./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:48,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:48,858 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:06:48,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:48,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:48,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:48,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:48,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:48,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:06:48,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:06:48,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:48,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:48,927 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:48,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:48,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:06:48,930 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:06:48,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:48,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:06:48,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:48,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:06:48,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:06:48,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:06:48,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:06:48,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:06:48,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:48,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:48,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:48,937 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:06:48,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:48,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:48,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:06:48,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:06:48,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:06:48,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:06:48,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:06:48,941 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:06:48,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:06:48,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:06:48,942 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:06:48,942 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_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 [2023-11-06 23:06:49,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:49,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:49,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:49,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:49,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:49,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2023-11-06 23:06:52,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:52,928 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:52,929 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2023-11-06 23:06:52,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/data/d4ac2d568/806edfd4ac474d16a3438ef8627d6bda/FLAG025ab213a [2023-11-06 23:06:53,002 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/data/d4ac2d568/806edfd4ac474d16a3438ef8627d6bda [2023-11-06 23:06:53,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:53,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:53,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:53,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:53,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:53,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:53" (1/1) ... [2023-11-06 23:06:53,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d6350b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:53, skipping insertion in model container [2023-11-06 23:06:53,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:53" (1/1) ... [2023-11-06 23:06:53,140 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:53,715 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c[62576,62589] [2023-11-06 23:06:53,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:53,781 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:06:53,796 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2023-11-06 23:06:53,797 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [151] [2023-11-06 23:06:53,798 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [818] [2023-11-06 23:06:53,798 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2396] [2023-11-06 23:06:53,799 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2762] [2023-11-06 23:06:53,799 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2780] [2023-11-06 23:06:53,800 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2818] [2023-11-06 23:06:53,800 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2827] [2023-11-06 23:06:53,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3175] [2023-11-06 23:06:53,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3293] [2023-11-06 23:06:53,963 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c[62576,62589] [2023-11-06 23:06:53,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:54,021 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:06:54,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54 WrapperNode [2023-11-06 23:06:54,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:54,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:54,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:06:54,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:06:54,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,154 INFO L138 Inliner]: procedures = 94, calls = 352, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 1111 [2023-11-06 23:06:54,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:54,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:06:54,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:06:54,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:06:54,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:06:54,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:06:54,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:06:54,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:06:54,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (1/1) ... [2023-11-06 23:06:54,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:54,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:54,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:06:54,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:06:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:06:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-06 23:06:54,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-06 23:06:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-06 23:06:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-06 23:06:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-06 23:06:54,407 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-06 23:06:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-06 23:06:54,407 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-06 23:06:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-06 23:06:54,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-06 23:06:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-06 23:06:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-06 23:06:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-06 23:06:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-06 23:06:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-06 23:06:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-06 23:06:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-06 23:06:54,410 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-06 23:06:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-06 23:06:54,411 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-06 23:06:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-06 23:06:54,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-06 23:06:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-06 23:06:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-06 23:06:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-06 23:06:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-06 23:06:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-06 23:06:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-06 23:06:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-06 23:06:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-06 23:06:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-06 23:06:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-06 23:06:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-06 23:06:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-06 23:06:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-06 23:06:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-06 23:06:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-06 23:06:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-06 23:06:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-06 23:06:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-06 23:06:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-06 23:06:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-06 23:06:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-06 23:06:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-06 23:06:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:06:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-06 23:06:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-06 23:06:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-06 23:06:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-06 23:06:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-06 23:06:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-06 23:06:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-06 