. First operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:04:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:15,647 INFO L93 Difference]: Finished difference Result 1287 states and 2173 transitions. [2024-10-31 22:04:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:15,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-10-31 22:04:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:15,674 INFO L225 Difference]: With dead ends: 1287 [2024-10-31 22:04:15,674 INFO L226 Difference]: Without dead ends: 727 [2024-10-31 22:04:15,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:04:15,688 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 1156 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:15,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1161 Invalid, 2877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [273 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-10-31 22:04:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-10-31 22:04:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2024-10-31 22:04:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 462 states have internal predecessors, (744), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-10-31 22:04:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 935 transitions. [2024-10-31 22:04:15,933 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 935 transitions. Word has length 60 [2024-10-31 22:04:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:15,933 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 935 transitions. [2024-10-31 22:04:15,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:04:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 935 transitions. [2024-10-31 22:04:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-31 22:04:15,945 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:15,945 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, 1, 1] [2024-10-31 22:04:15,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:04:15,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:15,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1651182718, now seen corresponding path program 1 times [2024-10-31 22:04:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:15,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802576123] [2024-10-31 22:04:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:15,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:04:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:04:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:04:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 22:04:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,909 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 22:04:16,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802576123] [2024-10-31 22:04:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802576123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:16,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:16,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:04:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622160923] [2024-10-31 22:04:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:16,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:16,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:16,916 INFO L87 Difference]: Start difference. First operand 564 states and 935 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:04:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:23,989 INFO L93 Difference]: Finished difference Result 1273 states and 2139 transitions. [2024-10-31 22:04:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:23,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-10-31 22:04:23,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:24,000 INFO L225 Difference]: With dead ends: 1273 [2024-10-31 22:04:24,001 INFO L226 Difference]: Without dead ends: 727 [2024-10-31 22:04:24,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 22:04:24,006 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 692 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:24,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1156 Invalid, 2874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-10-31 22:04:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-10-31 22:04:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2024-10-31 22:04:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-10-31 22:04:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 934 transitions. [2024-10-31 22:04:24,157 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 934 transitions. Word has length 63 [2024-10-31 22:04:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:24,158 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 934 transitions. [2024-10-31 22:04:24,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:04:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 934 transitions. [2024-10-31 22:04:24,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-31 22:04:24,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:24,160 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, 1, 1, 1] [2024-10-31 22:04:24,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:04:24,161 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:24,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:24,162 INFO L85 PathProgramCache]: Analyzing trace with hash 722898553, now seen corresponding path program 1 times [2024-10-31 22:04:24,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:24,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720839221] [2024-10-31 22:04:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:24,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:04:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 22:04:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-31 22:04:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 22:04:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,020 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 22:04:25,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:25,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720839221] [2024-10-31 22:04:25,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720839221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:25,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:25,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:04:25,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703006478] [2024-10-31 22:04:25,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:25,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:25,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:25,025 INFO L87 Difference]: Start difference. First operand 564 states and 934 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:04:31,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:31,444 INFO L93 Difference]: Finished difference Result 1273 states and 2138 transitions. [2024-10-31 22:04:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:31,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-10-31 22:04:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:31,452 INFO L225 Difference]: With dead ends: 1273 [2024-10-31 22:04:31,452 INFO L226 Difference]: Without dead ends: 727 [2024-10-31 22:04:31,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 22:04:31,456 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 1151 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:31,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1133 Invalid, 2859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [276 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-10-31 22:04:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-10-31 22:04:31,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2024-10-31 22:04:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 462 states have internal predecessors, (742), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2024-10-31 22:04:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 933 transitions. [2024-10-31 22:04:31,578 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 933 transitions. Word has length 64 [2024-10-31 22:04:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:31,579 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 933 transitions. [2024-10-31 22:04:31,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:04:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 933 transitions. [2024-10-31 22:04:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:04:31,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:31,585 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, 1, 1, 1, 1] [2024-10-31 22:04:31,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:04:31,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:31,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:31,586 INFO L85 PathProgramCache]: Analyzing trace with hash 342813406, now seen corresponding path program 1 times [2024-10-31 22:04:31,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:31,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337895124] [2024-10-31 22:04:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:31,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:31,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:04:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:31,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:31,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:04:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:04:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 22:04:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,348 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 22:04:32,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:32,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337895124] [2024-10-31 22:04:32,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337895124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:32,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:04:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502493137] [2024-10-31 22:04:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:32,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:32,352 INFO L87 Difference]: Start difference. First operand 564 states and 933 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)