23:06:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-06 23:06:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:06:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:06:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-06 23:06:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-06 23:06:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-06 23:06:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-06 23:06:54,651 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:06:54,654 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:06:56,029 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:06:56,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:06:56,045 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:06:56,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:56 BoogieIcfgContainer [2023-11-06 23:06:56,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:06:56,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:06:56,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:06:56,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:06:56,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:53" (1/3) ... [2023-11-06 23:06:56,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebcae58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:56, skipping insertion in model container [2023-11-06 23:06:56,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:54" (2/3) ... [2023-11-06 23:06:56,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebcae58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:56, skipping insertion in model container [2023-11-06 23:06:56,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:56" (3/3) ... [2023-11-06 23:06:56,057 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product20.cil.c [2023-11-06 23:06:56,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:06:56,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:06:56,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:06:56,161 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74457f4f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:06:56,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:06:56,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 457 states have (on average 1.6652078774617067) internal successors, (761), 477 states have internal predecessors, (761), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-06 23:06:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 23:06:56,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:56,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:56,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:56,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:56,195 INFO L85 PathProgramCache]: Analyzing trace with hash -251107073, now seen corresponding path program 1 times [2023-11-06 23:06:56,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:56,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995704204] [2023-11-06 23:06:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:56,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:06:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:06:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:06:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:06:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:06:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 23:06:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:06:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 23:06:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:06:57,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995704204] [2023-11-06 23:06:57,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995704204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:57,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:57,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:06:57,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376179321] [2023-11-06 23:06:57,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:57,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:06:57,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:58,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:06:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:06:58,044 INFO L87 Difference]: Start difference. First operand has 597 states, 457 states have (on average 1.6652078774617067) internal successors, (761), 477 states have internal predecessors, (761), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:07:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:08,431 INFO L93 Difference]: Finished difference Result 1466 states and 2507 transitions. [2023-11-06 23:07:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:07:08,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2023-11-06 23:07:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:08,481 INFO L225 Difference]: With dead ends: 1466 [2023-11-06 23:07:08,481 INFO L226 Difference]: Without dead ends: 873 [2023-11-06 23:07:08,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:07:08,506 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1519 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 5374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:08,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 2635 Invalid, 5374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [420 Valid, 4954 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-06 23:07:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-11-06 23:07:08,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 600. [2023-11-06 23:07:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 460 states have (on average 1.6565217391304348) internal successors, (762), 480 states have internal predecessors, (762), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2023-11-06 23:07:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 983 transitions. [2023-11-06 23:07:08,870 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 983 transitions. Word has length 67 [2023-11-06 23:07:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:08,871 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 983 transitions. [2023-11-06 23:07:08,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:07:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 983 transitions. [2023-11-06 23:07:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:07:08,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:08,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:08,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:08,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:08,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1286428907, now seen corresponding path program 1 times [2023-11-06 23:07:08,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:08,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712452371] [2023-11-06 23:07:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:08,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:07:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 23:07:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 23:07:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 23:07:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:07:09,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:09,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712452371] [2023-11-06 23:07:09,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712452371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:09,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:09,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:09,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533150815] [2023-11-06 23:07:09,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:09,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:09,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:09,854 INFO L87 Difference]: Start difference. First operand 600 states and 983 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:07:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:18,834 INFO L93 Difference]: Finished difference Result 1454 states and 2463 transitions. [2023-11-06 23:07:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:07:18,837 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-11-06 23:07:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:18,851 INFO L225 Difference]: With dead ends: 1454 [2023-11-06 23:07:18,851 INFO L226 Difference]: Without dead ends: 870 [2023-11-06 23:07:18,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:07:18,860 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1469 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 2615 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 2615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:18,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 1394 Invalid, 3023 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [408 Valid, 2615 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-06 23:07:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-11-06 23:07:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 600. [2023-11-06 23:07:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 460 states have (on average 1.6543478260869566) internal successors, (761), 480 states have internal predecessors, (761), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2023-11-06 23:07:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 982 transitions. [2023-11-06 23:07:19,092 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 982 transitions. Word has length 68 [2023-11-06 23:07:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:19,092 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 982 transitions. [2023-11-06 23:07:19,093 INFO L496 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:07:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 982 transitions. [2023-11-06 23:07:19,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:07:19,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:19,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:19,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:19,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:19,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash 313157825, now seen corresponding path program 1 times [2023-11-06 23:07:19,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:19,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282738774] [2023-11-06 23:07:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:19,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:07:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:07:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 23:07:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 23:07:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 23:07:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:07:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:19,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282738774] [2023-11-06 23:07:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282738774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:19,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:19,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327766113] [2023-11-06 23:07:19,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:19,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:19,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:19,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:19,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:19,956 INFO L87 Difference]: Start difference. First operand 600 states and 982 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:07:28,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:28,486 INFO L93 Difference]: Finished difference Result 1451 states and 2451 transitions. [2023-11-06 23:07:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:07:28,487 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-11-06 23:07:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:28,498 INFO L225 Difference]: With dead ends: 1451 [2023-11-06 23:07:28,499 INFO L226 Difference]: Without dead ends: 836 [2023-11-06 23:07:28,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:28,507 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 822 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:28,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1504 Invalid, 2946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-06 23:07:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-11-06 23:07:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 576. [2023-11-06 23:07:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 439 states have (on average 1.644646924829157) internal successors, (722), 457 states have internal predecessors, (722), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:07:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 939 transitions. [2023-11-06 23:07:28,672 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 939 transitions. Word has length 68 [2023-11-06 23:07:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:28,673 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 939 transitions. [2023-11-06 23:07:28,674 INFO L496 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:07:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 939 transitions. [2023-11-06 23:07:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 23:07:28,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:28,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:28,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:07:28,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:28,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1818055627, now seen corresponding path program 1 times [2023-11-06 23:07:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:28,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217972588] [2023-11-06 23:07:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:07:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:07:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 23:07:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 23:07:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:07:29,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:29,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217972588] [2023-11-06 23:07:29,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217972588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:29,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:29,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:07:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040210509] [2023-11-06 23:07:29,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:29,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:07:29,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:07:29,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:07:29,645 INFO L87 Difference]: Start difference. First operand 576 states and 939 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:07:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:40,082 INFO L93 Difference]: Finished difference Result 1414 states and 2382 transitions. [2023-11-06 23:07:40,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:07:40,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2023-11-06 23:07:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:40,094 INFO L225 Difference]: With dead ends: 1414 [2023-11-06 23:07:40,094 INFO L226 Difference]: Without dead ends: 830 [2023-11-06 23:07:40,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:07:40,101 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1448 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 4785 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 4785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:40,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 2548 Invalid, 5198 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [413 Valid, 4785 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-06 23:07:40,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-06 23:07:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 570. [2023-11-06 23:07:40,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 433 states have (on average 1.6374133949191685) internal successors, (709), 451 states have internal predecessors, (709), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:07:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 926 transitions. [2023-11-06 23:07:40,309 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 926 transitions. Word has length 69 [2023-11-06 23:07:40,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:40,310 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 926 transitions. [2023-11-06 23:07:40,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:07:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 926 transitions. [2023-11-06 23:07:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 23:07:40,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:40,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:40,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:07:40,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:40,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:40,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2093052179, now seen corresponding path program 1 times [2023-11-06 23:07:40,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:40,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676623384] [2023-11-06 23:07:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:40,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:07:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:07:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:07:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 23:07:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:07:41,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676623384] [2023-11-06 23:07:41,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676623384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:41,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:41,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:41,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836583435] [2023-11-06 23:07:41,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:41,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:41,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:41,240 INFO L87 Difference]: Start difference. First operand 570 states and 926 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:07:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:49,258 INFO L93 Difference]: Finished difference Result 1384 states and 2331 transitions. [2023-11-06 23:07:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:07:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2023-11-06 23:07:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:49,269 INFO L225 Difference]: With dead ends: 1384 [2023-11-06 23:07:49,270 INFO L226 Difference]: Without dead ends: 830 [2023-11-06 23:07:49,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:07:49,276 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1393 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:49,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1351 Invalid, 2859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [410 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-06 23:07:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-06 23:07:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 570. [2023-11-06 23:07:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 433 states have (on average 1.6351039260969977) internal successors, (708), 451 states have internal predecessors, (708), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:07:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 925 transitions. [2023-11-06 23:07:49,484 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 925 transitions. Word has length 70 [2023-11-06 23:07:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:49,484 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 925 transitions. [2023-11-06 23:07:49,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:07:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 925 transitions. [2023-11-06 23:07:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-06 23:07:49,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:49,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:49,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:07:49,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:49,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:49,489 INFO L85 PathProgramCache]: Analyzing trace with hash 735122664, now seen corresponding path program 1 times [2023-11-06 23:07:49,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:49,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817980721] [2023-11-06 23:07:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:07:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:07:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:07:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 23:07:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:07:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 23:07:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:07:50,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:50,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817980721] [2023-11-06 23:07:50,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817980721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:50,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:50,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:07:50,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847796589] [2023-11-06 23:07:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:50,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:07:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:07:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:07:50,484 INFO L87 Difference]: Start difference. First operand 570 states and 925 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:01,324 INFO L93 Difference]: Finished difference Result 1402 states and 2351 transitions. [2023-11-06 23:08:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:08:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2023-11-06 23:08:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:01,339 INFO L225 Difference]: With dead ends: 1402 [2023-11-06 23:08:01,340 INFO L226 Difference]: Without dead ends: 824 [2023-11-06 23:08:01,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:08:01,348 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 856 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 4918 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 4918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:01,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 2865 Invalid, 5105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [187 Valid, 4918 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-06 23:08:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-11-06 23:08:01,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 564. [2023-11-06 23:08:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 427 states have (on average 1.6276346604215457) internal successors, (695), 445 states have internal predecessors, (695), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:08:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 912 transitions. [2023-11-06 23:08:01,561 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 912 transitions. Word has length 71 [2023-11-06 23:08:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:01,561 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 912 transitions. [2023-11-06 23:08:01,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 912 transitions. [2023-11-06 23:08:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 23:08:01,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:01,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:01,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:08:01,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:01,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -254373036, now seen corresponding path program 1 times [2023-11-06 23:08:01,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:01,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43278118] [2023-11-06 23:08:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:08:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:08:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:08:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:08:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:08:02,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:02,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43278118] [2023-11-06 23:08:02,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43278118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:02,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:02,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:08:02,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284612950] [2023-11-06 23:08:02,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:02,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:08:02,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:02,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:08:02,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:08:02,475 INFO L87 Difference]: Start difference. First operand 564 states and 912 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:08:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:11,012 INFO L93 Difference]: Finished difference Result 1372 states and 2302 transitions. [2023-11-06 23:08:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:08:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-11-06 23:08:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:11,022 INFO L225 Difference]: With dead ends: 1372 [2023-11-06 23:08:11,023 INFO L226 Difference]: Without dead ends: 824 [2023-11-06 23:08:11,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:11,028 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 809 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:11,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1371 Invalid, 2748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [195 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-06 23:08:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-11-06 23:08:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 564. [2023-11-06 23:08:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 427 states have (on average 1.6252927400468384) internal successors, (694), 445 states have internal predecessors, (694), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:08:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 911 transitions. [2023-11-06 23:08:11,248 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 911 transitions. Word has length 72 [2023-11-06 23:08:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:11,248 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 911 transitions. [2023-11-06 23:08:11,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:08:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 911 transitions. [2023-11-06 23:08:11,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-06 23:08:11,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:11,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:08:11,251 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:11,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 660934412, now seen corresponding path program 1 times [2023-11-06 23:08:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:11,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884295930] [2023-11-06 23:08:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:11,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:08:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 23:08:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 23:08:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 23:08:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:08:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884295930] [2023-11-06 23:08:12,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884295930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:12,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:12,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:08:12,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906239032] [2023-11-06 23:08:12,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:12,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:08:12,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:08:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:12,201 INFO L87 Difference]: Start difference. First operand 564 states and 911 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:22,922 INFO L93 Difference]: Finished difference Result 1390 states and 2320 transitions. [2023-11-06 23:08:22,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:08:22,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2023-11-06 23:08:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:22,933 INFO L225 Difference]: With dead ends: 1390 [2023-11-06 23:08:22,933 INFO L226 Difference]: Without dead ends: 818 [2023-11-06 23:08:22,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:08:22,938 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 839 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 4967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:22,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2351 Invalid, 4967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [196 Valid, 4771 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-06 23:08:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-11-06 23:08:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 558. [2023-11-06 23:08:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 421 states have (on average 1.6175771971496438) internal successors, (681), 439 states have internal predecessors, (681), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:08:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 898 transitions. [2023-11-06 23:08:23,208 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 898 transitions. Word has length 73 [2023-11-06 23:08:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:23,208 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 898 transitions. [2023-11-06 23:08:23,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 898 transitions. [2023-11-06 23:08:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-06 23:08:23,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:23,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:23,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:08:23,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:23,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1460751403, now seen corresponding path program 1 times [2023-11-06 23:08:23,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:23,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087903056] [2023-11-06 23:08:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:23,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:23,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:08:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 23:08:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 23:08:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 23:08:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:08:24,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:24,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087903056] [2023-11-06 23:08:24,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087903056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:24,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:24,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:08:24,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824718007] [2023-11-06 23:08:24,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:24,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:08:24,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:08:24,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:08:24,057 INFO L87 Difference]: Start difference. First operand 558 states and 898 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:08:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:32,476 INFO L93 Difference]: Finished difference Result 1360 states and 2273 transitions. [2023-11-06 23:08:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:08:32,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2023-11-06 23:08:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:32,486 INFO L225 Difference]: With dead ends: 1360 [2023-11-06 23:08:32,486 INFO L226 Difference]: Without dead ends: 818 [2023-11-06 23:08:32,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:32,491 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 798 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:32,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1464 Invalid, 2681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-06 23:08:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-11-06 23:08:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 558. [2023-11-06 23:08:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 421 states have (on average 1.6152019002375297) internal successors, (680), 439 states have internal predecessors, (680), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:08:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 897 transitions. [2023-11-06 23:08:32,683 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 897 transitions. Word has length 73 [2023-11-06 23:08:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:32,684 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 897 transitions. [2023-11-06 23:08:32,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:08:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 897 transitions. [2023-11-06 23:08:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 23:08:32,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:32,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:32,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:08:32,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:32,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:32,687 INFO L85 PathProgramCache]: Analyzing trace with hash 126366684, now seen corresponding path program 1 times [2023-11-06 23:08:32,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:32,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4460439] [2023-11-06 23:08:32,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:32,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:08:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 23:08:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 23:08:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 23:08:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:08:33,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:33,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4460439] [2023-11-06 23:08:33,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4460439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:33,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:08:33,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290074206] [2023-11-06 23:08:33,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:33,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:08:33,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:33,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:08:33,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:33,645 INFO L87 Difference]: Start difference. First operand 558 states and 897 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:44,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:44,157 INFO L93 Difference]: Finished difference Result 1372 states and 2282 transitions. [2023-11-06 23:08:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:08:44,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2023-11-06 23:08:44,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:44,167 INFO L225 Difference]: With dead ends: 1372 [2023-11-06 23:08:44,167 INFO L226 Difference]: Without dead ends: 818 [2023-11-06 23:08:44,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:08:44,172 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 805 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 4623 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 4822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 4623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:44,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2305 Invalid, 4822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [199 Valid, 4623 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-11-06 23:08:44,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-11-06 23:08:44,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 558. [2023-11-06 23:08:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 421 states have (on average 1.6128266033254157) internal successors, (679), 439 states have internal predecessors, (679), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:08:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 896 transitions. [2023-11-06 23:08:44,388 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 896 transitions. Word has length 74 [2023-11-06 23:08:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:44,389 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 896 transitions. [2023-11-06 23:08:44,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 896 transitions. [2023-11-06 23:08:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-06 23:08:44,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:44,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:44,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:08:44,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:44,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:44,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1701117613, now seen corresponding path program 1 times [2023-11-06 23:08:44,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:44,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327194294] [2023-11-06 23:08:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:44,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:08:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:08:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:08:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:08:45,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:45,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327194294] [2023-11-06 23:08:45,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327194294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:45,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:45,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:08:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966823850] [2023-11-06 23:08:45,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:45,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:08:45,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:45,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:08:45,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:08:45,248 INFO L87 Difference]: Start difference. First operand 558 states and 896 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:08:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:52,564 INFO L93 Difference]: Finished difference Result 1355 states and 2262 transitions. [2023-11-06 23:08:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:08:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2023-11-06 23:08:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:52,579 INFO L225 Difference]: With dead ends: 1355 [2023-11-06 23:08:52,579 INFO L226 Difference]: Without dead ends: 813 [2023-11-06 23:08:52,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:52,584 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1351 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:52,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 1220 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-06 23:08:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-11-06 23:08:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 558. [2023-11-06 23:08:52,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 421 states have (on average 1.6104513064133017) internal successors, (678), 439 states have internal predecessors, (678), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-06 23:08:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 895 transitions. [2023-11-06 23:08:52,765 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 895 transitions. Word has length 75 [2023-11-06 23:08:52,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:52,766 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 895 transitions. [2023-11-06 23:08:52,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:08:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 895 transitions. [2023-11-06 23:08:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-06 23:08:52,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:52,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:52,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:08:52,768 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:52,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash 144249553, now seen corresponding path program 1 times [2023-11-06 23:08:52,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:52,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115565116] [2023-11-06 23:08:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:52,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:08:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:08:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:08:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:53,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:53,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115565116] [2023-11-06 23:08:53,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115565116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:53,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943490157] [2023-11-06 23:08:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:53,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:53,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:53,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:53,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:08:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:54,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:08:54,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:54,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943490157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:54,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:54,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-11-06 23:08:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61956904] [2023-11-06 23:08:54,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:54,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:54,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:54,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:08:54,136 INFO L87 Difference]: Start difference. First operand 558 states and 895 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:54,470 INFO L93 Difference]: Finished difference Result 1585 states and 2573 transitions. [2023-11-06 23:08:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:54,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2023-11-06 23:08:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:54,478 INFO L225 Difference]: With dead ends: 1585 [2023-11-06 23:08:54,479 INFO L226 Difference]: Without dead ends: 1045 [2023-11-06 23:08:54,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:08:54,482 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 856 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:54,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2305 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:08:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-11-06 23:08:54,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1030. [2023-11-06 23:08:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 784 states have (on average 1.6224489795918366) internal successors, (1272), 819 states have internal predecessors, (1272), 195 states have call successors, (195), 51 states have call predecessors, (195), 50 states have return successors, (197), 187 states have call predecessors, (197), 192 states have call successors, (197) [2023-11-06 23:08:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1664 transitions. [2023-11-06 23:08:54,796 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1664 transitions. Word has length 75 [2023-11-06 23:08:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:54,797 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1664 transitions. [2023-11-06 23:08:54,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1664 transitions. [2023-11-06 23:08:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 23:08:54,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:54,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:54,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:55,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:55,007 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:55,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2122531563, now seen corresponding path program 1 times [2023-11-06 23:08:55,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:55,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818292795] [2023-11-06 23:08:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:55,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:08:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:08:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 23:08:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:55,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818292795] [2023-11-06 23:08:55,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818292795] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088003969] [2023-11-06 23:08:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:55,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:55,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:55,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:08:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:56,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:08:56,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:56,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088003969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:56,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-11-06 23:08:56,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173449253] [2023-11-06 23:08:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:56,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:08:56,299 INFO L87 Difference]: Start difference. First operand 1030 states and 1664 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:56,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:56,780 INFO L93 Difference]: Finished difference Result 2529 states and 4113 transitions. [2023-11-06 23:08:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:56,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-11-06 23:08:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:56,795 INFO L225 Difference]: With dead ends: 2529 [2023-11-06 23:08:56,795 INFO L226 Difference]: Without dead ends: 1517 [2023-11-06 23:08:56,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:08:56,803 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 856 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:56,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2362 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:08:56,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2023-11-06 23:08:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1469. [2023-11-06 23:08:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1120 states have (on average 1.6348214285714286) internal successors, (1831), 1172 states have internal predecessors, (1831), 277 states have call successors, (277), 71 states have call predecessors, (277), 71 states have return successors, (284), 267 states have call predecessors, (284), 274 states have call successors, (284) [2023-11-06 23:08:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2392 transitions. [2023-11-06 23:08:57,288 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2392 transitions. Word has length 76 [2023-11-06 23:08:57,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:57,289 INFO L495 AbstractCegarLoop]: Abstraction has 1469 states and 2392 transitions. [2023-11-06 23:08:57,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:08:57,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2392 transitions. [2023-11-06 23:08:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 23:08:57,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:57,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:57,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:57,500 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:08:57,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1892964470, now seen corresponding path program 1 times [2023-11-06 23:08:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:57,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631435682] [2023-11-06 23:08:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:08:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:08:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:08:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:08:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:08:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 23:08:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-06 23:08:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:08:58,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631435682] [2023-11-06 23:08:58,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631435682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:58,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:58,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:08:58,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335214773] [2023-11-06 23:08:58,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:08:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:58,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:08:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:08:58,381 INFO L87 Difference]: Start difference. First operand 1469 states and 2392 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-06 23:09:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:15,359 INFO L93 Difference]: Finished difference Result 5693 states and 9928 transitions. [2023-11-06 23:09:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:09:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-06 23:09:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:15,408 INFO L225 Difference]: With dead ends: 5693 [2023-11-06 23:09:15,408 INFO L226 Difference]: Without dead ends: 4242 [2023-11-06 23:09:15,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:09:15,436 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 2324 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 5428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:15,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 2564 Invalid, 5428 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [678 Valid, 4750 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-11-06 23:09:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4242 states. [2023-11-06 23:09:16,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4242 to 3499. [2023-11-06 23:09:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 2517 states have (on average 1.6042908224076282) internal successors, (4038), 2713 states have internal predecessors, (4038), 801 states have call successors, (801), 136 states have call predecessors, (801), 180 states have return successors, (1252), 799 states have call predecessors, (1252), 797 states have call successors, (1252) [2023-11-06 23:09:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 6091 transitions. [2023-11-06 23:09:16,942 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 6091 transitions. Word has length 78 [2023-11-06 23:09:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:16,942 INFO L495 AbstractCegarLoop]: Abstraction has 3499 states and 6091 transitions. [2023-11-06 23:09:16,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-06 23:09:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 6091 transitions. [2023-11-06 23:09:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-06 23:09:16,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:16,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:16,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:09:16,945 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:16,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:16,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1335128698, now seen corresponding path program 1 times [2023-11-06 23:09:16,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:16,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99146662] [2023-11-06 23:09:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:16,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:09:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:09:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:09:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:09:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:09:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 23:09:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 23:09:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:09:17,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:17,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99146662] [2023-11-06 23:09:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99146662] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19483466] [2023-11-06 23:09:17,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:17,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:09:17,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:17,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:09:17,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:09:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:18,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:09:18,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:18,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:18,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19483466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:18,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:09:18,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-11-06 23:09:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933890194] [2023-11-06 23:09:18,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:18,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:09:18,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:09:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:09:18,577 INFO L87 Difference]: Start difference. First operand 3499 states and 6091 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-06 23:09:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:22,148 INFO L93 Difference]: Finished difference Result 9442 states and 16631 transitions. [2023-11-06 23:09:22,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:09:22,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2023-11-06 23:09:22,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:22,217 INFO L225 Difference]: With dead ends: 9442 [2023-11-06 23:09:22,218 INFO L226 Difference]: Without dead ends: 5961 [2023-11-06 23:09:22,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:09:22,251 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 757 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:22,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 4187 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 23:09:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2023-11-06 23:09:24,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5918. [2023-11-06 23:09:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5918 states, 4256 states have (on average 1.563204887218045) internal successors, (6653), 4582 states have internal predecessors, (6653), 1340 states have call successors, (1340), 244 states have call predecessors, (1340), 321 states have return successors, (2195), 1341 states have call predecessors, (2195), 1334 states have call successors, (2195) [2023-11-06 23:09:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5918 states to 5918 states and 10188 transitions. [2023-11-06 23:09:24,623 INFO L78 Accepts]: Start accepts. Automaton has 5918 states and 10188 transitions. Word has length 79 [2023-11-06 23:09:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:24,624 INFO L495 AbstractCegarLoop]: Abstraction has 5918 states and 10188 transitions. [2023-11-06 23:09:24,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-06 23:09:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5918 states and 10188 transitions. [2023-11-06 23:09:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-06 23:09:24,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:24,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:24,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:24,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98c751a4-4fe8-4a34-b124-4dc370feae31/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 23:09:24,834 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:24,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1845280899, now seen corresponding path program 1 times [2023-11-06 23:09:24,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:24,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941499180] [2023-11-06 23:09:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:24,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:09:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:09:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:09:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:09:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:09:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 23:09:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 23:09:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 23:09:25,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941499180] [2023-11-06 23:09:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941499180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:25,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:25,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:09:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491292754] [2023-11-06 23:09:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:25,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:09:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:09:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:25,457 INFO L87 Difference]: Start difference. First operand 5918 states and 10188 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:09:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:35,999 INFO L93 Difference]: Finished difference Result 13019 states and 22927 transitions. [2023-11-06 23:09:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:09:36,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2023-11-06 23:09:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:36,064 INFO L225 Difference]: With dead ends: 13019 [2023-11-06 23:09:36,064 INFO L226 Difference]: Without dead ends: 7119 [2023-11-06 23:09:36,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:36,100 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 775 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:36,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 1493 Invalid, 2703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [184 Valid, 2519 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-06 23:09:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7119 states. [2023-11-06 23:09:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7119 to 6418. [2023-11-06 23:09:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6418 states, 4502 states have (on average 1.551532652154598) internal successors, (6985), 4868 states have internal predecessors, (6985), 1576 states have call successors, (1576), 248 states have call predecessors, (1576), 339 states have return successors, (2682), 1591 states have call predecessors, (2682), 1570 states have call successors, (2682) [2023-11-06 23:09:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6418 states to 6418 states and 11243 transitions. [2023-11-06 23:09:39,177 INFO L78 Accepts]: Start accepts. Automaton has 6418 states and 11243 transitions. Word has length 79 [2023-11-06 23:09:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:39,178 INFO L495 AbstractCegarLoop]: Abstraction has 6418 states and 11243 transitions. [2023-11-06 23:09:39,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:09:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6418 states and 11243 transitions. [2023-11-06 23:09:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 23:09:39,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:39,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:09:39,179 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:09:39,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1078910469, now seen corresponding path program 1 times [2023-11-06 23:09:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:09:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136468651] [2023-11-06 23:09:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:09:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:09:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:09:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:09:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:09:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:09:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:09:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 23:09:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 23:09:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 23:09:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:09:39,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:09:39,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136468651] [2023-11-06 23:09:39,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136468651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:39,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:39,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:09:39,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725669294] [2023-11-06 23:09:39,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:39,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:09:39,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:09:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:09:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:39,940 INFO L87 Difference]: Start difference. First operand 6418 states and 11243 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 23:10:00,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:00,772 INFO L93 Difference]: Finished difference Result 20636 states and 37617 transitions. [2023-11-06 23:10:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:10:00,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-11-06 23:10:00,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:00,903 INFO L225 Difference]: With dead ends: 20636 [2023-11-06 23:10:00,903 INFO L226 Difference]: Without dead ends: 14236 [2023-11-06 23:10:00,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:10:00,955 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2342 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 4481 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 5172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 4481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:00,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2479 Valid, 2371 Invalid, 5172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [691 Valid, 4481 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-11-06 23:10:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14236 states. [2023-11-06 23:10:06,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14236 to 12894. [2023-11-06 23:10:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12894 states, 9002 states have (on average 1.547989335703177) internal successors, (13935), 9741 states have internal predecessors, (13935), 3212 states have call successors, (3212), 490 states have call predecessors, (3212), 679 states have return successors, (6210), 3257 states have call predecessors, (6210), 3202 states have call successors, (6210) [2023-11-06 23:10:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12894 states to 12894 states and 23357 transitions. [2023-11-06 23:10:06,493 INFO L78 Accepts]: Start accepts. Automaton has 12894 states and 23357 transitions. Word has length 87 [2023-11-06 23:10:06,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:06,494 INFO L495 AbstractCegarLoop]: Abstraction has 12894 states and 23357 transitions. [2023-11-06 23:10:06,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 23:10:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 12894 states and 23357 transitions. [2023-11-06 23:10:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-06 23:10:06,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:06,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:10:06,497 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:06,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash -296824608, now seen corresponding path program 1 times [2023-11-06 23:10:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:06,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081026748] [2023-11-06 23:10:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:06,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:10:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:10:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 23:10:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:10:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 23:10:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:10:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 23:10:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 23:10:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 23:10:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-06 23:10:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:10:07,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:07,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081026748] [2023-11-06 23:10:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081026748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:07,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:07,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:10:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265112505] [2023-11-06 23:10:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:07,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:10:07,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:07,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:10:07,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:07,166 INFO L87 Difference]: Start difference. First operand 12894 states and 23357 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 23:10:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:19,231 INFO L93 Difference]: Finished difference Result 26987 states and 50104 transitions. [2023-11-06 23:10:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:10:19,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2023-11-06 23:10:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:19,366 INFO L225 Difference]: With dead ends: 26987 [2023-11-06 23:10:19,366 INFO L226 Difference]: Without dead ends: 14111 [2023-11-06 23:10:19,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:10:19,466 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1323 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:19,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 1466 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-06 23:10:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14111 states.